Graphics.FromHwnd Method
Assembly: System.Drawing (in system.drawing.dll)
You should always call the Dispose method to release the Graphics and related resources created by the FromHwnd method.
The following code example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler, as well as thisForm, the Form for the example. The code performs the following actions:
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Creates a new internal pointer variable hwnd and sets it to the handle of the example's form.
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Creates a new Graphics from the handle.
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Draws a rectangle to the new Graphics using a red pen.
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Disposes the new Graphics.
- SecurityPermission for access to unmanaged code. Related enumeration: UnmanagedCode.
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.