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The easiest way of preventing focus stealing is to use Tweak UI which has a setting that is called “Prevent applications from stealing focus”. If you want to keep a certain window always on top, you can install TurboTop. Another solution to prevents apps from stealing the focus is to simply install a program that can block such a behavior. Select the program that’s stealing the focus.

Reinstall the software program that's to blame. Free programs like CCleaner also provide easy ways to disable programs that start automatically with Windows. If the focus stealing program is a background process, you can disable the process in Services, located in Administrative Tools in all versions of Windows. The system automatically enables calls to SetForegroundWindow if the user presses the ALT key or takes some action that causes the system itself to change the foreground window (for example, clicking a background window). The foreground process can disable calls to SetForegroundWindow by calling the LockSetForegroundWindow function. The window must be attached to the calling thread's message queue. The system assigns a slightly higher priority to the thread that creates the foreground window than it does to other threads.Īctivates a window. Retrieves a handle to the foreground window (the window with which the user is currently working). Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature. This is likely because the managed PInvoke signature does not match the unmanaged target signature. I receive: A call to PInvoke function 'Project1!Project1.Form1::SetForegroundWindow' has unbalanced the stack. Notes: SetForegroundWindow Win32-API not always works on Windows-7 (vista and above). VB 6 Signature: Private Declare Function SetForegroundWindow Lib "user32" (ByVal hwnd As IntPtr) As Long. Private Shared Function SetForegroundWindow(ByVal hWnd As IntPtr) As Boolean End Function. For more information, see Remarks later in this topic.

The calling process must already be able to set the foreground window. Enables the specified process to set the foreground window using the SetForegroundWindow function.