[vlc] Re: GUI development based on wxwidgets

Mon Nov 6 06:58:26 CET 2006

Hi Siddique,

Thanks for your nice answer.

Your advice sounds reasonable, but it may not fit for my requirement the 
best...

Let me rephrase it a little bit, normally "About" message box is 
triggered/shown by user's clicking on menu, I hope that it can also be 
triggered by some internal module, e.g. "livedotcom" here. As I can 
imagine, wxwidgets should provide some interface for other internal modules 
to register & pass some event, is it correct ? Everything is the same, 
except for the trigger.

Second question is how I can do function calls between wxwidgets and caller 
("livedotcom"), it seems that some link error always exists...

I still expect for your answer, great thanks !

>From: Siddique Vally-Adam <sid4u at walali.org>
>Reply-To: vlc at videolan.org
>To: vlc at videolan.org
>Subject: [vlc] Re: GUI development based on wxwidgets
>Date: Mon, 06 Nov 2006 08:19:59 +0400
>
>Hi Liu,
>
>i would advice you to create a class derived from wxDialog, that would
>get all the needed parameters (vlc structures).
>This class would handle any event on OK/Cancel button. It would use the
>vlc structures to get the info you need.
>It would be much easier. See the wxDialog sample in wxwidgets directory
>for more information.
>
>On the question about how to dispatch the dialog, well it's kind of easy
>as you just need to instanciate your inherited class wxDialog anytime
>you think it's needed and show it.
>
>You can also call it from the Main wxApp event handler (generate and
>event, post an event, handle the event). If i recall, aMule (coded in
>wxWidgets), does use a nice way to handle events. You should check the 
code.
>
>Good luck
>
>Sid
>
>Liu Andy a ¨¦crit :
> >
> > To give you more details, I wrote a function "abc()" similar to
> > Interface::OnAbout(...) in .../modules/gui/wxwidgets/interface.cpp,
> > then call it from .../modules/demux/livedotcom.cpp,
> >
> > compile is OK, but problem came in linking stage, it shows "undefined
> > reference to abc()"
> >
> > Then what should I do to let "livedotcom" find approriate object
> > containing "abc()" ??
> >
> > Thanks a lot !!
> >
> >
> >> From: "Liu Andy" <liuzhihua_2003 at hotmail.com>
> >> Reply-To: vlc at videolan.org
> >> To: vlc at videolan.org
> >> CC: vlc-devel at videolan.org, videolan-announce at videolan.org
> >> Subject: [vlc] Re: GUI development based on wxwidgets
> >> Date: Sun, 05 Nov 2006 19:03:15 +0800
> >>
> >> Hi,
> >>
> >> Could anybody show any idea about questions below, thanks !!
> >>
> >>
> >> "
> >> Hi All,
> >>
> >> Sorry to bother you guys again.
> >>
> >> What I'm trying to do is as following: 1. When some inernal event
> >> happens, e.g. incoming control message says that current network
> >> bandwidth available is very limited, then VLC media player shall
> >> popup a window or message box alerting user about the situation. Note
> >> that this popup shall NOT block anything else. 2. After user hits
> >> some buttong, e.g. "OK" or "Cancel", VLC media player shall be able
> >> to do some further operation, e.g. stop playing video automatically.
> >> 3. items above are based on WxWidgets. 4. VLC0.8.5 + FC4
> >>
> >> Normally, GUI seems to be triggered by end user, e.g. clicking
> >> operations, but it's not the case here, instead it's some internal
> >> event which triggers window shown. Meanwhile, GUI shall still be able
> >> to capture user's clicking on "OK" button of the window.
> >>
> >> .../wxwidgets/interface.cpp, "void Interface::OnAbout(
> >> wxCommandEvent& WXUNUSED(event) )" This seems to be the event handler
> >> of "About" item in menu, which just uses wxMessageBox() to show the
> >> box, is this a useful reference for me ??
> >>
> >> I also checked development tool for WxWidgets under Fedora, but my
> >> requirement seems too simple for those tools... I still have to
> >> integrate code into VLC code base after GUI object is ready.
> >>
> >> Please show me some hints and a quick solution if you are familiar
> >> with VLC + WxWidgets, thanks a lot.
> >> "
> >>
> >>> From: "Liu Andy" <liuzhihua_2003 at hotmail.com>
> >>> Reply-To: vlc at videolan.org
> >>> To: vlc at videolan.org
> >>> CC: vlc-devel at videolan.org, videolan-announce at videolan.org
> >>> Subject: [vlc] Re: GUI development based on wxwidgets
> >>> Date: Thu, 02 Nov 2006 22:33:36 +0800
> >>>
> >>> Hi All,
> >>>
> >>> Sorry to bother you guys again.
> >>>
> >>> What I'm trying to do is as following:
> >>> 1. When some inernal event happens, e.g. incoming control message
> >>> says that current network bandwidth available is very limited, then
> >>> VLC media player shall popup a window or message box alerting user
> >>> about the situation. Note that this popup shall NOT block anything
> >>> else.
> >>> 2. After user hits some buttong, e.g. "OK" or "Cancel", VLC media
> >>> player shall be able to do some further operation, e.g. stop playing
> >>> video automatically.
> >>> 3. items above are based on WxWidgets.
> >>> 4. VLC0.8.5 + FC4
> >>>
> >>> Normally, GUI seems to be triggered by end user, e.g. clicking
> >>> operations, but it's not the case here, instead it's some internal
> >>> event which triggers window shown. Meanwhile, GUI shall still be
> >>> able to capture user's clicking on "OK" button of the window.
> >>>
> >>> .../wxwidgets/interface.cpp, "void Interface::OnAbout(
> >>> wxCommandEvent& WXUNUSED(event) )"
> >>> This seems to be the event handler of "About" item in menu, which
> >>> just uses wxMessageBox() to show the box, is this a useful reference
> >>> for me ??
> >>>
> >>> I also checked development tool for WxWidgets under Fedora, but my
> >>> requirement seems too simple for those tools... I still have to
> >>> integrate code into VLC code base after GUI object is ready.
> >>>
> >>> Please show me some hints and a quick solution if you are familiar
> >>> with VLC + WxWidgets, thanks a lot.
> >>>
> >>>
> >>>
> >>>> From: RafaÃ«l CarrÃ© <funman at videolan.org>
> >>>> Reply-To: vlc at videolan.org
> >>>> To: "Liu Andy" <liuzhihua_2003 at hotmail.com>
> >>>> CC: vlc at videolan.org,
> >>> vlc-devel at videolan.org,videolan-announce at videolan.org
> >>>> Subject: [vlc] Re: GUI development based on wxwidgets
> >>>> Date: Mon, 30 Oct 2006 15:45:30 +0100
> >>>>
> >>>> Le Mon, 30 Oct 2006 22:05:25 +0800,
> >>>> "Liu Andy" <liuzhihua_2003 at hotmail.com> a Ã©crit :
> >>>>
> >>>> > Currently I use 0.8.5, does it also support "QT4-based interface"
> >>>> ? I
> >>>> > can only see wxwidgets and Skins2...
> >>>>
> >>>> No, 0.8.5 and 0.8.6 use only wxwidgets and skins2
> >>>>
> >>>> the development version use QT too, but it is not finished, and
> >>>> quite unstable.
> >>>>
> >>>> > AND, if I use some QT designer
> >>>> > (e.g. KDevelop) to get my components well prepared, how can I 
merge
> >>>> > it into current framework, how much effort does that need ?
> >>>> >
> >>>>
> >>>> I think that should be easy if you edit existing dialogs.
> >>>>
> >>>> If you want to create new, you could do it from scratch
> >>>>
> >>>> But once these dialogs are made, you have to integrate code that use
> >>>> it, and you'll have to modify the source.
> >>>>
> >>>> > I can see from code that "About" dialog is created using 
wxwidgets,
> >>>> > right ? I've thought that it may be a good reference for me, hehe.
> >>>> > But I just don't know if it's feasible to simulate it within 
code...
> >>>>
> >>>> Well you have the choice, I'm sure good GUI editors exist for
> >>>> WxWidgets
> >>>> too but I don't know any.
> >>>>
> >>>> --
> >>>> RafaÃ«l CarrÃ©
> >>>
> >>>
> >>>> << signature.asc >>
> >>>
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>
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>
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