SetBkMode

This function sets the background mix mode of the specified device context. The background mix mode is used with text, hatched brushes, and with non-solid pen styles.

int SetBkMode(
HDC hdc, 
int iBkMode
); 

Parameters

• hdc
  [in] Handle to the device context.
• iBkMode
  [in] Specifies the background mode. It is either of the following values.

  Value	Description
  OPAQUE	Background is filled with the current background color before the text, hatched brush, or pen is drawn.
  TRANSPARENT	Background remains untouched.

Return Values

If the function succeeds, the return value specifies the previous background mode.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

The SetBkMode function affects the line styles for lines drawn using a pen created by the CreatePen function. SetBkMode does not affect lines drawn using a pen created by the ExtCreatePen function.

The iBkMode parameter can also be set to driver-specific values. GDI passes such values to the device driver and otherwise ignores them.

The iBKMode parameter is stored internally as a single byte.

Requirements

Note   This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.

See Also

CreatePen, GetBkMode, GetLastError

 Last updated on Tuesday, July 13, 2004

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