internal void setScreenPosition()
{
// set our position if running as shell, otherwise let AppBar do the work
if (Shell.IsCairoRunningAsShell || !enableAppBar)
{
delaySetPosition();
}
else if (enableAppBar)
{
AppBarHelper.ABSetPos(this, ActualWidth * dpiScale, desiredHeight * dpiScale, appBarEdge);
}
}
private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (msg == appbarMessageId && appbarMessageId != -1)
{
switch ((NativeMethods.AppBarNotifications)wParam.ToInt32())
{
case NativeMethods.AppBarNotifications.PosChanged:
AppBarHelper.ABSetPos(this, ActualWidth * dpiScale, desiredHeight * dpiScale, appBarEdge);
break;
case NativeMethods.AppBarNotifications.WindowArrange:
if ((int)lParam != 0) // before
{
Visibility = Visibility.Collapsed;
}
else // after
{
Visibility = Visibility.Visible;
}
break;
case NativeMethods.AppBarNotifications.FullScreenApp:
AppBarHelper.SetWinTaskbarVisibility((int)NativeMethods.SetWindowPosFlags.SWP_HIDEWINDOW);
break;
}
handled = true;
}
else if (msg == (int)NativeMethods.WM.ACTIVATE && enableAppBar && !Shell.IsCairoRunningAsShell && !Startup.IsShuttingDown)
{
AppBarHelper.AppBarActivate(hwnd);
}
else if (msg == (int)NativeMethods.WM.WINDOWPOSCHANGING)
{
// Extract the WINDOWPOS structure corresponding to this message
NativeMethods.WINDOWPOS wndPos = NativeMethods.WINDOWPOS.FromMessage(lParam);
// Determine if the z-order is changing (absence of SWP_NOZORDER flag)
// If we are intentionally trying to become topmost, make it so
if (isRaising && (wndPos.flags & NativeMethods.SetWindowPosFlags.SWP_NOZORDER) == 0)
{
// Sometimes Windows thinks we shouldn't go topmost, so poke here to make it happen.
wndPos.hwndInsertAfter = (IntPtr)NativeMethods.WindowZOrder.HWND_TOPMOST;
wndPos.UpdateMessage(lParam);
}
}
else if (msg == (int)NativeMethods.WM.WINDOWPOSCHANGED && enableAppBar && !Shell.IsCairoRunningAsShell && !Startup.IsShuttingDown)
{
AppBarHelper.AppBarWindowPosChanged(hwnd);
}
else if (msg == (int)NativeMethods.WM.DPICHANGED)
{
if (Screen.Primary)
{
Shell.DpiScale = (wParam.ToInt32() & 0xFFFF) / 96d;
}
dpiScale = (wParam.ToInt32() & 0xFFFF) / 96d;
setScreenProperties(ScreenSetupReason.DpiChange);
}
else if (msg == (int)NativeMethods.WM.DISPLAYCHANGE)
{
setScreenProperties(ScreenSetupReason.DisplayChange);
handled = true;
}
else if (msg == (int)NativeMethods.WM.DEVICECHANGE && (int)wParam == 0x0007)
{
setScreenProperties(ScreenSetupReason.DeviceChange);
handled = true;
}
// call custom implementations' window procedure
return(customWndProc(hwnd, msg, wParam, lParam, ref handled));
}
