Open Win32 App in C#, with extern keyword

Process _winMergeProc = Process.Start("WinMerge", args);

BringProcessToFront(_winMergeProc);

        

----

const int SW_RESTORE = 9;

        private static void BringProcessToFront(Process process)

        {
            var hWnd = process.MainWindowHandle;
            if (IsIconic(hWnd))
                ShowWindow(hWnd, SW_RESTORE);
            SetForegroundWindow(hWnd);
        }


        [DllImport("User32.dll")]
        private static extern bool SetForegroundWindow(IntPtr handle);
        [DllImport("User32.dll")]
        private static extern bool ShowWindow(IntPtr handle, int nCmdShow);
        [DllImport("User32.dll")]
        private static extern bool IsIconic(IntPtr handle);