private SetWindowThemeAttribute ( [ hwnd, [ eAttribute, [ pvAttribute, [ cbAttribute ) : void | ||
hwnd | [ | |
eAttribute | [ | |
pvAttribute | [ | |
cbAttribute | [ | |
return | void |
private static bool _SetWindowThemeAttribute(Window window, bool showCaption, bool showIcon) { bool isGlassEnabled; Assert.IsNotNull(window); Assert.IsTrue(window.CheckAccess()); // This only is expected to work if Aero glass is enabled. try { isGlassEnabled = NativeMethods.DwmIsCompositionEnabled(); } catch (DllNotFoundException) { // Not an error. Just not on Vista so we're not going to get glass. return(false); } IntPtr hwnd = new WindowInteropHelper(window).Handle; if (IntPtr.Zero == hwnd) { throw new InvalidOperationException("Window must be shown before we can modify attributes."); } var options = new WTA_OPTIONS { dwMask = (WTNCA.NODRAWCAPTION | WTNCA.NODRAWICON) }; if (isGlassEnabled) { if (!showCaption) { options.dwFlags |= WTNCA.NODRAWCAPTION; } if (!showIcon) { options.dwFlags |= WTNCA.NODRAWICON; } } NativeMethods.SetWindowThemeAttribute(hwnd, WINDOWTHEMEATTRIBUTETYPE.WTA_NONCLIENT, ref options, WTA_OPTIONS.Size); bool addHook = !_attributedWindows.ContainsKey(hwnd); if (addHook) { HwndSourceHook hook = delegate(IntPtr unusedHwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled) { if (WM.DWMCOMPOSITIONCHANGED == (WM)msg) { _SetWindowThemeAttribute(window, showCaption, showIcon); handled = false; } return(IntPtr.Zero); }; _attributedWindows.Add(hwnd, hook); HwndSource.FromHwnd(hwnd).AddHook(hook); window.Closing += _OnAttributedWindowClosing; } return(isGlassEnabled); }