private static extern bool _GetWindowRect(IntPtr hWnd, out RECT lpRect);
private static extern bool _AdjustWindowRectEx(ref RECT lpRect, WS dwStyle, [MarshalAs(UnmanagedType.Bool)] bool bMenu, WS_EX dwExStyle);
public static RECT AdjustWindowRectEx(RECT lpRect, WS dwStyle, bool bMenu, WS_EX dwExStyle)
{
// Native version modifies the parameter in place.
if (!_AdjustWindowRectEx(ref lpRect, dwStyle, bMenu, dwExStyle))
{
HRESULT.ThrowLastError();
}
return lpRect;
}
public static IntPtr CreateRectRgnIndirect(RECT lprc)
{
IntPtr ret = _CreateRectRgnIndirect(ref lprc);
if (IntPtr.Zero == ret)
{
throw new Win32Exception();
}
return ret;
}
public static RECT Union(RECT rect1, RECT rect2)
{
return new RECT
{
Left = Math.Min(rect1.Left, rect2.Left),
Top = Math.Min(rect1.Top, rect2.Top),
Right = Math.Max(rect1.Right, rect2.Right),
Bottom = Math.Max(rect1.Bottom, rect2.Bottom),
};
}