public static extern BOOL EndPaint(
HWND hWnd,
ref PAINTSTRUCT lpPaint
);
public static extern bool EndPaint(IntPtr hWnd, ref PAINTSTRUCT ps);
public static extern HDC BeginPaint(
HWND hWnd,
ref PAINTSTRUCT lpPaint
);
public static extern IntPtr BeginPaint(IntPtr hWnd, ref PAINTSTRUCT ps);