Thanks. Now I think I manage to do that.

@Hai-Anh-Luu Welcome to the forum. Until the widget is displayed its size, and the size of any child widget in a layout, is unknown. In the widget class constructor^^ the widget is not yet shown so you get either the size hint from the widget concerned or some other value. ^^ That is when executing this line window = NewGrid() One way to see the size that is initially allocated is to do so in a slot connected to a zero-length (or very short) single-shot QTimer. This will fire when the event loop is reached, after the UI is shown. That is when app.exec() is running.

@mpergand Did not worked : setSectionResizeMode(QHeaderView::Fixed); setDefaultSectionSize(10);

@tomendop see documentation for "Layout QML Type". It states: Note: It is not recommended to have bindings to the x, y, width, or height properties of items in a layout, since this would conflict with the goals of Layout, and can also cause binding loops. I can't say exactly what is going wrong in your example, but it is basically that you are doing something you aren't supposed to do when you choose to use the Layout mechanism. I think it can be quite confusing as QML has a number of different ways to manage layout and it isn't always obvious which way is best or most appropriate.

Kind of solved. If I set sizeAdjustPolicy to AdjustToContents and sizePolicy to Maximum, the list widget size will adjust to accomodate items plus small margins around them. I'm quite happy with the result, it would be even better if I could make items equally distribute across available space, but even now it looks good enough.

@hskoglund I confirm that this works nicely. Thanks!

@geodoomgr: your tip helped, now works great on QT 6.6.3 thanks

QScreen should also be available for PyQt.

@jeanmilost Your logic seems to be correct. What you have to do is to move the re-calculation of Scrollbar size & position to the Rectangle rcPageContainer because you are applying scale for that. Rectangle { id: rcPageContainer objectName: "rcPageContainer" ... /// called when page viewport width changed onWidthChanged: { sbHorz.size = rcPageViewport.width / rcPageContainer.width sbHorz.position = Math.min(Math.max(sbHorz.position, 0.0), 1.0 - (sbHorz.size)); } /// called when page viewport height changed onHeightChanged: { sbVert.size = rcPageViewport.height / rcPageContainer.height sbVert.position = Math.min(Math.max(sbVert.position, 0.0), 1.0 - (sbVert.size)); } }

@firen Read "Size Hints and Size Policies" in https://doc.qt.io/qt-5/qwidget.html

@arjun98 said in How do you properly increase QLineEdit increase icon size/: ui->searchbar->setClearButtonEnabled(true); ui->searchbar->QLineEdit::addAction(QIcon(":/img/icons/icon_search.png"), QLineEdit::LeadingPosition); I have tried loading icon to line edit using above code, it's clearly visibile. and image is not blurred. try to experiment loading the icon to QLineEdit without any stylesheet being set to it.

@SGaist Yes Thank! It all makes sense now!

is there any solution for setting Initial Width of QDockWidget in Qt 6 C++ without affecting splitter behavior yet?

@Mr-Workalot First of all, it seems that you don't use any layouts. Secondly, don't hide your widget by just resizing your dialog (if you are trying to do that). Better hide the widget itself. To set a width anyway, you can use QWidget::resize(int w, int h)

Glad you found out and thanks for the detailed solution !

@Jkimmy Thank you for your help.