private static void RedrawWindowsSystemTrayArea()
{
try
{
// Windows XP and earlier
var hNotificationArea = Native.FindWindowEx
(
Native.FW(Native.FW(Native.FW(IntPtr.Zero, "Shell_TrayWnd"), "TrayNotifyWnd"), "SysPager"),
IntPtr.Zero,
"ToolbarWindow32",
"Notification Area"
);
// Windows Vista and later
if (hNotificationArea == IntPtr.Zero || hNotificationArea.ToInt32() == Native.INVALID_HANDLE_VALUE)
{
hNotificationArea = Native.FindWindowEx
(
Native.FW(Native.FW(Native.FW(IntPtr.Zero, "Shell_TrayWnd"), "TrayNotifyWnd"), "SysPager"),
IntPtr.Zero,
"ToolbarWindow32",
"User Promoted Notification Area"
);
}
if (hNotificationArea == IntPtr.Zero || hNotificationArea.ToInt32() == Native.INVALID_HANDLE_VALUE)
{
return;
}
// Get the notification bounds
var rect = new Native.Rect();
Native.GetClientRect(hNotificationArea, ref rect);
// Wiggle the mouse over the notification area
// Note: this doesn't actually move the mouse cursor on the screen -- this just sends a message to the system tray window
// that mouse movement occurred over it, forcing it to refresh. Sending messages asking for a repaint or invalidated
// area don't work, but this does.
for (uint x = 0; x < rect.Right; x += 5)
{
for (uint y = 0; y < rect.Bottom; y += 5)
{
Native.SendMessage(hNotificationArea, Native.WM_MOUSEMOVE, 0, (y << 16) | x);
}
}
}
catch
{
// ignored
}
}
public static void ToggleWindowsTaskbarVisibility(Boolstate forced = Boolstate.Indeterminate)
{
try
{
var hTaskBar = Native.FindWindow("Shell_TrayWnd", null);
if (hTaskBar.ToInt32() == Native.INVALID_HANDLE_VALUE || hTaskBar == IntPtr.Zero)
{
return;
}
var TaskBarIsCurrentlyVisible = Native.IsWindowVisible(hTaskBar);
var wantToMakeWindowsTaskbarVisible = forced == Boolstate.True
? true
: forced == Boolstate.False
? false
: !TaskBarIsCurrentlyVisible;
// For forced modes, if the taskbar is already visible and we're requesting to show it, then do nothing
if (wantToMakeWindowsTaskbarVisible && TaskBarIsCurrentlyVisible)
{
return;
}
// For forced modes, if the taskbar is already hidden and we're requesting to hide it, then do nothing
if (!wantToMakeWindowsTaskbarVisible && !TaskBarIsCurrentlyVisible)
{
return;
}
// If we're hiding the taskbar, let's take some notes on the original screen desktop work areas
if (!wantToMakeWindowsTaskbarVisible)
{
foreach (var screen in Screen.AllScreens)
{
var osi = new OriginalScreenInfo();
osi.Screen = screen;
osi.Workarea = new Native.Rect();
osi.Workarea.Left = screen.WorkingArea.Left;
osi.Workarea.Top = screen.WorkingArea.Top;
osi.Workarea.Right = screen.WorkingArea.Right;
osi.Workarea.Bottom = screen.WorkingArea.Bottom;
OriginalScreens.Add(osi);
}
}
// Show or hide the Windows taskbar
Native.ShowWindow(hTaskBar,
wantToMakeWindowsTaskbarVisible ? WindowShowStyle.ShowNoActivate : WindowShowStyle.Hide);
// Keep track of the taskbar state so we don't let the user accidentally close Borderless Gaming
WindowsTaskbarIsHidden = !wantToMakeWindowsTaskbarVisible;
if (wantToMakeWindowsTaskbarVisible)
{
// If we're showing the taskbar, let's restore the original screen desktop work areas...
foreach (var osi in OriginalScreens)
{
Native.SystemParametersInfo(SPI.SPI_SETWORKAREA, 0, ref osi.Workarea, SPIF.SPIF_SENDCHANGE);
}
// ...and then forget them (we don't need them anymore)
OriginalScreens.Clear();
// And we need to redraw the system tray in case tray icons from other applications did something while the
// taskbar was hidden. Simulating mouse movement over the system tray seems to be the best way to get this
// done.
RedrawWindowsSystemTrayArea();
}
else
{
// If we're hiding the taskbar, let's set the screen desktop work area over the entire screen so that
// maximizing windows works as expected.
foreach (var osi in OriginalScreens)
{
var rect = new Native.Rect();
rect.Left = osi.Screen.Bounds.Left;
rect.Top = osi.Screen.Bounds.Top;
rect.Right = osi.Screen.Bounds.Right;
rect.Bottom = osi.Screen.Bounds.Bottom;
Native.SystemParametersInfo(SPI.SPI_SETWORKAREA, 0, ref rect, SPIF.SPIF_SENDCHANGE);
// Note: WinAPI SystemParametersInfo() will automatically determine which screen by the rectangle we pass in.
// (it's not possible to specify which screen we're referring to directly)
}
}
}
catch
{
}
}
