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cast subclassed widget
Posted: Tue Jun 12, 2018 10:08 pm
by papillon68
Hello and sorry for the newbie question. I'm using the OpenGL/pyramid sample and I'd like to the glCanvas into a wxPanel rather than the main frame.
In the sample:
Code: Select all
if ( accepted ) m_mycanvas = new MyGLCanvas(this, vAttrs);
the canvas
this parent is a subclassed wxFrame (MyFrame).
I'd like to go this way instead:
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wxPanel *oglPane = new wxPanel(this, wxID_ANY, wxDefaultPosition, wxSize(300, 200));
if ( accepted ) m_mycanvas = new MyGLCanvas(oglPane, vAttrs);
Now, I've searched and tried using wxDynamicCast but no matter what, I can't find a way to overcome the issue. Any suggestion is greatly appreciated.
Re: cast to subclassed widget
Posted: Tue Jun 12, 2018 10:24 pm
by doublemax
What's the definition of the MyGLCanvas constructor? Most likely the first parameter is a wxFrame*. Change it to wxWindow* and it will probably work. If not, post the error message (and more code).
Re: cast to subclassed widget
Posted: Wed Jun 13, 2018 9:20 am
by papillon68
Hi and thanks for the help. I did as you suggested and the code compiles fine; however, the OpenGL canvas doesn't show anything.
In the case somebody might take a look, I'm attaching the source code (it's the pyramid sample slightly changed): I basically would like to have a wxPanel with some controls, and a separate wxPanel with the OpenGL canvas.
I'm not sure why isn't working correctly, I created both wxPanel's and added the controls accordingly. Thanks.
Re: cast subclassed widget
Posted: Wed Jun 13, 2018 3:08 pm
by Manolo
Your issue may come from using fixed sizes and positions. Better create one or several wxsizers and let them do the windows layouts.
The layout may be something like
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main Frame
_____________ _____________
| panel | | glcanvas |
| | | |
___________________________
| static text |
|__________________________|
then use two wxBozSizer's:
a) sizerH horizontal, handling panel and glcanvas (there's no obvious profit in putting a glcanvas as child of a panel)
b) sizerV vertical: handles sizerH and the static text
If the panel has several controls, then use another sizer for them.
Re: cast subclassed widget
Posted: Wed Jun 13, 2018 3:50 pm
by papillon68
Thanks Manolo that makes sense. Will follow your hints and report...