Declare Function GetDC Lib "user32.dll" (ByVal hWnd As Long) As Long
Platforms: Win 32s, Win 95/98, Win NT
GetDC returns the device context (DC) of a window or other device, given the object's handle. When you are finished using the device context, you should use ReleaseDC to free up system resources. If you try to get the device context of something that is not a device (i.e., pass the function a handle to a file) or another error occurs, the function will instead return 0. Do not use DeleteDC to destroy the device context when you are done.
Example:
' Find the device context of the desktop
Dim deskhwnd As Long ' handle to the desktop
Dim deskhdc As Long ' device context to the desktop
Dim retval As Long ' return value
deskhwnd = GetDesktopWindow() ' get the desktop's handle
deskhdc = GetDC(deskhwnd) ' get the desktop's device context
' You could put any code that works with the desktop here
retval = ReleaseDC(deskhwnd, deskhdc) ' free up resources associated with the device contextSee Also: CreateDC, ReleaseDC
Category: Devices
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