private void OnSourceInitialized(object sender, EventArgs eventArgs)
{
if (!NativeMethods.DwmIsCompositionEnabled())
{
return;
}
var hwnd = new WindowInteropHelper(this).Handle;
var hwndSource = HwndSource.FromHwnd(hwnd);
var sizeFactor = hwndSource.CompositionTarget.TransformToDevice.Transform(new Vector(1.0, 1.0));
Background = System.Windows.Media.Brushes.Transparent;
hwndSource.CompositionTarget.BackgroundColor = Colors.Transparent;
using (var path = new GraphicsPath())
{
path.AddEllipse(0, 0, (int)(ActualWidth * sizeFactor.X), (int)(ActualHeight * sizeFactor.Y));
using (var region = new Region(path))
using (var graphics = Graphics.FromHwnd(hwnd))
{
var hRgn = region.GetHrgn(graphics);
var blur = new NativeMethods.DWM_BLURBEHIND
{
dwFlags = NativeMethods.DWM_BB.DWM_BB_ENABLE | NativeMethods.DWM_BB.DWM_BB_BLURREGION | NativeMethods.DWM_BB.DWM_BB_TRANSITIONONMAXIMIZED,
fEnable = true,
hRgnBlur = hRgn,
fTransitionOnMaximized = true
};
NativeMethods.DwmEnableBlurBehindWindow(hwnd, ref blur);
region.ReleaseHrgn(hRgn);
}
}
}
void OnGlass()
{
PresentationSource p = PresentationSource.FromVisual(this);
HwndSource s_hwndSource = p as HwndSource;
if (s_hwndSource != null)
{
s_hwndSource.CompositionTarget.BackgroundColor = Color.FromArgb(0, 0, 0, 0);
handle = s_hwndSource.Handle;
}
NativeMethods.RECT r = new NativeMethods.RECT();
UnsafeNativeMethods.GetClientRect(handle, ref r);
IntPtr hrgn = UnsafeNativeMethods.CreateRectRgn(0, 0, 1, 1);
NativeMethods.DWM_BLURBEHIND bb = new NativeMethods.DWM_BLURBEHIND();
bb.dwFlags = NativeMethods.DWM_BB_ENABLE | NativeMethods.DWM_BB_BLURREGION;
bb.fEnable = true;
bb.hRgnBlur = hrgn;
UnsafeNativeMethods.DwmEnableBlurBehindWindow(handle, ref bb);
NativeMethods.MARGINS mar = new NativeMethods.MARGINS();
mar.cyTopHeight = 37;
UnsafeNativeMethods.DwmExtendFrameIntoClientArea(handle, ref mar);
//Need to make the Window size dirty.
this.WindowState = WindowState.Minimized;
this.WindowState = WindowState.Normal;
}
private void SetHrgn()
{
var hwnd = new WindowInteropHelper(this).Handle;
var hwndSource = HwndSource.FromHwnd(hwnd);
var sizeFactor = hwndSource.CompositionTarget.TransformToDevice.Transform(new Vector(1.0, 1.0));
var dwmIsCompositionEnabled = NativeMethods.DwmIsCompositionEnabled();
Background = Brushes.Transparent;
hwndSource.CompositionTarget.BackgroundColor = Colors.Transparent;
var blur = new NativeMethods.DWM_BLURBEHIND();
blur.dwFlags = NativeMethods.DWM_BB.DWM_BB_ENABLE | NativeMethods.DWM_BB.DWM_BB_BLURREGION;
blur.fEnable = true;
var path = new GraphicsPath();
path.AddEllipse(0, 0, (int)(ActualWidth * sizeFactor.X), (int)(ActualHeight * sizeFactor.Y));
var region = new Region(path);
//NativeMethods.DwmEnableBlurBehindWindow(hwnd, ref blur);
/*using (var path = new GraphicsPath())
* {
* path.AddEllipse(0, 0, (int)(ActualWidth * sizeFactor.X), (int)(ActualHeight * sizeFactor.Y));
*
* using (var region = new Region(path))
* using (var graphics = Graphics.FromHwnd(hwnd))
* {
* var hRgn = region.GetHrgn(graphics);
*
* User32.SetWindowRgn(hwnd, hRgn, true);
*
* var blur = new NativeMethods.DWM_BLURBEHIND
* {
* dwFlags = NativeMethods.DWM_BB.DWM_BB_ENABLE | NativeMethods.DWM_BB.DWM_BB_BLURREGION | NativeMethods.DWM_BB.DWM_BB_TRANSITIONONMAXIMIZED,
* fEnable = true,
* hRgnBlur = hRgn,
* fTransitionOnMaximized = true
* };
*
* NativeMethods.DwmEnableBlurBehindWindow(hwnd, ref blur);
*
*
* region.ReleaseHrgn(hRgn);
* }
* }*/
}
private static void DeinitializeGlass(IntPtr hwnd)
{
// fill the background with glass
var margins = new NativeMethods.MARGINS();
margins.cxLeftWidth = margins.cxRightWidth = margins.cyBottomHeight = margins.cyTopHeight = -1;
NativeMethods.DwmExtendFrameIntoClientArea(hwnd, ref margins);
// initialize blur for the window
var bbh = new NativeMethods.DWM_BLURBEHIND
{
fEnable = false,
dwFlags = NativeMethods.DWM_BB.DWM_BB_ENABLE
};
NativeMethods.DwmEnableBlurBehindWindow(hwnd, ref bbh);
}
/// <summary>
/// Enable or disable the blur effect on the form.
/// </summary>
private void ResetDwmBlurBehind(bool enable, Graphics graphics)
{
try
{
NativeMethods.DWM_BLURBEHIND bbh = new NativeMethods.DWM_BLURBEHIND();
if (enable)
{
bbh.dwFlags = NativeMethods.DWM_BLURBEHIND.DWM_BB_ENABLE;
bbh.fEnable = true;
if (this.BlurRegion != null)
{
bbh.hRegionBlur = this.BlurRegion.GetHrgn(graphics);
}
else
{
// Apply the blur glass effect to the entire window.
bbh.hRegionBlur = IntPtr.Zero;
}
}
else
{
bbh.dwFlags = NativeMethods.DWM_BLURBEHIND.DWM_BB_ENABLE |
NativeMethods.DWM_BLURBEHIND.DWM_BB_BLURREGION;
// Turn off the glass effect.
bbh.fEnable = false;
// Apply the blur glass effect to the entire window.
bbh.hRegionBlur = IntPtr.Zero;
}
NativeMethods.DwmEnableBlurBehindWindow(this.Handle, bbh);
}
catch (System.Exception ex)
{
MessageShow.ShowException(this, ex);
}
}
