[SOLVED] Cast event when window size is changed

[Bremenpl]

@p3c0
Sorry for the formating. yes, I am trying to move a widget (UndoView) when the MainWindow is resized.

[p3c0]

@Bremenpl And what is UndoView ? What type ?

[Bremenpl]

@p3c0
Its something I am trying to implement from here http://docs.knobbits.org/qt4/tools-undoframework.html#mainwindow-class-definition

[p3c0]

@Bremenpl If you want to some it in accordance with the MainWindow that you can get width and height from QResizeEvent and move the QUndoView. Something like

void MainWindow::resizeEvent(QResizeEvent *e)
{
    undoView->move(e->size().width(),undoView->y());
}

This will move undoView on x axis as mainwindow resize. Add some more calculation as per your requirement.

[Bremenpl]

@p3c0
Accesing undoView in resizeEvent scope causes segmentation fault, thats the problem.

[p3c0]

@Bremenpl Ok. So is undoView initialized before using it ?

[Bremenpl]

@p3c0
Theres an initialisation of the pointer in the class header:

QUndoView *undoView;

Then In the mainwindow constructor I am running:

undoStack = new QUndoStack(this);
undoView = new QUndoView(undoStack);
undoView->setWindowTitle(tr("Command List"));
undoView->setWindowFlags(Qt::WindowStaysOnTopHint);
undoView->setAttribute(Qt::WA_QuitOnClose, false);
undoView->show();

moveUndoView(); // PLEASE NOTE THAT THIS WORKS IN HERE, NO SEGFAULTS

[p3c0]

@Bremenpl Does it crash when you attempt to resize manually or as soon as you execute the application ? Because resize event will be fired at application startup too. Make sure undoView was initialized prior to this first resize event.

[Bremenpl]

@p3c0
You are right, that is the problem. The thing is, that I cant really create this object before i execute this->show() (MainWindow), because the program crashes as well.

Edit: undoStack and undoView had to be both declared before ui is build, I have forgot about that one. Now everything works, thank you a lot for help!

[p3c0]

@Bremenpl You're Welcome :) You can mark the post as solved by editing the post title and prepending [Solved].
Happy Coding..