/// <summary>
/// Private constructor. The public way to access this class is through the static Current property.
/// </summary>
private SystemParameters2()
{
// This window gets used for calculations about standard caption button locations
// so it has WS_OVERLAPPEDWINDOW as a style to give it normal caption buttons.
// This window may be shown during calculations of caption bar information, so create it at a location that's likely offscreen.
_messageHwnd = new MessageWindow(0, WS.OVERLAPPEDWINDOW | WS.DISABLED, 0, new Rect(-16000, -16000, 100, 100),
"", _WndProc);
_messageHwnd.Dispatcher.ShutdownStarted += (sender, e) => Utility.SafeDispose(ref _messageHwnd);
// Fixup the default values of the DPs.
_InitializeIsGlassEnabled();
_InitializeGlassColor();
_InitializeCaptionHeight();
_InitializeWindowNonClientFrameThickness();
_InitializeWindowResizeBorderThickness();
_InitializeCaptionButtonLocation();
_InitializeSmallIconSize();
_InitializeHighContrast();
_InitializeThemeInfo();
// WindowCornerRadius isn't exposed by true system parameters, so it requires the theme to be initialized first.
_InitializeWindowCornerRadius();
_UpdateTable = new Dictionary<WM, List<_SystemMetricUpdate>>
{
{
WM.THEMECHANGED,
new List<_SystemMetricUpdate>
{
_UpdateThemeInfo,
_UpdateHighContrast,
_UpdateWindowCornerRadius,
_UpdateCaptionButtonLocation
}
},
{
WM.SETTINGCHANGE,
new List<_SystemMetricUpdate>
{
_UpdateCaptionHeight,
_UpdateWindowResizeBorderThickness,
_UpdateSmallIconSize,
_UpdateHighContrast,
_UpdateWindowNonClientFrameThickness,
_UpdateCaptionButtonLocation
}
},
{WM.DWMNCRENDERINGCHANGED, new List<_SystemMetricUpdate> {_UpdateIsGlassEnabled}},
{WM.DWMCOMPOSITIONCHANGED, new List<_SystemMetricUpdate> {_UpdateIsGlassEnabled}},
{WM.DWMCOLORIZATIONCOLORCHANGED, new List<_SystemMetricUpdate> {_UpdateGlassColor}}
};
}
private SystemParameters2()
{
EventHandler handler = null;
this._messageHwnd = new Standard.MessageWindow(0, Standard.WS.BORDER | Standard.WS.DISABLED | Standard.WS.DLGFRAME | Standard.WS.GROUP | Standard.WS.MAXIMIZEBOX | Standard.WS.SIZEBOX | Standard.WS.SYSMENU, Standard.WS_EX.LEFT, new Rect(-16000.0, -16000.0, 100.0, 100.0), "", new Standard.WndProc(this._WndProc));
if (handler == null)
{
handler = (sender, e) => Standard.Utility.SafeDispose <Standard.MessageWindow>(ref this._messageHwnd);
}
this._messageHwnd.Dispatcher.ShutdownStarted += handler;
this._InitializeIsGlassEnabled();
this._InitializeGlassColor();
this._InitializeCaptionHeight();
this._InitializeWindowNonClientFrameThickness();
this._InitializeWindowResizeBorderThickness();
this._InitializeCaptionButtonLocation();
this._InitializeSmallIconSize();
this._InitializeHighContrast();
this._InitializeThemeInfo();
this._InitializeWindowCornerRadius();
Dictionary <Standard.WM, List <_SystemMetricUpdate> > dictionary = new Dictionary <Standard.WM, List <_SystemMetricUpdate> >();
dictionary.Add(Standard.WM.THEMECHANGED, new List <_SystemMetricUpdate> {
new _SystemMetricUpdate(this._UpdateThemeInfo), new _SystemMetricUpdate(this._UpdateHighContrast), new _SystemMetricUpdate(this._UpdateWindowCornerRadius), new _SystemMetricUpdate(this._UpdateCaptionButtonLocation)
});
dictionary.Add(Standard.WM.WININICHANGE, new List <_SystemMetricUpdate> {
new _SystemMetricUpdate(this._UpdateCaptionHeight), new _SystemMetricUpdate(this._UpdateWindowResizeBorderThickness), new _SystemMetricUpdate(this._UpdateSmallIconSize), new _SystemMetricUpdate(this._UpdateHighContrast), new _SystemMetricUpdate(this._UpdateWindowNonClientFrameThickness), new _SystemMetricUpdate(this._UpdateCaptionButtonLocation)
});
dictionary.Add(Standard.WM.DWMNCRENDERINGCHANGED, new List <_SystemMetricUpdate> {
new _SystemMetricUpdate(this._UpdateIsGlassEnabled)
});
dictionary.Add(Standard.WM.DWMCOMPOSITIONCHANGED, new List <_SystemMetricUpdate> {
new _SystemMetricUpdate(this._UpdateIsGlassEnabled)
});
dictionary.Add(Standard.WM.DWMCOLORIZATIONCOLORCHANGED, new List <_SystemMetricUpdate> {
new _SystemMetricUpdate(this._UpdateGlassColor)
});
this._UpdateTable = dictionary;
}
private void _Dispose(bool disposing, bool isHwndBeingDestroyed)
{
if (this._isDisposed)
{
return;
}
this._isDisposed = true;
IntPtr hwnd = this.Handle;
string className = this._className;
if (isHwndBeingDestroyed)
{
base.Dispatcher.BeginInvoke(DispatcherPriority.Normal, new DispatcherOperationCallback((object arg) => MessageWindow._DestroyWindow(IntPtr.Zero, className)));
}
else if (this.Handle != IntPtr.Zero)
{
if (base.CheckAccess())
{
MessageWindow._DestroyWindow(hwnd, className);
}
else
{
base.Dispatcher.BeginInvoke(DispatcherPriority.Normal, new DispatcherOperationCallback((object arg) => MessageWindow._DestroyWindow(hwnd, className)));
}
}
MessageWindow.s_windowLookup.Remove(hwnd);
this._className = null;
this.Handle = IntPtr.Zero;
}
