Detect CancelButton

mountainyman

If the CancelButton (top right X ) is clicked on a form is there any way to detect the action?

Veeeeeery Good Question Seamus

In VB.net if a forms CancelButton is clicked can this interaction be detected. Alternatively is it possible in VB.net to determine which forms are currently visible. In aforms collection which can hold only 1 copy of each form at a time.


The formis currently initialised as show dialog but that is negotiable.

MM

seamus

What language? What kind of form?

mercuroman

I presume you are talking about using winforms in vb.net. If you are using a dialog box - ie. Open File Dialog - then you can tell what the user has clicked by doing the following:
Dim dr as DialogResult
dr = OpenFileDialog.ShowDialog()
if (dr = DialogResult.OK) then (user has hit ok)
else if (dr = DialogResult.Cancel) then (user has hit cancel)

Is this what you are looking for?

stevenmu

I think he means a standard form (window).

If so the easy way is to handle the form_closing event

Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
        MessageBox.Show("Goodbye")
End Sub

and if you need to override it

Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
        MessageBox.Show("Goodbye")
        e.Cancel = true
End Sub

It's not technically catching the x button, it'll also fire if the form is closed other ways too.

mountainyman

StephenMu that's amazing. That really did the trick.