[Development] Qt 5.15.5 Opensource released

2022-06-16 Thread Tarja Sundqvist
Hi all, we have released Qt 5.15.5 opensource today: * release note: https://code.qt.io/cgit/qt/qtreleasenotes.git/about/qt/5.15.5/release-note.md * source packages in download.qt.io: * https://download.qt.io/official_releases/qt/5.15/5.15.5/ * https://download.qt.io/o

Re: [Development] QML Demo has a higher memory usage than Wdiget Demo

2022-06-16 Thread YaNing Lu
Many thanks Volker, Your reply is very helpful to me. I am currently using Qt5.15 (due to various reasons, I am not ready to use Qt6 yet), and I found that QML applications will depend on the Widgets library. Referring to Qt6, I separated Qt5 svgwidget and opengwidget, so that there is some optimi

Re: [Development] QML Demo has a higher memory usage than Wdiget Demo

2022-06-16 Thread Volker Hilsheimer
QML/Qt Quick and Widgets are based on fundamentally different rendering technologies. Widget applications have a backing store, which is (simplified) a raster image for each toplevel window; that raster image has as many pixels as required for the size of the window. When a line or text is draw

Re: [Development] QML Demo has a higher memory usage than Wdiget Demo

2022-06-16 Thread YaNing Lu
>You didn't answer the question.>>The difference is that QML is a different >technology from widgets.>>If you want more details, please use a memory >profiler to size the heap (as >opposed to memory mappings) and find out >consumes most memory. Thanks Thiago, I understand that my program has