/// <summary>
/// Get rectangle of a specified window.
/// </summary>
/// <param name="source">Source Window</param>
internal static Rect GetWindowRect(Window source)
{
var handleWindow = new WindowInteropHelper(source).Handle;
try
{
NativeMethod.RECT targetRect;
// For Windows XP or older
var result = NativeMethod.GetWindowRect(
handleWindow,
out targetRect);
if (!result)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
if (OsVersion.IsVistaOrNewer)
{
// For Windows Vista or newer
bool isEnabled = false;
var result1 = NativeMethod.DwmIsCompositionEnabled(
ref isEnabled);
if (result1 != 0) // 0 means S_OK.
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
if (isEnabled)
{
var result2 = NativeMethod.DwmGetWindowAttribute(
handleWindow,
NativeMethod.DWMWA_EXTENDED_FRAME_BOUNDS,
ref targetRect,
Marshal.SizeOf(typeof(NativeMethod.RECT)));
if (result2 != 0) // 0 means S_OK.
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
}
return(targetRect.ToRect());
}
catch (Win32Exception ex)
{
throw new Exception(String.Format("Failed to get window rect (Code: {0}).", ex.ErrorCode), ex);
}
}
