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copied!<p>After working through some example code I implemented a background worker that did the trick. For more info <a href="http://msdn.microsoft.com/en-us/library/cc221403%28v=vs.95%29.aspx#Y114" rel="nofollow">From msdn - How to: Use a Background Worker</a>.</p> <p>I'm trying to find a more reliable way to ensure the F11 command is processed by the application, but for now I've put in a Thread.Sleep before the SendKeys.</p> <p>Please feel free to leave comments or questions.</p> <pre><code>[DllImport("user32.dll")] [return: MarshalAs(UnmanagedType.Bool)] static extern bool SetForegroundWindow(IntPtr hWnd); Process p; //Process p is initialized: p = Process.Start(@"<path\application.exe>"); Form2 oForm; private void transition() { BackgroundWorker bw = new BackgroundWorker(); oForm = new Form2(); bw.DoWork += new DoWorkEventHandler(bw_DoWork); bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bw_RunWorkerCompleted); oForm.Show(); if (bw.IsBusy != true) { bw.RunWorkerAsync(); } } private void bw_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { oForm.closethis(); } private void bw_DoWork(object sender, DoWorkEventArgs e) { BackgroundWorker worker = sender as BackgroundWorker; if ((worker.CancellationPending == true)) { e.Cancel = true; } else { SetForegroundWindow(p.MainWindowHandle); p.WaitForInputIdle(3000); System.Threading.Thread.Sleep(500); SendKeys.SendWait("{F11}"); //Sends the application into full screen mode } } </code></pre> <p>And the code for the form that fades in and out..</p> <pre><code>public partial class Form2 : Form { public Form2() { this.Visible = false; this.Opacity = 0; InitializeComponent(); this.TopMost = true; this.Visible = true; while (this.Opacity < 1) { this.Opacity += .05; Thread.Sleep(5); this.TopMost = true; } } private void closefade() { while (this.Opacity > 0) { this.Opacity -= .05; Thread.Sleep(5); this.TopMost = true; } this.Close(); } delegate void CloseBack(); public void closethis() { if (this.InvokeRequired) { CloseBack b = new CloseBack(closethis); } else closefade(); } } </code></pre>

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