CWnd::GetCapture
Retrieves the window that has the mouse capture.
static CWnd* PASCAL GetCapture( );
Return Value
Identifies the window that has the mouse capture. It is NULL if no window has the mouse capture.
The return value may be temporary and should not be stored for later use.
Remarks
Only one window has the mouse capture at any given time. A window receives the mouse capture when the SetCapture member function is called. This window receives mouse input whether or not the cursor is within its borders.
Requirements
Header: afxwin.h