[Gambas-user] ComboBox UserContol, with pictures.

[Fabien Bodard]

And why reparent... The listview must be in a popup type window.. and then
just move it at textbox screenx and .screeny
Le 17 nov. 2014 22:31, "Jørn Erik Mørne" <epost at ...3323...> a écrit :

>
> Den 17. nov. 2014 21:36, skrev Charlie Reinl:
> > Am Sonntag, den 16.11.2014, 17:57 +0000 schrieb Sam Dadds:
> >> Hi All,
> >>
> >> Need help with a custom ComboBox.
> >>
> >>    I've created a UserControl (extends UserControl) with the normal
> stuff
> >> (TextBox for selection, picture for selected item and picture for
> dropdown button).
> >>
> >>    The actual drop down list is a ListView instead of a ListBox for
> item pictures.
> >> This all works well.
> >>
> >>    Problem is with positioning the drop down list.  The ListView
> actually gets re-parented
> >> to the underlying form so it will display normally even when the
> ComboBox is inside a
> >> toolbar or other container.
> >>
> >>    Finding the correct X and Y is a problem. Depending on how many
> containers the actual
> >> ComboBox is inside the X and Y become difficult to calculate.
> >>
> >>    It seems the borders or margin padding of the additional containers
> are not taken into consideration when reporting the X and Y of the ComboBox
> container.
> >>
> >>    Currently I've tried iterating up the containers via the parent of
> the ComboBox and
> >> add up the left or X properties until the actual parent form is found.
> This is close
> >> but not 100% accurate.  By adding in the Desktop.Scale it gets a bit
> closer but still
> >> off.
> >>
> >>    I've looked at the source for the db version of a ComboBox but the
> internal ListBox
> >> is actually used.
> >>
> >>    Does anyone have an example of this or a better idea of how to use a
> ListView as the
> >> List container of the ComboBox?
> >>
> >>    It's not critical but it would be nice to have item pictures in a
> ListBox or ComboBox.
> >>
> >> Thanks.
> > Salut Sam,
> >
> > have a look at Christof Thalhofer's "Gambas Combobox for Lists and
> > Databases", https://github.com/Deganius/DegComboBox , may be you find
> > some ideas.
> >
> Perhaps I haven't understood your issue, but why not set the
> ListView.Ignore = True and the parent to the current form?
>
>
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