Re: [wxlua-users] wxGLCanvas not drawing on OSX

On Sat, Aug 22, 2009 at 11:22 AM, Tyson Roberts<wx...@ca...> wrote:
>

> I'm using wxLua on OSX10.5 and attempting to get a "Hello world" type
> program working on wxGLCanvas().
>
> Basic problem:
>     - Have my own custom wxWindows program, running as an OSX app.  Using a
> wxLua interpreter.
>     - Used the wxLua binding system to create rudimentary OpenGL bindings
> (I've tried other pre-made GL bindings, but those approaches but got crashes
> when dynamic libraries were being loaded that I couldn't track down).
>     - Linked against the stock OSX OpenGL.framework.
>     - Created a window in lua, added a wxGLContext.
>
> Result:
>     - It shows up grey, no rendering.
>

I have never tried to use OpenGL with wxWidgets.

You can look at the wxWidgets C++ samples to see if they do any
special initialization of the GL canvas.

http://svn.wxwidgets.org/viewvc/wx/wxWidgets/trunk/samples/opengl/

The cube.h/cpp looks simple enough, they create a TestGLCanvas which
is a wxGLCanvas, but notice that they use a TestGLCanvas::OnPaint()
connected to a wxEVT_PAINT to do the drawing. Also note
MyApp::GetContext() which is odd to me, but I think it simplifies to

wxGLContext.SetCurrent(wxGLCanvas)

I hope this helps,
    John