QGLWidget in QMdiSubWindow

skalimer0

I make a simple project base on the tutorial example "Boxes" : I put the QGLWidget in a QMdiWindow to have multiple windows.

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int main(int argc, char **argv)
{
QApplication app(argc, argv);

QMdiArea *zoneCentrale = new QMdiArea();
zoneCentrale->show();

// CREATION SUBWINDOW based on "Boxes" Tutorial

QMdiSubWindow *sub1 = new QMdiSubWindow(zoneCentrale);
int maxTextureSize = 1024;

QGraphicsScene *scene = new QGraphicsScene(0,0,200,200,sub1);
QGraphicsView *vue = new QGraphicsView(scene,sub1);
QGLWidget *widget1 = new QGLWidget(QGLFormat(QGL::SampleBuffers));
widget1->makeCurrent();

if (!necessaryExtensionSupported()) {
QMessageBox::critical(0, "OpenGL features missing",
"The OpenGL extensions required to run this demo are missing.\n"
"The program will now exit.");
delete widget1;
}

// Check if all the necessary functions are resolved.
if (!getGLExtensionFunction().resolve(widget1->context())) {
QMessageBox::critical(0, "OpenGL features missing",
"Failed to resolve OpenGL functions required to run this demo.\n"
"The program will now exit.");
delete widget1;
}

widget1->makeCurrent(); // The current context must be set before calling Scene's constructor
Scene scene_1(1024, 768, maxTextureSize);
vue->setViewport(widget1);
vue->setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
vue->setScene(&scene_1);
sub1->setWidget(vue);
sub1->show();

// END CREATION SUBWINDOW

return app.exec();

}
@

This code compile and work fine, but if i put the code used to create the subwindow in a function (to create multiple subwindow) : the subwindow is created but will not be refreshed when i'll run my project.

I don't understand... it's exactly the same code (copy/cut)

If anyone have an idea...
Thanks.

melghawi

Can you post the code that uses a separate function for sub window creation?

skalimer0

Like i said... just copy/cut :

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QMdiSubWindow *createSubWindow(QMdiArea *zone) {
QMdiSubWindow *sub1 = new QMdiSubWindow(zone);
int maxTextureSize = 1024;

QGraphicsScene *scene = new QGraphicsScene(0,0,200,200,sub1);
QGraphicsView *vue = new QGraphicsView(scene,sub1);
QGLWidget *widget1 = new QGLWidget(QGLFormat(QGL::SampleBuffers));
widget1->makeCurrent();

if (!necessaryExtensionSupported()) {
QMessageBox::critical(0, "OpenGL features missing",
"The OpenGL extensions required to run this demo are missing.\n"
"The program will now exit.");
delete widget1;
}

// Check if all the necessary functions are resolved.
if (!getGLExtensionFunction().resolve(widget1->context())) {
QMessageBox::critical(0, "OpenGL features missing",
"Failed to resolve OpenGL functions required to run this demo.\n"
"The program will now exit.");
delete widget1;
}

widget1->makeCurrent(); // The current context must be set before calling Scene's constructor
Scene scene_1(1024, 768, maxTextureSize);
vue->setViewport(widget1);
vue->setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
vue->setScene(&scene_1);
sub1->setWidget(vue);
return sub1;
}

int main(int argc, char **argv)
{
QApplication app(argc, argv);

QMdiArea *zoneCentrale = new QMdiArea();
zoneCentrale->show();

QMdiSubWindow *sub = creationSubWindow(zoneCentrale);
sub->show();

return app.exec();

}
@