[GSoC] Improved Color Selection - help needed

Krisztian Pinter pin.terminator at gmail.com
Fri Jul 18 07:17:26 PDT 2014

Hi All!

I have realized that one problem is that in the old style I was calling the
ctor of the *ComboBox* directly, and was able to set *WinBits* flags:
*aPaletteComboBox( this, WinBits( WB_BORDER | WB_DROPDOWN | WB_AUTOSIZE) ),*

However, now I use *VclBuilder::get*, and I can't do this. I tried setting
the flags after construction
*mpPaletteComboBox->SetStyle( WinBits(WB_BORDER | WB_DROPDOWN |
but I think these flags affect the object construction itself, so by that
point, it's too late.

*WB_DROPDOWN* is key here, because if it's not set, *mpFloatWin* won't be

I tried looking in Glade, to see if I can set these flags there, but I
couldn't find anything.

All the best,

On 18 July 2014 14:37, Krisztian Pinter <pin.terminator at gmail.com> wrote:

> Hi All!
> I'm working on converting the palette popup window (*SvxColorWindow_Impl*,
> looks like this in my branch right now: http://i.imgur.com/4XAbRaH.png)
> to use the widget layout, and I kind of got it working. It places the
> widgets based on a .ui file, but a *ComboBox* makes LO crash at the
> slightest provocation.
> To make *SvxColorWindow_Impl* use the widget layout, I did some research,
> and I drew this inheritance diagram: http://i.imgur.com/KK2GegK.jpg
> I made *FloatingWindow* also inherit from *VclBuilderContainer*, like
> *Dialog*, and added new ctors to *FloatingWindow* and *SfxPopupWindow*,
> that take two extra string parameters for the .ui file location and the id
> of the root widget.
> I hardcoded the .ui path for *SvxColorWindow_Impl* in its ctor, since
> it's supposed to be a leaf in the inheritance tree.
> I also copypasted *GetOptimalSize*, *SetPosSizePixel*, *SetSizePixel* and
> *SetPosPixel* from *TabPage* to *FloatingWindow*.
> This made the popup window show up, if I disabled parts of the code that
> called methods on the *ComboBox*.
> The *ComboBox* is initialized with *get*, as all other widgets.
> I found that *mpFloatWin* in *ComboBox* gets set to *0xcccccccccccccccc*,
> so I think it's not initialized properly. (I'm giving *get* the correct
> id from the .ui, so that's not it.)
> If I call either *AdaptDropDownLineCountToMaximu**m* or *InsertEntry* in
> the ctor of *SvxColorWindow_Impl*, LO crashes immediately when the popup
> window is opened.
> Are there any well known/typical reasons why this would happen?
> If anyone has any insights, please share them! Thank you!
> All the best,
> Krisztian
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