ValidateRgn function user32
The ValidateRgn function validates the client area within a region by removing the region from the current update region of the specified window.
BOOL ValidateRgn(
HWND hWnd,
HRGN hRgn
);
Implementation
int ValidateRgn(int hWnd, int hRgn) => _ValidateRgn(hWnd, hRgn);