/// <summary>
/// Excludes the specified child control from the glass effect.
/// </summary>
/// <param name="parent">The parent control.</param>
/// <param name="control">The control to exclude.</param>
/// <exception cref="ArgumentNullException">Occurs if control is null.</exception>
/// <exception cref="ArgumentException">Occurs if control is not a child control.</exception>
public static void ExcludeChildFromGlass(this Control parent, Control control)
{
if (parent == null)
{
throw new ArgumentNullException(nameof(parent));
}
if (control == null)
{
throw new ArgumentNullException(nameof(control));
}
if (!parent.Contains(control))
{
throw new ArgumentException("Control must be a child control.");
}
if (IsCompositionEnabled())
{
System.Drawing.Rectangle clientScreen = parent.RectangleToScreen(parent.ClientRectangle);
System.Drawing.Rectangle controlScreen = control.RectangleToScreen(control.ClientRectangle);
NativeMethods.Margins margins = new NativeMethods.Margins(controlScreen.Left - clientScreen.Left, controlScreen.Top - clientScreen.Top,
clientScreen.Right - controlScreen.Right, clientScreen.Bottom - controlScreen.Bottom);
// Extend the Frame into client area
NativeMethods.DwmExtendFrameIntoClientArea(parent.Handle, ref margins);
}
}
public void Set(IntPtr window, bool enabled)
{
if (!NativeMethods.DwmIsCompositionEnabled())
{
return;
}
if (enabled)
{
HwndSource.FromHwnd(window)?.AddHook(WndProc);
}
else
{
HwndSource.FromHwnd(window)?.RemoveHook(WndProc);
}
var margins = new NativeMethods.Margins {
Left = -1, Right = -1, Bottom = -1, Top = -1
};
var blurBehind = new NativeMethods.DwmBlurBehind {
Enable = enabled, Flags = NativeMethods.DwmFlags.BlurBackground
};
NativeMethods.DwmExtendFrameIntoClientArea(window, ref margins);
NativeMethods.DwmEnableBlurBehindWindow(window, ref blurBehind);
}
/// <summary>
/// Extends the window frame beyond the client area.
/// </summary>
/// <param name="window">The window.</param>
/// <param name="padding">The padding to use as the area into which the frame is extended.</param>
public static void ExtendFrameIntoClientArea(this IWin32Window window, Padding padding)
{
if (window == null)
{
throw new ArgumentNullException(nameof(window));
}
NativeMethods.Margins m = new NativeMethods.Margins(padding);
NativeMethods.DwmExtendFrameIntoClientArea(window.Handle, ref m);
}
/// <summary>
/// Extends the window frame beyond the client area.
/// </summary>
/// <param name="window">The window.</param>
/// <param name="padding">The padding to use as the area into which the frame is extended.</param>
public static void ExtendFrameIntoClientArea(this IWin32Window window, Padding padding)
{
NativeMethods.Margins m = new NativeMethods.Margins(padding);
NativeMethods.DwmExtendFrameIntoClientArea(window.Handle, ref m);
}
