public static extern int DrawThemeParentBackground(IntPtr hWnd, IntPtr hDc, ref Win32.RECT pRc);
public extern static int DrawThemeText(IntPtr hTheme, IntPtr hdc, int iPartId, int iStateId, string text, int textLength, uint textFlags, uint textFlags2, ref Win32.RECT pRect);
public static extern int DrawThemeBackground(IntPtr hTheme, IntPtr hDc, int iPartId, int iStateId, ref Win32.RECT pRect, IntPtr pClipRect);