get QOpenGLWidget window size?

[s002wjh]

how do i get the current GUI display size for QOpenGLWidget

example

class test : public QOpenGLWidget{
.....
}

pointer_test = new test;
pointer_test ->setMinimumSize(100,100);

but this size change when i drag the window around, so like to get the current window size after i dragged.

[SGaist]

Hi,

Moving a window shouldn't resize it.
What do you do ?
What does exactly happen ?
What OS are you running ?
If Linux what window manager are you using ?
What version of Qt ?

[JKSH]

Do you mean "resize" instead of "drag"?

@s002wjh said in get QOpenGLWidget window size?:

but this size change when i drag the window around, so like to get the current window size after i dragged.

QOpenGLWidget inherits QWidget, so you can call QWidget methods.

https://doc.qt.io/qt-5/qwidget.html#size-prop

[s002wjh]

actually i just like to know how to get the dimension of the display window.
if i set

pointer_test ->setMinimumSize(200,100);

what function do i used(Qsize?) so Qsize::width() return 200?

[SGaist]

What was already suggested by @JKSH.

Note that you set the minimum size for your widget. That action alone won't make it that size. The next question is: do you want your widget to be resizable ?

[JKSH]

@s002wjh said in get QOpenGLWidget window size?:

what function do i used(Qsize?) so Qsize::width() return 200?

You want to find the widget's size, so you should call the QWidget::size() method.

So far, your code is calling the QWidget::setMinimumSize() method. Its documentation is at https://doc.qt.io/qt-5/qwidget.html#minimumSize-prop

Note: QSize is a class.