[Gambas-user] Building a custom MyComboBox

[Daniel Quintero]

aIDs is an array of Integers (You can declare an array of Strings if is
your case, or an array of Variants), and you can assing that array to a
Variant variable, as is the case of the Tag property of the combobox.

*_________________________*
*Lic. Daniel Quintero Rojas*

*¡Saludos desde México!________*



On Mon, Mar 3, 2014 at 2:29 PM, Matti <matti.eber at ...3240...> wrote:

> Thanks, Daniel.
> But I don't understand how you can assign the aIDs Integer[] to the
> ComboBox.Tag that is a variant?
> Anyway, I'd prefer a custom combo, since I need it often in a form and
> don't want to write everything again and again.
>
> Am 03.03.2014 21:04, schrieb Daniel Quintero:
> > I use this code (Obviously, without creating a custom combo):
> >
> > Public Sub LoadCombo()
> > Dim aIDs As New Integer[]
> > Dim sQuery As New String
> >
> >    cboSample.Clear
> >
> >    ' Load Data
> >    hResult = $hConn.Exec("select ID, desc from MyTable")
> > http://gambasdoc.org/help/comp/gb.qt4/combobox?v3  For Each hResult
> >      cboSample.Add(hResult!desc)
> >      aIDs.Add(hResult!ID)
> >    Next
> >    cboSample.Tag = aIDs
> >
> > End
> >
> > Public Sub cboSample_Change()
> >    If cboSample.Index > -1 Then
> >      Message("ID associated with '" & cboSample.Text & "': " &
> > cboSample.Tag[cboSample.Index])
> >    Endif
> > End
> >
> > Regards
> >
> > *_________________________*
> > *Lic. Daniel Quintero Rojas*
> >
> > *¡Saludos desde México!________*
> >
> >
> >
> > On Mon, Mar 3, 2014 at 1:55 PM, Tobias Boege <taboege at ...626...> wrote:
> >
> >> On Mon, 03 Mar 2014, Matti wrote:
> >>> I'm playing around with a ComboBox that should have some special
> >> features.
> >>> Looked into the sources and found out how to create and inherit it.
> >>> Subs, Functions and Events  work.
> >>>
> >>> But one thing is a complete riddle to me:
> >>> In the wiki, it says: "For example, you can create a custom MyListBox
> >> class that inherits ListBox <
> >> http://gambasdoc.org/help/comp/gb.qt/listbox?view> but allows to
> >> associate a tag with each list item."
> >>> That's exactly what I'd need for MyComboBox: each list item with a tag
> >> (ID from a database).
> >>> Could someone give me a hint how to do that?
> >>> Thanks, Matti
> >>>
> >> You could have a
> >>
> >> Private $aTags As New Variant[]
> >>
> >> in your class which associates a Variant with an item via the item's
> index.
> >> You need to maintain that array, though. Watch out for the Add(),
> Clear()
> >> and Remove() methods and the List property! I'm not familiar with the
> >> sources, so I don't know if there is a smarter way (and I'm assuming
> that
> >> you write the extended ComboBox in Gambas).
> >>
> >> Regards,
> >> Tobi
> >>
> >> --
> >> "There's an old saying: Don't change anything... ever!" -- Mr. Monk
> >>
> >>
> >>
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> ------------------------------------------------------------------------------
> Subversion Kills Productivity. Get off Subversion & Make the Move to
> Perforce.
> With Perforce, you get hassle-free workflows. Merge that actually works.
> Faster operations. Version large binaries.  Built-in WAN optimization and
> the
> freedom to use Git, Perforce or both. Make the move to Perforce.
>
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