Force to close MessageBox programmatically

Question

Let me give you the background.

We have an Application(medium sized) that is using MessageBox.Show (....) at various places (in hundreds).

These message bo

Answer 1

I think the cleanest way would be to implement you own message box form like

class MyMessageBox : Form {
  private MyMessageBox currentForm; // The currently active message box

  public static Show(....) { // same as MessageBox.Show
    // ...
  }

  public static Show(...) { // define additional overloads
  }

  public static CloseCurrent() {
    if (currentForm != null)
      currentForm.Close();
  }

  // ...
}

In some of my larger projects, I found this approach useful also for other purposes (such as automatic logging of error messages etc.)

The second idea I have would be to use GetTopWindow() (or maybe some other WIN32 function) to get the current top-level window of your application and send a WM_CLOSE message to it.