Press Ctrl-Alt-Delete and then Alt-T to open Task Manager's Applications tab. Press the down arrow, and then Shift-down arrow to select all the programs listed in the window. When they're all selected, press Alt-E, then Alt-F, and finally x to close Task Manager.
In order to disable multiple instances of an app on Windows 10, you need to install a free app called SingleInstance. Go ahead and download, and run the app. The app, by default, has one app pre-configured and that's the Calculator app on Windows 10.
I have the following function:
private void TakeOverAllScreens()
{
int i = 0;
foreach (Screen s in Screen.AllScreens)
{
if (s != Screen.PrimaryScreen)
{
i++;
Process.Start(Application.ExecutablePath, "Screen|" + s.Bounds.X + "|" + s.Bounds.Y + "|" + i);
}
}
}
As you can see it creates a separate instance of my application for each screen on the pc.
How can I create an exit function that closes all of them? The function needs to work on any instance of the app, not just my "Main" instance.
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