using System; using System.Windows.Forms; using System.Drawing; using MS.WindowsAPICodePack.Internal; namespace Microsoft.WindowsAPICodePack.Shell { /// <summary> /// Windows Glass Form /// Inherit from this form to be able to enable glass on Windows Form /// </summary> public class GlassForm : Form { #region properties /// <summary> /// Get determines if AeroGlass is enabled on the desktop. Set enables/disables AreoGlass on the desktop. /// </summary> public bool AeroGlassCompositionEnabled { set { DesktopWindowManagerNativeMethods.DwmEnableComposition( value ? CompositionEnable.DWM_EC_ENABLECOMPOSITION : CompositionEnable.DWM_EC_DISABLECOMPOSITION ); } get { return DesktopWindowManagerNativeMethods.DwmIsCompositionEnabled( ); } } #endregion #region events /// <summary> /// Fires when the availability of Glass effect changes. /// </summary> public event AeroGlassCompositionChangedEvent AeroGlassCompositionChanged; #endregion #region operations /// <summary> /// Makes the background of current window transparent /// </summary> public void SetAeroGlassTransparency( ) { this.BackColor = Color.Transparent; } /// <summary> /// Excludes a Control from the AeroGlass frame. /// </summary> /// <param name="control">The control to exclude.</param> /// <remarks>Many non-WPF rendered controls (i.e., the ExplorerBrowser control) will not /// render properly on top of an AeroGlass frame. </remarks> public void ExcludeControlFromAeroGlass( Control control ) { if( AeroGlassCompositionEnabled ) { Rectangle clientScreen = this.RectangleToScreen( this.ClientRectangle ); Rectangle controlScreen = control.RectangleToScreen( control.ClientRectangle ); MARGINS margins = new MARGINS( ); margins.cxLeftWidth = controlScreen.Left - clientScreen.Left; margins.cxRightWidth = clientScreen.Right - controlScreen.Right; margins.cyTopHeight = controlScreen.Top - clientScreen.Top; margins.cyBottomHeight = clientScreen.Bottom - controlScreen.Bottom; // Extend the Frame into client area DesktopWindowManagerNativeMethods.DwmExtendFrameIntoClientArea( Handle, ref margins ); } } /// <summary> /// Resets the AeroGlass exclusion area. /// </summary> public void ResetAreoGlass( ) { if( this.Handle != IntPtr.Zero ) { MARGINS margins = new MARGINS( true ); DesktopWindowManagerNativeMethods.DwmExtendFrameIntoClientArea( this.Handle, ref margins ); } } #endregion #region implementation /// <summary> /// Catches the DWM messages to this window and fires the appropriate event. /// </summary> /// <param name="m"></param> protected override void WndProc( ref Message m ) { if( m.Msg == DWMMessages.WM_DWMCOMPOSITIONCHANGED || m.Msg == DWMMessages.WM_DWMNCRENDERINGCHANGED ) { if( AeroGlassCompositionChanged != null ) { AeroGlassCompositionChanged.Invoke( this, new AeroGlassCompositionChangedEvenArgs( AeroGlassCompositionEnabled ) ); } } base.WndProc( ref m ); } /// <summary> /// Initializes the Form for AeroGlass /// </summary> /// <param name="e">The arguments for this event</param> protected override void OnLoad( EventArgs e ) { base.OnLoad( e ); ResetAreoGlass( ); } /// <summary> /// Overide OnPaint to paint the background as black. /// </summary> /// <param name="e">PaintEventArgs</param> protected override void OnPaint( PaintEventArgs e ) { base.OnPaint( e ); if( DesignMode == false ) { if( AeroGlassCompositionEnabled ) { // Paint the all the regions black to enable glass e.Graphics.FillRectangle( Brushes.Black, this.ClientRectangle ); } } } #endregion } }
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