/// <summary>
/// Resets the AeroGlass exclusion area.
/// </summary>
protected void ResetAeroGlass()
{
var margins = new Margins(true);
try
{
DesktopWindowManagerNativeMethods.DwmExtendFrameIntoClientArea(WindowHandle, ref margins);
}
catch (DllNotFoundException) { }
}
private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
switch (msg)
{
case DwmMessages.WmDwmCompositionChanged:
case DwmMessages.WmDwmNcRenderingChanged:
AeroGlassCompositionChanged.Invoke(this, new AeroGlassCompositionChangedEventArgs(AeroGlassCompositionEnabled));
handled = true;
break;
case DwmMessages.WmNcCalcSize:
handled = DrawOnTitleBar;
break;
case DwmMessages.WmNcHitTest:
if (!(handled = DrawOnTitleBar))
{
break;
}
var result = IntPtr.Zero;
handled = DesktopWindowManagerNativeMethods.DwmDefWindowProc(hwnd, msg, wParam, lParam, ref result) != 0;
if (handled)
{
return(result);
}
if (WindowState == WindowState.Maximized)
{
return(new IntPtr(1)); // no necessary to change the size when maximized
}
var mouse = new Point(lParam.ToInt32() & 0xFFFF, lParam.ToInt32() >> 16);
const int border = 6;
double right = Left + ActualWidth, bottom = Top + ActualHeight;
return(new IntPtr(
mouse.X - Left <= border
? mouse.Y - Top <= border ? 13 : bottom - mouse.Y <= border ? 16 : 10 // top bottom left
: right - mouse.X <= border
? mouse.Y - Top <= border ? 14 : bottom - mouse.Y <= border ? 17 : 11 // top bottom right
: mouse.Y - Top <= border ? 12 : bottom - mouse.Y <= border ? 15 : 1)); // top bottom normal
default:
handled = false;
break;
}
return(IntPtr.Zero);
}