The GetWindowDC function retrieves the device context (DC) for the entire window, including title bar, menus, and scroll bars. A window device context permits painting anywhere in a window, because the origin of the device context is the upper-left corner of the window instead of the client area.
Declare Function GetWindowDC Lib "user32" Alias "GetWindowDC" (ByVal hwnd As Long) As Long
|Operating Systems Supported|
|Requires Windows NT 3.1 or later; Requires Windows 95 or later|
Identifies the window with a device context that is to be retrieved.
|If the function succeeds, the return value is the handle of a device context for the specified window. |
If the function fails, the return value is NULL, indicating an error or an invalid hWnd parameter.