Changing Parent Items From Child

Me.MdiParent.SubRoutine

from the child form.

codefund.com at 2007-9-8 >

Public Sub mnu_Changes()
Dim blnEnable As Boolean = (Me.MdiChildren.Length > 0)
mnuPrint.Visible = blnEnable
mnuPrintPreview.Visible = blnEnable
mnuPageSetup.Visible = blnEnable
mnuSpacer2.Visible = blnEnable
mnuWindow.Visible = blnEnable
'MessageBox.Show("The mnu_Changes sub has been entered")
End Sub

And, in another thread, we talked about how you could run this code when the user clicked a menu item on the parent. There's no reason I can imagine where you'd want to run this code from any other place. There's no reason to do this anywhere but when you're about to drop down the menu, and that code looks like this (from the other thread):

Private Sub mnuFile_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles mnuFile.Click
mnu_Changes()
End Sub

In other words, why are you attempting to call this code from a child form? The child form can't affect the state of the menus, and since you want to determine the state of the menu items at the moment you display the menu, there's no point doing it elsewhere.

codefund.com at 2007-9-8 >

I understand your point about the properties. I have made that change since posting my last sample.

As for the second part, I am trying to change the menu items to be hidden again when all child windows are closed. How can I do this effectively?

Jason

codefund.com at 2007-9-8 >

And, they will be disabled if there aren't any children. That's the point. You update the availability of the menu items each time you pull down the menu, so that if there aren't any open children, the menu items won't be available.

Did you actually try it?

codefund.com at 2007-9-8 >