Hello!
I'm stuck on one problem.
There is kind of big project, and I need to make Qt interface on it. What I try
to do is make a camera for Qt-interface element. The problem comes with using
OpenThreads: I'm trying to run OSG rendering inside new thread, yielding to
rendering of Qt element, like in osgQtBrowser example.
First, I create class to handle thread creating:
Code:
class ViewerFrameThread : public OpenThreads::Thread
{
public:
ViewerFrameThread(osgViewer::ViewerBase* viewerBase, bool doQApplicationExit):
_viewerBase(viewerBase),
_doQApplicationExit(doQApplicationExit) {}
~ViewerFrameThread()
{
cancel();
while(isRunning())
{
OpenThreads::Thread::YieldCurrentThread();
}
}
int cancel()
{
_viewerBase->setDone(true);
return 0;
}
void run()
{
int result = _viewerBase->run();
if (_doQApplicationExit) QApplication::exit(result);
}
osg::ref_ptr<osgViewer::ViewerBase> _viewerBase;
bool _doQApplicationExit;
};
Then I try to run my viewer using it:
Code:
ViewerFrameThread frameThread(m_viewer.getViewerBase());
frameThread.startThread();
return QApplication::exec();
And here comes problem: if I use "frameThread.startThread()" like in example,
my project gives me access violation, like every try in new place. Otherwise,
if I use "frameThread.run()", everything runs OK but Qt button isnt getting
rendered (just a white block in the corner of the screen)
I've tried to make a simply application with just model and Qt-button, and
everything works fine with ".startThread()", as button doesnt get rendered with
".run()" same as in my big project. Could not find any documentation of
OpenThreads. :(
So the question is, like: is it possible to render Qt thingy with ".run()", or
what can possibly cause Access Violation with ".startThread()"?
I'm sorry if the explanation wasnt very clear, though hopefully someone can
help :)
Thanks in advance!
Cheers,
Max
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=50049#50049
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