How to prevent Alt+F4

  • Thread starter Thread starter 007
  • Start date Start date
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007

I have a FixedToolWindow form that I create and display when the user
presses a button on the toolbar. I want to prevent Alt+F4 on the
FixedToolWindow form. How do I accomplish this? I want the only way to close
the FixedToolWindow form is by clicking on the toolbar button again.

It's a bit like pressing "Search" on IE's toolbar.

BTW why is the ToolBar that comes with VS.NET so ugly? It's like the old
style toolbar.

Thanks.
 
Look at the Form.Closing event.
You can set
e.Cancel = true;
but be careful with your logic, so that you don't make it so that you cannot
close your form at all.

// Sample on how this can be done. Note that this will also prevent use of
the X button for exit.
// Only the Close button will allow this form to close.

private bool keepOpen = true;
private void ToolForm_Closing(object sender,
System.ComponentModel.CancelEventArgs e)
{
e.Cancel = keepOpen;
}

private void buttonClose_Click(object sender, System.EventArgs e)
{
keepOpen = false;
this.Close();
}

Chris R.
 
007 said:
I have a FixedToolWindow form that I create and display when the user
presses a button on the toolbar. I want to prevent Alt+F4 on the
FixedToolWindow form. How do I accomplish this? I want the only way to close
the FixedToolWindow form is by clicking on the toolbar button again.
Click to expand...

Asking how to lock the user out from the "panic keystroke" of Alt-F4 is like
asking how to write a trojan horse. Don't do it. If you want the closure to
be handled, handle the "Closing" and/or "Closed" events on the form.
BTW why is the ToolBar that comes with VS.NET so ugly? It's like the old
style toolbar.
Click to expand...

Use a manifest file to enable the Win98 look and feel for the taskbar,
buttons, and scrollbars.

Jon
 
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