how to show window in the center of the screen?

[lovelypp]

how to center the window in the screen ? is there an centreWindow method ?
thanks!

[caduel]

Check out
QDesktopWidget::availableGeometry()QWidget::frameGeometry()QRect::moveCenter()
so, something like

// w is your window
QRect r = w->frameGeometry();
r.moveCenter(QDesktopWidget::availableGeometry());
w->move(r.topLeft());

// w is your window
QRect r = w->frameGeometry();
r.moveCenter(QDesktopWidget::availableGeometry());
w->move(r.topLeft());

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might work.

You have to take care about when you call that, though.
Things like frameGeometry() etc return incorrect values if called "too soon" (if the widget is not yet shown).
You might have to execute that code in reaction to an internal QShowEvent.

HTH

[lovelypp]

I just want the window to be shown central the first time it is shown. so How ?
thanks anyway!

[LarryP]

In Visual Studio when you design a form, it has the option to center it a few different ways. Designer should also have that option in the properties section, but nothing even remotely related is there for window placement. However, I'm certainly not going back to VS anytime soon if ever.

[hamidarr]

use this code in constructor

QDesktopWidget *desktop = QApplication::desktop();
 
    int screenWidth, width;
    int screenHeight, height;
    int x, y;
    QSize windowSize;
 
    screenWidth = desktop->width();
    screenHeight = desktop->height();
 
    windowSize = size();
    width = windowSize.width();
    height = windowSize.height();
 
 
    x = (screenWidth - width) / 2;
    y = (screenHeight - height) / 2;
    y -= 50;
 
 
 
    move ( x, y );
 
    setFixedSize(windowSize.width(), windowSize.height());

QDesktopWidget *desktop = QApplication::desktop();

    int screenWidth, width;
    int screenHeight, height;
    int x, y;
    QSize windowSize;

    screenWidth = desktop->width();
    screenHeight = desktop->height();

    windowSize = size();
    width = windowSize.width();
    height = windowSize.height();


    x = (screenWidth - width) / 2;
    y = (screenHeight - height) / 2;
    y -= 50;



    move ( x, y );

    setFixedSize(windowSize.width(), windowSize.height());

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[jeux]

include QDesktopWidget:
#include <QDesktopWidget>

after that let's say your window is "w" (MainWindow w
w.move(d.geometry().center().x() - w.width() / 2, d.geometry().center().y() - w.height() / 2);