On Mon, 30 Jul 2007 14:09:57 +0200
Giuliano Colla <[EMAIL PROTECTED]> wrote:
> Interface
>
> uses Suggestions,MyOwnIdeas;
>
> type
>
> TAdvanced: class(TCurrentDialogAsItIs_WrittenByMattias);
>
> TNewPage: class (TAnotherPage);
>
> QuickBuildOptionsRadioGroup: TRadioGroup; // As suggested by
> Mattias
>
> IDE_LCL_WidgetSet: TComboBox; // Populated as the Radiogroup of
> the Advanced page (or with a reduced set - just IDE supported
> widgetsets)
>
> Target_LCL_WidgetSet: TComboBox; // Populated as the Radiogroup
> of the Advanced page
>
> { For beginners the LCL choice is sometimes confusing - two choices,
> one for the IDE LCL, and one for the Target application LCL could be
> easier to understand. Moreover this would avoid the annoying
> situation which comes from having selected fpgui or qt to compile the
> LCL, then rebuild the IDE forgetting to change widgetset, and come
> out with an IDE which won't start}
Note: eventually the LCL should be compiled automatically like any
other package. That means, if you switch the widgetset in the project
to qt and press F9, the LCL will be built for qt.
> end;
>
> Implementation
>
> uses WhatIsAlreadyThere,ALotOfPatience;
>
> Here's where problems arise. The existing Dialog is composed by a
> Form with Autosize set to True, and objects properly anchored, so
> that resizing the form will resize and reposition objects in an
> orderly manner, while resizing objects (such as ItemsListBox) will
> increase form size to properly accommodate everything.
>
> My first attempt has been with a notebook and a bottom panel (to keep
> the Compile/Save/Cancel buttons).
>
> Form resizing works properly with gtk2, but doesn't work properly
> with gtk1 (horizontal resize widens the anchored objects, vertical
> resizing just adds blank space to the bottom of the notebook page).
bug. I think it is already reported.
> Resizing ItemsListBox doesn't work. The notebook page (and the form)
> isn't resized, the extra space is added or subtracted from the height
> of the first widget which doesn't have a size constraints property to
> keep it from changing (in our case the Target Directory Combo Box).
>
> Second attempt: faking a notebook with Panels: one Top Aligned with
> two buttons (Quick Options and Advanced) which are properly enabled
> and disabled, so that only the correct option is available, one
> Bottom Aligned with Compile/Save/Cancel, and a central panel, where
> Quick and Advanced options are hidden or made visible.
> Form resizing works properly both with gtk1 and gtk2, but
> ItemsListBox resizing behaves exactly as in the other case.
>
> I'm afraid that I'm against a logical limitation. In order to have my
> Panel, or Notebook, follow the form resize, it must be Client Aligned.
> This means that whenever the form is resized, the panel is notified.
> To have my Panel to autosize, it must notify the form whenever it
> requires a size change. But doing that would create a circle: A is
> resized and notifies B, which is resized and notifies A, which is
> resized, etc.
> I've reached the conclusion that autosizing can work properly only in
> a form, and not in a Client aligned object contained in a form.
> Am I missing something? There's some anchoring trick which could do
> the job? Or should I take a completely different approach, i.e. just
> a form, with properly anchored widgets, hidden or made visible in
> order to create two different pages? Sort of Quick Page makes visible
> only the objects with Tag = 0, Advanced Page only objects with Tag =
> 1?
>
> Waiting for competent advice
Can you send me an example form?
Mattias
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