Microsoft .NET Framework and Microsoft Visual Studio User Education Teams
Microsoft Corporation
January 2004
Applies to:
Microsoft® .NET Framework version 1.0 or 1.1
Microsoft Visual Studio® .NET
Microsoft Win32® functions
Summary: This article identifies the Microsoft .NET Framework version 1.0 or 1.1 APIs that provide similar functionality to Microsoft Win32 functions. One or more relevant .NET Framework APIs are shown for each Win32 function listed. The intended audience for this article is experienced Win32 developers who are creating applications or libraries based on the Microsoft .NET Framework, but anyone looking for a managed counterpart for a Win32 function could find this document useful. (85 printed pages)
In this article, the Microsoft® Win32® functions are organized by category. Each Win32 function that is listed belongs to only one category, and each category is presented in its own table. An alphabetical list of the Win32 categories is provided, as well as a hierarchical list. To locate a Win32 function, select the appropriate category from one of the category lists or search the article for the name of the function. If you do not find the Win32 function that you are seeking, it means that no equivalent .NET Framework API exists in the .NET Framework version 1.0 or 1.1 or that the Win32 function and the relevant .NET Framework API were inadvertently omitted from the list.
If you believe that a Win32 function and the relevant .NET Framework API have been omitted from this article, please let us know by using the feedback link. For more information on the APIs listed in this article, see the Platform SDK documentation or the .NET Framework SDK documentation in the MSDN® library.
Alphabetical Win32 Category List
A-C
D-I
J-N
O-R
S-T
U-Z
Hierarchical Win32 Category List
Base Services
Graphics Device Interface
User Interface
Atom Functions
| Win32 function | Description | .NET Framework API |
| AddAtom | Adds a character string to the local atom table. | System.String.Intern Note String is not exactly an atom. |
| FindAtom | Searches the local atom table for the specified character string. | System.String.IsInterned Note String is not exactly an atom. |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Bitmap Functions
| Win32 function | Description | .NET Framework API |
| AlphaBlend | Displays a bitmap with transparent or semitransparent pixels. | System.Drawing.Graphics.DrawImage |
| BitBlt | Performs a bit-block transfer. | System.Drawing.Graphics.DrawImage |
| CreateBitmap | Creates a bitmap. | System.Drawing.Bitmap constructor Note Creates a DIB, not a DDB. |
| GetBitmapDimensionEx | Gets the dimensions of a bitmap. | System.Drawing.Bitmap.Size |
| GetDIBColorTable | Retrieves RGB color values from a DIB section bitmap. | System.Drawing.Bitmap.Palette |
| GetDIBits | Copies a bitmap into a buffer. | System.Drawing.Bitmap.LockBits |
| GetPixel | Gets the RGB color value of the pixel at a given coordinate. | System.Drawing.Bitmap.GetPixel |
| GradientFill | Fills rectangle and triangle structures. | System.Drawing.Graphics.FillRectangle(Drawing2D.LinearGradiantBrush, Rectangle) |
| LoadBitmap | Loads a bitmap from a module's executable file. | System.Drawing.Bitmap.Bitmap(Type, String) |
| SetPixel | Sets the color for a pixel. | System.Drawing.Bitmap.SetPixel |
| SetPixelV | Sets a pixel to the best approximation of a color. | System.Drawing.Bitmap.SetPixel(…, Graphics.GetNearestColor(Color)) |
| StretchBlt | Copies a bitmap and stretches or compresses it. | System.Drawing.Graphics.DrawImage |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Brush Functions
| Win32 function | Description | .NET Framework API |
| CreateBrushIndirect | Creates a brush with a specified style, color, and pattern. | Any of the following:
System.Drawing.Brushes
System.Drawing.SolidBrush
System.Drawing.TextureBrush
System.Drawing.Drawing2D.HatchBrush
System.Drawing.Drawing2D.LinearGradientBrush
System.Drawing.Drawing2D.PathGradientBrush |
| CreateHatchBrush | Creates a brush with a hatch pattern and color. | System.Drawing.Drawing2D.HatchBrush constructor |
| CreatePatternBrush | Creates a brush with a bitmap pattern. | System.Drawing.TextureBrush constructor |
| CreateSolidBrush | Creates a brush with a solid color. | System.Drawing.SolidBrush constructor |
| GetSysColorBrush | Gets a handle for a brush that corresponds to a color index. | System.Drawing.Brushes class |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Button Functions
| Win32 function | Description | .NET Framework API |
| CheckDlgButton | Changes the check state of a button control. | System.Windows.Forms.CheckBox.Checked |
| CheckRadioButton | Adds a check mark to a specified radio button in a group and removes a check mark from all other radio buttons in the group. | System.Windows.Forms.RadioButton.Checked |
| IsDlgButtonChecked | Determines whether a button control has a check mark next to it or whether a three-state button control is grayed, checked, or neither. | System.Windows.Forms.CheckBox.CheckState |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Clipboard Functions
| Win32 function | Description | .NET Framework API |
| CountClipboardFormats | Retrieves the number of different data formats currently on the clipboard. | System.Windows.Forms.DataObject.GetFormats |
| EnumClipboardFormats | Enumerates the data formats currently available on the clipboard. | System.Windows.Forms.DataObject.GetFormats |
| GetClipboardData | Retrieves data from the clipboard in a specified format. | System.Windows.Forms.ClipBoard.GetDataObject |
| IsClipboardFormatAvailable | Determines whether the clipboard contains data in the specified format. | System.Windows.Forms.DataObject.GetDataPresent |
| RegisterClipboardFormat | Registers a new clipboard format. | System.Windows.Forms.DataFormats.GetFormat |
| SetClipboardData | Places data on the clipboard in a specified clipboard format. | System.Windows.Forms.ClipBoard.SetDataObject |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Clipping Functions
| Win32 function | Description | .NET Framework API |
| ExcludeClipRect | Creates a new clipping region that consists of the existing clipping region minus the specified rectangle. | System.Drawing.Graphics.ExcludeClip |
| ExtSelectClipRgn | Combines the specified region with the current clipping region using the specified mode. | System.Drawing.Graphics.SetClip |
| GetClipBox | Retrieves the dimensions of the tightest bounding rectangle that can be drawn around the current visible area on the device. | System.Drawing.Graphics.VisibleClipBounds |
| GetClipRgn | Retrieves a handle identifying the current application-defined clipping region for the specified device context. | System.Drawing.Graphics.Clip |
| IntersectClipRect | Creates a new clipping region from the intersection of the current clipping region and the specified rectangle. | System.Drawing.Graphics.IntersectClip |
| OffsetClipRgn | Moves the clipping region of a device context by the specified offsets. | System.Drawing.Graphics.TranslateClip |
| PtVisible | Determines whether the specified point is within the clipping region of a device context. | System.Drawing.Graphics.IsVisible |
| RectVisible | Determines whether any part of the specified rectangle lies within the clipping region of a device context. | System.Drawing.Graphics.IsVisible |
| SelectClipPath | Selects the current path as a clipping region for a device context, combining the new region with any existing clipping region by using the specified mode. | System.Drawing.Graphics.SetClip |
| SelectClipRgn | Selects a region as the current clipping region for the specified device context. | System.Drawing.Graphics.Clip |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Color Functions
| Win32 function | Description | .NET Framework API |
| CreateHalftonePalette | Creates a halftone palette for the specified device context. | System.Drawing.Graphics.GetHalftonePalette |
| CreatePalette | Creates a logical palette. | System.Drawing.Image.Palette |
| GetNearestColor | Retrieves a color value identifying a color from the system palette that will be displayed when the specified color value is used. | System.Drawing.Graphics.GetNearestColor |
| GetPaletteEntries | Retrieves a specified range of palette entries from the given logical palette. | System.Drawing.Image.Palette.Entries |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Combo Box Functions
| Win32 function | Description | .NET Framework API |
| DlgDirListComboBox | Replaces the contents of a combo box with the names of specified subdirectories and files. | System.Windows.Forms.ComboBox.Items.AddRange(System.IO.Directory.GetFileSystemEntries) |
| DlgDirSelectComboBoxEx | Retrieves the current selection from a combo box filled by using DlgDirListComboBox. | System.Windows.Forms.ComboBox.SelectedItem |
| GetComboBoxInfo | Retrieves information about a specified combo box. | System.Windows.Forms.ComboBox properties |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Common Dialog Box Functions
| Win32 function | Description | .NET Framework API |
| ChooseColor | Creates a Color dialog box that enables the user to select a color. | System.Windows.Forms.ColorDialog constructor
Note Dialog cannot be modified through a hook. |
| ChooseFont | Creates a Font dialog box that enables the user to choose attributes for a logical font. | System.Windows.Forms.FontDialog constructor
Note Dialog cannot be modified through a hook. |
| GetFileTitle | Retrieves the name of the specified file. | System.IO.FileInfo.Name Note Does not take user preferences into account. |
| GetOpenFileName | Creates an Open dialog box that lets the user specify the drive, directory, and name of a file or set of files to open. | System.Windows.Forms.OpenFileDialog.ShowDialog Note Dialog cannot be modified through a hook. |
| GetSaveFileName | Creates a Save dialog box that lets the user specify the drive, directory, and name of a file to save. | System.Windows.Forms.SaveFileDialog.ShowDialog Note Dialog cannot be modified through a hook. |
| PageSetupDlg | Creates a Page Setup dialog box that enables the user to specify the attributes of a printed page. | System.Windows.Forms.PageSetupDialog.ShowDialog Note Dialog cannot be modified through a hook. |
| PrintDlg | Displays a Print dialog box. | System.Windows.Forms.PrintDialog.ShowDialog Note Dialog cannot be modified through a hook. |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Console Functions
| Win32 function | Description | .NET Framework API |
| GetStdHandle | Retrieves a handle for the standard input, standard output, or standard error device. | System.Console.OpenStandardIn
System.Console.OpenStandardOut
System.Console.OpenStandardError |
| ReadConsole | Reads character input from the console input buffer and removes it from the buffer. | System.Console.Read |
| SetStdHandle | Sets the handle for the standard input, standard output, or standard error device. | System.Console.SetIn
System.Console.SetOut
System.Console.SetError |
| WriteConsole | Writes a character string to a console screen buffer beginning at the current cursor location. | System.Console.Write |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Coordinate Functions
| Win32 function | Description | .NET Framework API |
| ClientToScreen | Converts the client-area coordinates of a specified point to screen coordinates. | System.Windows.Forms.Form.PointToScreen |
| CombineTransform | Concatenates two world-space to page-space transformations. | System.Drawing.Drawing2D.Matrix.Multiply |
| DPtoLP | Converts device coordinates into logical coordinates. | System.Drawing.Graphics.TransformPoints |
| GetMapMode | Retrieves the current mapping mode. | System.Drawing.Graphics.PageUnit |
| GetWindowExtEx | Retrieves the x-extent and y-extent of the window for the specified device context. | System.Drawing.Graphics.PageScale |
| GetWindowOrgEx | Retrieves the x-coordinates and y-coordinates of the window origin for the specified device context. | System.Drawing.Graphics.Transform.OffsetX
System.Drawing.Graphics.Transform.OffsetY |
| GetWorldTransform | Retrieves the current world-space to page-space transformation. | System.Drawing.Graphics.Transform |
| LPtoDP | Converts logical coordinates into device coordinates. | System.Drawing.Graphics.TransformPoints |
| ModifyWorldTransform | Changes the world transformation for a device context using the specified mode. | System.Drawing.Graphics.Transform |
| OffsetViewportOrgEx | Modifies the viewport origin for a device context using the specified horizontal and vertical offsets. | System.Drawing.Graphics.TranslateTransform |
| OffsetWindowOrgEx | Modifies the window origin for a device context using the specified horizontal and vertical offsets. | System.Drawing.Graphics.TranslateTransform |
| ScreenToClient | Converts the screen coordinates of a specified point on the screen-to-client coordinates. | System.Windows.Forms.Form.PointToClient |
| SetMapMode | Sets the mapping mode of the specified device context. | System.Drawing.Graphics.PageUnit |
| SetWindowExtEx | Sets the horizontal and vertical extents of the window for a device context by using the specified values. | System.Drawing.Graphics.PageScale
Drawing.Graphics.ScaleTransform |
| SetWindowOrgEx | Specifies which window point maps to the viewport origin (0,0). | System.Drawing.Graphics.TranslateTransform |
| SetWorldTransform | Sets a two-dimensional linear transformation between world space and page space for the specified device context. | System.Drawing.Graphics.Transform |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Cursor Functions
| Win32 function | Description | .NET Framework API |
| ClipCursor | Confines the cursor to a rectangular area on the screen. | System.Windows.Forms.Cursor.Clip |
| CopyCursor | Copies the specified cursor. | System.Windows.Forms.Cursor.CopyHandle |
| CreateCursor | Creates a cursor having the specified size, bit patterns, and hot spot. | System.Windows.Forms.Cursor constructor
System.Windows.Forms.Cursor.Size
System.Windows.Forms.Cursor.Position |
| DestroyCursor | Destroys a cursor. | System.Windows.Forms.Cursor.Dispose |
| GetClipCursor | Retrieves the screen coordinates of the rectangular area to which the cursor is confined. | System.Windows.Forms.Cursor.Clip |
| GetCursor | Retrieves a handle to the current cursor. | System.Windows.Forms.Cursor.Handle |
| GetCursorInfo | Retrieves information about the global cursor. | System.Windows.Forms.Cursor.Position
System.Windows.Forms.SystemInformation.CursorSize |
| GetCursorPos | Retrieves the cursor's position. | System.Windows.Forms.Control.MousePosition
System.Windows.Forms.Cursor.Position |
| LoadCursor | Loads a cursor resource from an executable file. | System.Windows.Forms.Cursor constructor |
| LoadCursorFromFile | Creates a cursor based on data contained in a file. | System.Windows.Forms.Cursor constructor |
| SetCursor | Sets the cursor shape. | System.Windows.Forms.Cursor.Current |
| SetCursorPos | Moves the cursor to the specified screen coordinates. | System.Windows.Forms.Cursor.Position |
| ShowCursor | Displays or hides the cursor. | System.Windows.Forms.Cursor.Show
Windows.Forms.Cursor.Hide |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Debugging Functions
| Win32 function | Description | .NET Framework API |
| DebugActiveProcess | Enables a debugger to attach to an active process and debug it. | System.Diagnostics.Debugger.Launch |
| DebugBreak | Causes a breakpoint exception to occur in the current process. | System.Diagnostics.Debugger.Break |
| IsDebuggerPresent | Determines whether the calling process is running under the context of a debugger. | System.Diagnostics.Debugger.IsAttached |
| OutputDebugString | Sends a string to the debugger for display. | System.Diagnostics.Debugger.Log |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Device Context Functions
| Win32 function | Description | .NET Framework API |
| ChangeDisplaySettings | Changes the settings of the default display device to the specified graphics mode. | System.Management.ManagementClass("Win32_VideoController") |
| ChangeDisplaySettingsEx | Changes the settings of the specified display device to the specified graphics mode. | System.Management.ManagementClass("Win32_VideoController") |
| DeviceCapabilities | Retrieves the capabilities of a printer device driver. | System.Drawing.Printing.PageSettings
System.Drawing.Printing.PrinterSettings |
| EnumDisplayDevices | Retrieves information about the display devices in a system. | System.Management.ManagementClass("Win32_DesktopMonitor") |
| EnumDisplaySettings | Retrieves information about one of the graphics modes for a display device. | System.Management.ManagementClass("CIM_VideoControllerResolution") |
| GetDC | Retrieves a handle to a display device context for the client area of a specified window or for the entire screen. | To retrieve a Graphics object, use any of the following:
System.Drawing.Graphics.FromHwnd(Windows.Forms.Control.Handle)
System.Drawing.Printing.PrintPageEventArgs.Graphics
System.Windows.Forms.PaintEventArgs.Graphics To explicitly retrieve a handle, use the following:
System.Drawing.Graphics.GetHdc |
| GetDCEx | Retrieves a handle to a display device context for the client area of a specified window or for the entire screen. | To retrieve a Graphics object, use any of the following:
System.Drawing.Graphics.FromHwnd(Windows.Forms.Control.Handle)
System.Drawing.Printing.PrintPageEventArgs.Graphics
System.Windows.Forms.PaintEventArgs.Graphics To explicitly retrieve a handle, use the following:
System.Drawing.Graphics.GetHdc |
| GetDeviceCaps | Retrieves device-specific information for the specified device. | System.Drawing.Graphics properties
System.Drawing.Printing.PrinterSettings
System.Management classes |
| GetLayout | Retrieves the layout of a device context. | System.Windows.Forms.Control.RightToLeft |
| GetObject | Retrieves information for the specified graphics object. | System.Drawing.Bitmap properties
System.Drawing.Brush properties
System.Drawing.Font properties
System.Drawing.Pen properties |
| GetObjectType | Retrieves the type of the specified object. | System.Object.GetType |
| GetStockObject | Retrieves a handle to one of the stock pens, brushes, fonts, or palettes. | System.Drawing.Brushes
System.Drawing.Pens |
| ReleaseDC | Releases a device context, freeing it for use by other applications. | System.Drawing.Graphics.ReleaseHdc |
| SetLayout | Sets the layout for a device context. | System.Windows.Forms.Control.RightToLeft = System.Windows.Forms.RightToLeft.Yes |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Dialog Box Functions
| Win32 function | Description | .NET Framework API |
| CreateDialog | Creates a modeless dialog box from a dialog box template resource. | System.Windows.Forms.Form constructor
System.Windows.Forms.Form properties |
| CreateDialogIndirect | Creates a modeless dialog box from a dialog box template in memory. | System.Windows.Forms.Form constructor
System.Windows.Forms.Form properties |
| DefDlgProc | Calls the default dialog box window procedure to provide default processing for any window messages that a dialog box with a private window class does not process. | System.Windows.Forms.Form.DefWndProc |
| DialogBox | Creates a modal dialog box from a dialog box template resource. | System.Windows.Forms.Form constructor
System.Windows.Forms.Form.ShowDialog |
| DialogBoxIndirect | Creates a modal dialog box from a dialog box template in memory. | System.Windows.Forms.Form constructor
System.Windows.Forms.Form.ShowDialog |
| DialogProc | An application-defined callback function used with the CreateDialog and DialogBox families of functions. | System.Windows.Forms.Form.WndProc |
| EndDialog | Destroys a modal dialog box. | System.Windows.Forms.Form.Close |
| GetDlgCtrlID | Retrieves the identifier of the specified control. | System.Windows.Forms.Form.Controls.IndexOf |
| GetDlgItem | Retrieves a handle to a control in the specified dialog box. | System.Windows.Forms.Form.Controls.Item |
| GetDlgItemInt | Translates the text of a specified control in a dialog box into an integer value. | System.Int32.Parse(Form.Text)
System.UInt32.Parse(Form.Text) |
| GetDlgItemText | Retrieves the title or text associated with a control in a dialog box. | System.Windows.Forms.Form.Controls.Item[].Text |
| GetNextDlgGroupItem | Retrieves a handle to the first control in a group of controls that precedes (or follows) the specified control. | Iterate through the controls:
System.Windows.Forms.Form.Controls.Item Remember to determine whether the control is active by referencing the Enabled and Visible properties of the control. Note The order that the controls are presented in might not be the same order in which GetNextDlgGroupItem presents the controls. |
| GetNextDlgTabItem | Retrieves a handle to the first control that has the WS_TABSTOP style that precedes (or follows) the specified control. | Iterate through the controls:
System.Windows.Forms.Form.Controls.Item Remember to determine whether the control is active by referencing the Enabled, Visible, and TabStop properties of the control. Note The order that the controls are presented in might not be the same order in which GetNextDlgGroupItem presents the controls. |
| MessageBox | Creates, displays, and operates a message box. | System.Windows.Forms.MessageBox.Show |
| MessageBoxEx | Creates, displays, and operates a message box. | System.Windows.Forms.MessageBox.Show |
| MessageBoxIndirect | Creates, displays, and operates a message box. | System.Windows.Forms.MessageBox.Show |
| SendDlgItemMessage | Sends a message to the specified control in a dialog box. | System.Windows.Forms.Form.WndProc(System.Windows.Forms.Message) |
| SetDlgItemInt | Sets the text of a control in a dialog box to the string representation of a specified integer value. | System.Windows.Forms.Control.Text = System.Int32.ToString |
| SetDlgItemText | Sets the title or text of a control in a dialog box. | System.Windows.Forms.Control.Text |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Dynamic-Link Library Functions
| Win32 function | Description | .NET Framework API |
| GetModuleFileName | Retrieves the full path and file name for the file containing the specified module. | System.Reflection.Module.FullyQualifiedName |
| GetModuleHandle | Retrieves a module handle for the specified module. | System.Runtime.InteropServices.Marshal.GetHINSTANCE |
| LoadLibrary | Maps the specified executable module into the address space of the calling process. | Any of the following:
System.Reflection.Assembly.Load
System.Reflection.Assembly.LoadFrom
System.Reflection.Assembly.LoadWithPartialName |
| LoadLibraryEx | Maps the specified executable module into the address space of the calling process. | Any of the following:
System.Reflection.Assembly.Load
System.Reflection.Assembly.LoadFrom
System.Reflection.Assembly.LoadWithPartialName |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Error Handling Functions
| Win32 function | Description | .NET Framework API |
| FatalAppExit | Displays a message box and terminates the application when the message box is closed. | System.Windows.Forms.MessageBox.Show
System.Diagnostics.Process.Kill |
| GetLastError | Retrieves the calling thread's last-error code value. | System.Runtime.InteropServices.Marshall.GetLastWin32Error |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Event Logging Functions
| Win32 function | Description | .NET Framework API |
| ClearEventLog | Clears the specified event log, and optionally saves the current copy of the log file to a backup file. | System.Diagnostics.EventLog.Clear |
| CloseEventLog | Closes a read handle to the specified event log. | System.Diagnostics.EventLog.Close |
| DeregisterEventSource | Closes a write handle to the specified event log. | System.Diagnostics.EventLog.DeleteEventSource |
| GetNumberOfEventLogRecords | Retrieves the number of records in the specified event log. | System.Diagnostics.EventLog.Entries.Count |
| GetOldestEventLogRecord | Retrieves the absolute record number of the oldest record in the specified event log. | System.Diagnostics.EventLogEntryCollection[0]
System.Diagnostics.EventLogEntry.TimeWritten |
| NotifyChangeEventLog | Enables an application to receive notification when an event is written to the specified event log file. | System.Diagnostics.EventLog.EnableRaisingEvents |
| OpenBackupEventLog | Opens a handle to a backup event log. | System.Diagnostics.EventLog constructor |
| OpenEventLog | Opens a handle to an event log. | System.Diagnostics.EventLog constructor |
| ReadEventLog | Reads a whole number of entries from the specified event log. | System.Diagnostics.EventLogEntryCollection.CopyTo |
| RegisterEventSource | Retrieves a registered handle to an event log. | System.Diagnostics.EventLog.CreateEventSource |
| ReportEvent | Writes an entry at the end of the specified event log. | System.Diagnostics.EventLog.WriteEntry |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
File I/O Functions
| Win32 function | Description | .NET Framework API |
| CopyFile | Copies an existing file to a new file. | Either of the following:
System.IO.File.Copy
IO.FileInfo.CopyTo |
| CreateDirectory | Creates a new directory. | Any of the following:
System.IO.Directory.CreateDirectory
System.IO.Directory.CreateSubdirectory
System.IO.DirectoryInfo.Create |
| CreateFile | Creates or opens a file object. | System.IO.File class and System.IO.FileInfo class |
| DeleteFile | Deletes an existing file. | Any of the following:
System.IO.Directory.Delete
System.IO.DirectoryInfo.Delete
System.IO.File.Delete
System.IO.FileInfo.Delete |
| FileIOCompletionRoutine | An application-defined callback function used with ReadFileEx and WriteFileEx. | User defined. |
| FindClose | Closes the specified search handle. | See FindFirstFile and FindNextFile |
| FindCloseChangeNotification | Stops change notification handle monitoring. | System.IO.FileSystemWatcher.EnableRaisingEvents |
| FindFirstChangeNotification | Creates a change notification handle. | System.IO.FileSystemWatcher class |
| FindFirstFile | Searches a directory for a file whose name matches the specified file name. | Any of the following:
System.IO.Directory.Exists
System.IO.Directory.GetDirectories
System.IO.Directory.GetFileSystemEntries
System.IO.Directory.GetFiles
System.IO.DirectoryInfo.Exists
System.IO.DirectoryInfo.GetDirectories
System.IO.DirectoryInfo.GetFileSystemInfos
System.IO.DirectoryInfo.GetFiles
System.IO.File.Exists
System.IO.FileInfo.Exists |
| FindFirstFileEx | Searches a directory for a file whose name and attributes match the specified file name. | Same as FindFirstFile |
| FindNextChangeNotification | Requests that the operating system signal a change notification handle the next time it detects an appropriate change. | System.IO.FileSystemWatcher class |
| FindNextFile | Continues a file search. | Any of the following:
System.IO.Directory.GetDirectories
System.IO.Directory.GetFileSystemEntries
System.IO.Directory.GetFiles
System.IO.DirectoryInfo.GetDirectories
System.IO.DirectoryInfo.GetFileSystemInfos
System.IO.DirectoryInfo.GetFiles |
| FlushFileBuffers | Clears the buffers for the specified file and causes all buffered data to be written to the file. | System.IO.FileStream.Flush |
| GetBinaryType | Determines whether a file is executable. | System.IO.FileSystemInfo.Extension Note Only manipulates strings; does not do a file-system check. |
| GetCurrentDirectory | Retrieves the current directory for the current process. | System.IO.Directory.GetCurrentDirectory |
| GetDriveType | Determines whether a disk drive is a removable, fixed, CD-ROM, RAM disk, or network drive. | System.Management.ManagementObject("Win32_LogicalDisk.DeviceID=\"C:\"").Get
System.Management.ManagementObject.Properties
System.IO.DriveInfo.DriveType |
| GetFileAttributes | Retrieves attributes for a specified file or directory. | Any of the following:
System.IO.Directory.GetAttributes
System.IO.File.GetAttributes
System.IO.FileSystemInfo.Attributes |
| GetFileAttributesEx | Retrieves attributes for a specified file or directory. | Any of the following:
System.IO.Directory.GetAttributes
System.IO.File.GetAttributes
System.IO.FileSystemInfo.Attributes |
| GetFileInformationByHandle | Retrieves file information for a specified file. | System.IO.FileInfo properties |
| GetFileSize | Retrieves the size of a specified file. | Either of the following:
System.IO.FileInfo.Length
System.IO.FileStream.Length |
| GetFileSizeEx | Retrieves the size of a specified file. | Either of the following:
System.IO.FileInfo.Length
System.IO.FileStream.Length |
| GetFullPathName | Retrieves the full path and file name of a specified file. | Either of the following:
System.IO.FileSystemInfo.FullName
System.IO.Path.GetFullPath |
| GetTempFileName | Creates a name for a temporary file. | System.IO.Path.GetTempFileName |
| GetTempPath | Retrieves the path of the directory designated for temporary files. | System.IO.Path.GetTempPath |
| LockFile | Locks a region in an open file. | System.IO.FileStream.Lock |
| LockFileEx | Locks a region in an open file for shared or exclusive access. | System.IO.FileStream.Lock |
| MoveFile | Moves an existing file or a directory. | Any of the following:
System.IO.Directory.Move
System.IO.DirectoryInfo.MoveTo
System.IO.File.Move
System.IO.FileInfo.MoveTo |
| ReadDirectoryChangesW | Retrieves information describing the changes occurring within a directory. | System.IO.FileSystemWatcher class |
| ReadFile | Reads data from a file, starting at the specified position. | Any of the following:
System.IO.FileStream.BeginRead/EndRead
System.IO.FileStream.Read
System.IO.FileStream.ReadByte |
| ReadFileEx | Reads data from a file asynchronously. | System.IO.FileStream.BeginRead/EndRead |
| RemoveDirectory | Deletes an existing empty directory. | Either of the following:
System.IO.Directory.Delete
System.IO.DirectoryInfo.Delete |
| SearchPath | Searches for the specified file. | Any of the following:
System.IO.Directory.Exists
System.IO.Directory.GetDirectories
System.IO.Directory.GetFileSystemEntries
System.IO.Directory.GetFiles
System.IO.DirectoryInfo.Exists
System.IO.DirectoryInfo.GetDirectories
System.IO.DirectoryInfo.GetFileSystemInfos
System.IO.DirectoryInfo.GetFiles
System.IO.File.Exists
System.IO.FileInfo.Exists |
| SetCurrentDirectory | Changes the current directory for the current process. | System.IO.Directory.SetCurrentDirectory |
| SetEndOfFile | Moves the end-of-file position for the specified file. | System.IO.FileStream.SetLength |
| SetFileAttributes | Sets the attributes for a file. | System.IO.File.SetAttributes |
| SetFilePointer | Moves the file pointer of an open file. | Either of the following:
System.IO.FileStream.Position
System.IO.FileStream.Seek |
| SetFilePointerEx | Moves the file pointer of an open file. | Either of the following:
System.IO.FileStream.Position
System.IO.FileStream.Seek |
| UnlockFile | Unlocks a previously locked region in an open file. | System.IO.FileStream.Unlock |
| UnlockFileEx | Unlocks a previously locked region in an open file. | System.IO.FileStream.Unlock |
| WriteFile | Writes data to a file. | Any of the following:
System.IO.FileStream.BeginWrite and EndWrite
System.IO.FileStream.Write
System.IO.FileStream.WriteByte
System.IO.BinaryWriter.Write |
| WriteFileEx | Writes data to a file asynchronously. | System.IO.FileStream.BeginWrite and EndWrite |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
File System Functions
Used with file systems:
| Win32 function | Description | .NET Framework API |
| GetDiskFreeSpace | Retrieves information about the specified disk, including the amount of free space on the disk. | System.Management.ManagementObject("Win32_LogicalDisk.DeviceID=\"C:\"").Get
System.Management.ManagementObject.Properties |
| GetDiskFreeSpaceEx | Retrieves information about the specified disk, including the amount of free space on the disk. | System.Management.ManagementObject("Win32_LogicalDisk.DeviceID=\"C:\"").Get
System.Management.ManagementObject.Properties |
| GetLogicalDriveStrings | Fills a buffer with strings that specify valid drives in the system. | Either of the following:
System.Environment.GetLogicalDrives
System.IO.Directory.GetLogicalDrives |
Used with an encrypted file system:
| Win32 function | Description | .NET Framework API |
| DecryptFile | Decrypts an encrypted file or directory. | System.Security.Cryptography.CryptoStream.Read |
| EncryptFile | Encrypts a file or directory. | System.Security.Cryptography.CryptoStream.Write |
| FileEncryptionStatus | Retrieves the encryption status of the specified file. | System.IO.FileSystemInfo.Attributes |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Filled Shape Functions
| Win32 function | Description | .NET Framework API |
| Chord | Draws an area bounded by an ellipse and a line segment. | System.Drawing.Graphics.DrawArc
System.Drawing.Graphics.DrawLine |
| Ellipse | Draws an ellipse. | System.Drawing.Graphics.DrawEllipse
System.Drawing.Graphics.FillEllipse |
| FillRect | Fills a rectangle using a brush. | System.Drawing.Graphics.FillRectangle |
| InvertRect | Inverts the color values of the pixels in a rectangle. | System.Windows.Forms.ControlPaint.DrawReversibleFrame
System.Windows.Forms.ControlPaint.DrawReversibleLine |
| Pie | Draws a pie-shaped wedge bounded by an ellipse and two radials. | System.Drawing.Graphics.DrawPie
System.Drawing.Graphics.FillPie |
| Polygon | Draws a polygon. | System.Drawing.Graphics.DrawPolygon
System.Drawing.Graphics.FillPolygon |
| Rectangle | Draws a rectangle. | System.Drawing.Graphics.DrawRectangle
System.Drawing.Graphics.FillRectangle |
| RoundRect | Draws a rectangle with rounded corners. | System.Drawing.Drawing2D.GraphicsPath.AddLines
System.Drawing.Pen.LineJoin = System.Drawing.Pen.LineJoin.Round
System.Drawing.Graphics.DrawPath
System.Drawing.Graphics.FillPath |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Font and Text Functions
| Win32 function | Description | .NET Framework API |
| AddFontMemResourceEx | Adds an embedded font to the system font table. | System.Drawing.Text.PrivateFontCollection.AddMemoryFont |
| AddFontResourceEx | Adds a private or non-enumerable font to the system font table. | System.Drawing.Text.PrivateFontCollection.AddFontFile |
| CreateFont | Creates a logical font. | System.Drawing.Font constructor |
| DrawText | Draws formatted text in a rectangle. | System.Drawing.Graphics.DrawString |
| DrawTextEx | Draws formatted text in a rectangle. | System.Drawing.Graphics.DrawString |
| EnumFontFamExProc | An application-defined callback function used with EnumFontFamiliesEx to process fonts. | System.Drawing.Text.InstalledFontCollection.Families |
| EnumFontFamiliesEx | Enumerates all fonts in the system with certain characteristics. | System.Drawing.Text.InstalledFontCollection.Families |
| ExtTextOut | Draws a character string. | System.Drawing.Graphics.DrawString |
| GetCharABCWidths | Gets the widths of consecutive characters from the TrueType font. | Get a Region[] for the characters:
System.Drawing.Graphics.MeasureCharacterRanges; Determine the width of each Region:
System.Drawing.Rectangle.Round(Region.GetBounds).Width |
| GetCharABCWidthsFloat | Gets the widths of consecutive characters from the current font. | Get a Region[] for the characters:
System.Drawing.Graphics.MeasureCharacterRanges; Determine the width of each Region:
System.Drawing.Region.GetBounds.Width |
| GetCharWidth32 | Gets the widths of consecutive characters from the current font. | Get a Region[] for the characters:
System.Drawing.Graphics.MeasureCharacterRanges; Determine the width of each Region:
System.Drawing.Rectangle.Round(Region.GetBounds).Width |
| GetCharWidthFloat | Gets the fractional widths of consecutive characters from the current font. | Get a Region[] for the characters:
System.Drawing.Graphics.MeasureCharacterRanges; Determine the width of each Region:
System.Drawing.Region.GetBounds.Width |
| GetOutlineTextMetrics | Gets text metrics for TrueType fonts. | System.Drawing.Font properties |
| GetTabbedTextExtent | Computes the width and height of a character string, including tabs. | System.Drawing.Graphics.MeasureString |
| GetTextAlign | Gets the text-alignment setting for a device context. | System.Drawing.StringFormat.Alignment
System.Drawing.StringFormat.LineAlignment |
| GetTextColor | Gets the text color for a device context. | System.Drawing.SolidBrush.Color |
| GetTextExtentPoint32 | Computes the width and height of a string of text. | System.Drawing.Graphics.MeasureString |
| GetTextFace | Gets the name of the font that is selected into a device context. | System.Drawing.Font.Name |
| GetTextMetrics | Fills a buffer with the metrics for a font. | System.Drawing.Font properties |
| RemoveFontMemResourceEx | Removes a font whose source was embedded in a document from the system font table. | System.Drawing.Text.PrivateFontCollection.Dispose |
| RemoveFontResourceEx | Removes a private or non-enumerable font from the system font table. | System.Drawing.Text.PrivateFontCollection.Dispose |
| SetTextAlign | Sets the text-alignment flags for a device context. | System.Drawing.StringFormat.Alignment
System.Drawing.StringFormat.LineAlignment |
| SetTextColor | Sets the text color for a device context. | Either of the following:
System.Drawing.Brushes
System.Drawing.SolidBrush.SolidBrush(Color) |
| TabbedTextOut | Writes a character string at a location, expanding tabs to specified values. | System.Drawing.Graphics.DrawString using System.Drawing.StringFormat.SetTabStops |
| TextOut | Writes a character string at a location. | System.Drawing.Graphics.DrawString |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Icon Functions
| Win32 function | Description | .NET Framework API |
| CopyIcon | Copies an icon from another module. | System.Drawing.Icon.FromHandle |
| CreateIcon | Creates an icon with a specified size, color, and bit pattern. | System.Drawing.Icon constructor |
| DestroyIcon | Destroys an icon. | System.Drawing.Icon.Dispose |
| DrawIcon | Draws an icon. | System.Drawing.Graphics.DrawIcon |
| DuplicateIcon | Creates a duplicate of a specified icon. | System.Drawing.Icon.Clone |
| LoadIcon | Loads an icon from the executable file associated with an application. | System.Drawing.Icon constructor |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Input Method Editor Functions
| Win32 function | Description | .NET Framework API |
| ImmAssociateContext | Associates the specified input context with the specified window. | Either of the following:
System.Windows.Forms.Control.DefaultImeMode
System.Windows.Forms.Control.ImeMode |
| ImmAssociateContextEx | Changes the association between the input method context and the specified window or its children. | Any of the following:
System.Windows.Forms.Control.DefaultImeMode
System.Windows.Forms.Control.ImeMode
System.Windows.Forms.Control.ResetImeMode |
| ImmDisableIME | Disables the Input Method Editor. | System.Windows.Forms.Control.ImeMode = System.Windows.Forms.ImeMode.Disable |
| ImmGetContext | Retrieves the input context associated with the specified window. | System.Windows.Forms.Control.ImeMode |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Keyboard Accelerator Functions
| Win32 function | Description | .NET Framework API |
| TranslateAccelerator | Processes accelerator keys for menu commands. | System.Windows.Forms.MenuItem.Shortcut |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Keyboard Input Functions
| Win32 function | Description | .NET Framework API |
| ActivateKeyboardLayout | Sets the input locale identifier for the calling thread or the current process. | System.Windows.Forms.InputLanguage.CurrentInputLanguage |
| EnableWindow | Enables or disables mouse and keyboard input to the specified window or control. | System.Windows.Forms.Control.Enabled |
| GetActiveWindow | Retrieves the window handle to the active window attached to the calling thread's message queue. | System.Windows.Forms.Form.ActiveForm |
| GetFocus | Retrieves the handle to the window that has the keyboard focus. | System.Windows.Forms.Control.Controls[].Focused |
| GetKeyboardLayout | Retrieves the active input locale identifier for the specified thread. | System.Windows.Forms.InputLanguage.CurrentInputLanguage |
| GetKeyboardLayoutList | Retrieves the input locale identifiers corresponding to the current set of input locales in the system. | System.Windows.Forms.InputLanguage.InstalledInputLanguages |
| GetKeyboardLayoutName | Retrieves the name of the active input locale identifier. | System.Windows.Forms.InputLanguage.LayoutName |
| GetKeyNameText | Retrieves a string that represents the name of a key. | System.Windows.Forms.KeyEventArgs.KeyCode.ToString |
| IsWindowEnabled | Determines whether the specified window is enabled for mouse and keyboard input. | System.Windows.Forms.Form.Enabled |
| SetActiveWindow | Activates a window. | System.Windows.Forms.Activate |
| SetFocus | Sets the keyboard focus to the specified window. | System.Windows.Forms.Form.Focus |
| ToAscii | Translates the specified virtual-key code and keyboard state to the corresponding character or characters. | System.Windows.Forms.KeyPressEventArgs.KeyChar |
| ToUnicode | Translates the specified virtual-key code and keyboard state to the corresponding Unicode character or characters. | System.Windows.Forms.KeyPressEventArgs.KeyChar |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Line and Curve Functions
| Win32 function | Description | .NET Framework API |
| AngleArc | Draws a line segment and an arc. | System.Drawing.Graphics.DrawLine
System.Drawing.Graphics.DrawArc |
| Arc | Draws an elliptical arc. | System.Drawing.Graphics.DrawArc |
| ArcTo | Draws an elliptical arc. | System.Drawing.Graphics.DrawArc |
| LineTo | Draws a line from the current position up to, but not including, the specified point. | System.Drawing.Graphics.DrawLine |
| PolyBezier | Draws one or more B&x00E9;zier curves. | System.Drawing.Graphics.DrawBeziers |
| Polyline | Draws a series of line segments by connecting the points in the specified array. | System.Drawing.Graphics.DrawLines |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
List Box Functions
| Win32 function | Description | .NET Framework API |
| DlgDirList | Replaces the contents of a list box with the names of the subdirectories and files in a specified directory. | System.Windows.Forms.ListBox.Items.AddRange(System.IO.Directory.GetFileSystemEntries) |
| DlgDirSelectEx | Retrieves the current selection from a single-selection list box. | System.Windows.Forms.ListBox.SelectedItem |
| GetListBoxInfo | Retrieves information about the specified list box. | System.Windows.Forms.ListBox properties |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Memory Management Functions
Memory management functions:
| Win32 function | Description | .NET Framework API |
| GlobalMemoryStatus | Obtains information about the system's current usage of both physical and virtual memory. | System.Management.ManagementClass("Win32_OperatingSystem")
System.Management.ManagementClass.GetInstances
System.Management.ManagementObject.Properties |
| GlobalMemoryStatusEx | Obtains information about the system's current usage of both physical and virtual memory. | System.Management.ManagementClass("Win32_OperatingSystem")
System.Management.ManagementClass.GetInstances
System.Management.ManagementObject.Properties |
Global and local functions:
| Win32 function | Description | .NET Framework API |
| GlobalAlloc | Allocates the specified number of bytes from the heap. | System.Runtime.InteropServices.Marshall.AllocHGlobal |
| GlobalFree | Frees the specified global memory object. | System.Runtime.InteropServices.Marshall.FreeHGlobal |
| GlobalReAlloc | Changes the size or attributes of a specified global memory object. | System.Runtime.InteropServices.Marshall.ReAllocHGlobal |
| LocalAlloc | Allocates the specified number of bytes from the heap. | System.Runtime.InteropServices.Marshall.AllocHGlobal |
| LocalFree | Frees the specified local memory object. | System.Runtime.InteropServices.Marshall.FreeHGlobal |
| LocalReAlloc | Changes the size or the attributes of a specified local memory object. | System.Runtime.InteropServices.Marshall.ReAllocHGlobal |
Alphabetical Win32 Category List
Hierarchical Win32 Category List
Menu Functions
| Win32 function | Descriptions | .NET Framework API |
| AppendMenu | Appends an item to various menus and submenus. | System.Windows.Forms.Menu.MenuItemCollection.Add |
| CheckMenuItem | Checks or clears a menu item. | System.Windows.Forms.MenuItem.Checked |
| CheckMenuRadioItem | Checks a specified menu item and makes it a radio item. | System.Windows.Forms.MenuItem.RadioCheck |
| CreateMenu | Creates a menu. | Any of the following:
System.Windows.Forms.ContextMenu constructor
System.Windows.Forms.MainMenu constructor
System.Windows.Forms.Menu.MenuItemCollection constructor |
| CreatePopupMenu | Creates a drop-down menu, submenu, or shortcut menu. | Either of the following:
System.Windows.Forms.ContextMenu constructor
System.Windows.Forms.Menu.MenuItemCollection constructor |
| DeleteMenu | Deletes a menu item. | System.Windows.Forms.Menu.MenuItemCollection.Remove |
| DestroyMenu | Deletes a menu. | System.Windows.Forms.Menu.Dispose |
| EnableMenuItem | Enables, disables, or grays a menu item. | System.Windows.Forms.MenuItem.Enabled |
| GetMenu | Gets a handle to the menu. | System.Windows.Forms.Form.Menu.Handle |
| GetMenuBarInfo | Gets information about a menu bar. | System.Windows.Forms.Form.Menu |
| GetMenuCheckMarkDimensions | Returns the dimensions of the default check-mark bitmap. | System.Windows.Forms.SystemInformation.MenuCheckSize |
| GetMenuDefaultItem | Gets the default menu item on a menu. | System.Windows.Forms.MenuItem.DefaultItem |
| GetMenuInfo | Gets information about a menu. | System.Windows.Forms.MenuItem properties |
| GetMenuItemCount | Gets the number of items in a menu. | System.Windows.Forms.Menu.MenuItemCollection.Count |
| GetMenuItemID | Gets the identifier of a menu item. | System.Windows.Forms.MenuItem.MenuID |
| GetMenuItemInfo | Gets information about a menu item. | System.Windows.Forms.MenuItem properties |
| GetMenuItemRect | Gets the bounding rectangle for a menu item. | System.Windows.Forms.MenuItem.DrawItem
System.Windows.Forms.DrawItemEventArgs.Bounds |
| GetMenuState | Gets the menu flags associated with a menu item. | System.Windows.Forms.MenuItem.Break
System.Windows.Forms.MenuItem.BarBreak
System.Windows.Forms.MenuItem.Checked
System.Windows.Forms.MenuItem.Enabled
System.Windows.Forms.MenuItem.OwnerDraw |
| GetMenuString | Copies the text string of a menu item into a buffer. | System.Windows.Forms.MenuItem.Text |
| GetSubMenu | Gets a handle to the drop-down menu or submenu activated by a menu item. | System.Windows.Forms.Menu.MenuItems[].Handle |
| InsertMenu | Inserts a new menu item into a menu. | System.Windows.Forms.Menu.MenuItemCollection.Add |
| InsertMenuItem | Inserts a new menu item in a menu. | System.Windows.Forms.Menu.MenuItemCollection.Add |
| ModifyMenu< |