Loading forms

[Nauj]

I've made an app with lot of forms. When I go from one form to another. I
make this:
-------------
Load Form1
Form1.show vbmodal
-------------
Making this I go from form1 to form2.
My problem is that in my app I should be able to go from any form to any
other form. Then, it's possible that when I go from form1 to form2, form2
can be loaded and visible, yet. I have a run-time error:
----------------
Run-time error: 400
The form is already visible. It can't be loaded in modal way
---------------
How can I validate if form2 is already loaded?. Which is teh best way to
go from one form to other?.
Any solutions will be gretaly apreciatted.

Nauj

[Alan Gillott]

If you set vbModal, then a form cannot be visible. When you return from a
modal call the form can be invisible or unloaded. I'm not sure from your
description what's going on as you claim the forms are being loaded modally
but then say form two is already visible.

You need took carefully at your form navigation logic. Either all your form
navigation must be managed by a driver routine and the forms made visible
and invisible alternately or, if you must have form1 & form2 invoke each
other then you cannot open them modally.

Of course that means the user, not your program controls which form is
active. I have on occasion worked around this by using the Form.Enabled
property BUT, you must BE CAREFUL, it is very easy to end up with two
disabled forms.
Nauj <juanvidalgil@yahoo.com> wrote in message
news:38d8df09$1@news.devx.com...
>
> I've made an app with lot of forms. When I go from one form to another. I
> make this:
> -------------
> Load Form1
> Form1.show vbmodal
> -------------
> Making this I go from form1 to form2.
> My problem is that in my app I should be able to go from any form to any
> other form. Then, it's possible that when I go from form1 to form2, form2
> can be loaded and visible, yet. I have a run-time error:
> ----------------
> Run-time error: 400
> The form is already visible. It can't be loaded in modal way
> ---------------
> How can I validate if form2 is already loaded?. Which is teh best way to
> go from one form to other?.
> Any solutions will be gretaly apreciatted.
>
> Nauj
>

[Colin McGuigan]

Nauj wrote in message <38d8df09$1@news.devx.com>...
>How can I validate if form2 is already loaded?. Which is teh best way to
>go from one form to other?.
>Any solutions will be gretaly apreciatted.
>
>Nauj
>

Check the Forms collection:

<vaporcode>
Public Function IsFormLoaded(strForm As String) As Boolean
'Eg: IsFormLoaded("Form2")
Dim frm As Form

IsFormLoaded = False
For Each frm In Forms
If frm.Name = strForm Then
IsFormLoaded = True
Exit Function
End If
Next frm
End Function
</vaporcode>
--
Colin McGuigan