Regarding setWindowState(Qt::WindowMaximized) , showMaximized() and width and height getting from QRect are they same?

[Pradeep Kumar]

Hi,

For the generic to get the screen size
We use

Widget widgetObject;
widgetObject.setWindowState(Qt::WindowMaximized);

                      Or

Widget widgetObject;
widgetObject.showMaximized();

                      Or

QRect rect = qApp->primaryScreen()->geometry();
int width = rect.width();
int height = rect.height();
Widget widgetObject;
widgetObject.setFixedSize(width,height);

Are these three usage one at the same or any much difference?.

Thanks

[raven-worx]

@Pradeep-Kumar
(1) and (2) should result in the same. Although for (1) you should use the following instead widget->setWindowState(widget->windowState() | Qt::WindowMaximized);

(3) is definitly different since there you only set the size but not the state of the window. But i guess it depends on the platforms window system if the appearance is different. But there is a reason for a window state being available.

[Pradeep Kumar]

k then what is the difference between state and width and height of QRect of screen taken?.

Thanks,

[raven-worx]

@Pradeep-Kumar
the state itself. In MS Windows for example watch the different window buttons between the normal and maximized states. Also note that a maximized window doesnt have a border where the just resized one does.
Different states may result in different available actions, etc