The GetViewportExtEx function retrieves the x-extents and y-extents of the current viewport for the specified device context.
BOOL GetViewportExtEx(
HDC hdc, |
// handle of device context |
LPSIZE lpSize |
// address of structure receiving viewport dimensions |
); |
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.