setGeometry vs Resize+Move

[SamurayH]

Hi,
I have a dialog, that I need to resize 2 or 3 times. The dialog should always be centered, so I use resize , and move:

// within the dialog class (a slot)
this->move(x() - ((newWidth-width())/2) , y() - ((newHeight-height())/2));
this->resize(newWidth, newHeight);

This code works, but when I use setGeometry with the same parameters it won't work. I need setGeometry to work because I want to animate the resizing.
That's it. Thanks for your help.

[mrjj]

Hi
in what way does setGeometry not work ?
http://doc.qt.io/qt-5/qwidget.html#geometry-prop
This is relative to parent coordinates
However, Move docs says
"If the widget is a window, the position is that of the widget on the desktop, including its frame."
And since you have a dialog, it might apply.

Anyway, you can center a dialog to center of screen with

#include <QStyle>
#include <QDesktopWidget>

window->setGeometry(
    QStyle::alignedRect(
        Qt::LeftToRight,
        Qt::AlignCenter,
        window->size(),
        qApp->desktop()->availableGeometry()
    )
);

[SamurayH]

Solved. Thanks so much @mrjj.