I have a main form (an mdi container) with a menu and the item "open".
When clicking "open" a child form appears. Now, i don't want that
several childforms are opened. So i want the "open" item to be
disabled when this child form is shown. When i close this child form
i want the "open" item in the menu to be enabled again so that i can
open the child form whenever i want. How can i do this? Anyone an
idea?

thx.

"Kenny" <(E-Mail Removed)> schrieb
> I have a main form (an mdi container) with a menu and the item
> "open".
> When clicking "open" a child form appears. Now, i don't want
> that
> several childforms are opened. So i want the "open" item to be
> disabled when this child form is shown. When i close this child
> form i want the "open" item in the menu to be enabled again so that i
> can open the child form whenever i want. How can i do this? Anyone
> an idea?

In the menuitem's click event, set it's enabled property to false (that's
what you probably aready know). After creating the instance of the child
within the MDI container, use the Addhandler statement to handle the closed
event of the child. In the event handler, enable the menuitem.


--
Armin

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"Armin Zingler" <(E-Mail Removed)> wrote in message news:<(E-Mail Removed)>...
> "Kenny" <(E-Mail Removed)> schrieb
> > I have a main form (an mdi container) with a menu and the item
> > "open".
> > When clicking "open" a child form appears. Now, i don't want
> > that
> > several childforms are opened. So i want the "open" item to be
> > disabled when this child form is shown. When i close this child
> > form i want the "open" item in the menu to be enabled again so that i
> > can open the child form whenever i want. How can i do this? Anyone
> > an idea?
>
> In the menuitem's click event, set it's enabled property to false (that's
> what you probably aready know). After creating the instance of the child
> within the MDI container, use the Addhandler statement to handle the closed
> event of the child. In the event handler, enable the menuitem.

Can you give me some more information cause i don't quite understand.
This handling stuff isn't really my bag.

"Kenny" <(E-Mail Removed)> schrieb

> Can you give me some more information cause i don't quite understand.
> This handling stuff isn't really my bag.



> In the menuitem's click event, set it's enabled property to false (that's
> what you probably aready know).

directcast(sender, menuitem).enabled = false

> After creating the instance of the child

private m_Child as form2 'at class level (= field of the class)
'...
m_child = new form2

> within the MDI container, use the Addhandler statement to handle the
closed
> event of the child.

addhandler m_child.closed, addressof ChildClosed

> In the event handler, enable the menuitem.

....and remove the handler:

private sub ChildClosed( _
ByVal sender As Object, ByVal e As System.EventArgs)

menuitemx.enabled = true
removehandler m_child.closed, addressof ChildClosed
m_child = nothing
end sub


--
Armin

"Armin Zingler" <(E-Mail Removed)> wrote in message news:<40ae23f4$1$24869$(E-Mail Removed)>...
> "Kenny" <(E-Mail Removed)> schrieb
>
> > Can you give me some more information cause i don't quite understand.
> > This handling stuff isn't really my bag.
>
>
>
> > In the menuitem's click event, set it's enabled property to false (that's
> > what you probably aready know).
>
> directcast(sender, menuitem).enabled = false
>
> > After creating the instance of the child
>
> private m_Child as form2 'at class level (= field of the class)
> '...
> m_child = new form2
>
> > within the MDI container, use the Addhandler statement to handle the
> closed
> > event of the child.
>
> addhandler m_child.closed, addressof ChildClosed
>
> > In the event handler, enable the menuitem.
>
> ...and remove the handler:
>
> private sub ChildClosed( _
> ByVal sender As Object, ByVal e As System.EventArgs)
>
> menuitemx.enabled = true
> removehandler m_child.closed, addressof ChildClosed
> m_child = nothing
> end sub

You are my hero!