Lead the form to the beginning and lose focus

// Call API functions
Using System. Runtime. InteropServices;

 

       // Initial position of the form layer
       Public const int HWND_TOPMOST =-1;

 

Declaration method in program form

      // API functions
       [DllImport ("user32", EntryPoint = "SetWindowPos")]
       // Position of the static window
       Public static extern bool SetWindowPos (int hwnd, int hWndInsertAfter, int x, int y, int cx, int cy, uint wFlags );

 

Add the timer control and write the position of the form in the tick event.

           // Preserve the window position after timer is started.
           SetWindowPos (this. Handle. ToInt32 (), HWND_TOPMOST, 420,300,300,300, 1 );

 

Start timer in form load

           // Start the timer control
           Timer1.Start ();