HOW TO：在 Windows Form 上繪製文字
更新：2007 年 11 月
下列程式碼範例示範如何使用 Graphics 的 DrawString 方法，在表單上繪製文字。此外，您也可以使用 TextRenderer 在表單上繪製文字。如需詳細資訊，請參閱 HOW TO：使用 GDI 繪製文字。
範例
Public Sub DrawString()
Dim formGraphics As System.Drawing.Graphics = Me.CreateGraphics()
Dim drawString As String = "Sample Text"
Dim drawFont As New System.Drawing.Font("Arial", 16)
Dim drawBrush As New _
System.Drawing.SolidBrush(System.Drawing.Color.Black)
Dim x As Single = 150.0
Dim y As Single = 50.0
Dim drawFormat As New System.Drawing.StringFormat
formGraphics.DrawString(drawString, drawFont, drawBrush, _
x, y, drawFormat)
drawFont.Dispose()
drawBrush.Dispose()
formGraphics.Dispose()
End Sub
public void DrawString()
{
System.Drawing.Graphics formGraphics = this.CreateGraphics();
string drawString = "Sample Text";
System.Drawing.Font drawFont = new System.Drawing.Font("Arial", 16);
System.Drawing.SolidBrush drawBrush = new System.Drawing.SolidBrush(System.Drawing.Color.Black);
float x = 150.0F;
float y = 50.0F;
System.Drawing.StringFormat drawFormat = new System.Drawing.StringFormat();
formGraphics.DrawString(drawString, drawFont, drawBrush, x, y, drawFormat);
drawFont.Dispose();
drawBrush.Dispose();
formGraphics.Dispose();
}
public:
void DrawString()
{
System::Drawing::Graphics^ formGraphics = this->CreateGraphics();
String^ drawString = "Sample Text";
System::Drawing::Font^ drawFont =
gcnew System::Drawing::Font("Arial", 16);
System::Drawing::SolidBrush^ drawBrush = gcnew
System::Drawing::SolidBrush(System::Drawing::Color::Black);
float x = 150.0F;
float y = 50.0F;
System::Drawing::StringFormat^ drawFormat =
gcnew System::Drawing::StringFormat();
formGraphics->DrawString(drawString, drawFont, drawBrush, x,
y, drawFormat);
delete drawFont;
delete drawBrush;
delete formGraphics;
}
編譯程式碼
您不能在 Load 事件處理常式中呼叫 DrawString 方法。如果表單被重新調整或被另一表單遮住，將不會重新繪製表單的內容。若要自動重新繪製內容，您應該覆寫 OnPaint 方法。
穩固程式設計
下列情形可能會造成例外狀況：
- 未安裝 Arial 字型