public static extern int FillRect(IntPtr hDC, ref RECT rect, IntPtr hBrush);
static public extern int ScrollWindowEx(IntPtr hWnd, int dx, int dy, ref RECT rcScroll, ref RECT rcClip, IntPtr UpdateRegion, ref RECT rcInvalidated, uint flags);
public static extern bool GetWindowRect(IntPtr hWnd, ref RECT rect);
public extern static int GetClientRect(IntPtr hWnd, ref RECT rc);
public extern static int DrawText(IntPtr hdc, string lpString, int nCount, ref RECT lpRect, int uFormat);
public static extern void SendMessage(IntPtr hWnd, int msg, int wParam, ref RECT lParam);
static public extern bool GetMenuItemRect(IntPtr hWnd, IntPtr hMenu, uint Item, ref RECT rc);