Re: [Interest] [Qt-creator] Android will require 64bit soon
On Samstag, 2. Februar 2019 16:30:55 CEST ekke wrote: > Am 02.02.19 um 04:29 schrieb Aleksey Kontsevich: > > 01.02.2019, 12:11, "ekke" : > >> Also I think I must then also compile OpenSSL for 32 bit and 64 bit and > >> then need to know HowTo include into .pro> > > That could help You to do this: > > https://github.com/akontsevich/openssl-android-build > Thx Aleksey, > > your github project looks great. Later this month I'll add 64 bit > support to my Qt Android projects and will try to use your project to > build OpenSSL for Android 32 + 64 Bit. Have you been able to use SSL with 64 Bit Android? As it is broken for me https://bugreports.qt.io/browse/QTBUG-73474 And there seem to be more Android 64 Bit issues :( https://lists.qt-project.org/pipermail/android-development/2019-May/ 001092.html Günter ___ Interest mailing list Interest@qt-project.org https://lists.qt-project.org/listinfo/interest
Re: [Interest] Painting with QPainter to QPixmap in C++ method invoked from QML
On Mittwoch, 12. September 2018 09:40:08 CEST Igor Mironchik wrote: > Hello. > > Let's say I have C++ code to draw to QPixmap with QPainter. > > This code returns data:image/png;base64,... string that can be used in QML. > > But when I invoke this method from QML I've got > > QPainter::begin: Paint device returned engine == 0, type: 2 > > So my question is how can I draw with QPainter in back-end from QML? I'm not sure what you would like to do. Do you only show the image in the UI? Then QQuickPaintedItem is probably what you would like to use. For providing images from C++ I write a QQuickImageProvider. But from your error message I'd check if your paint device (QPixmap) is empty. ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] iOS build rejected by App Store Connect
On Montag, 3. September 2018 12:58:28 CEST Nikos Chantziaras wrote: > I followed the guide for the app icons to the letter: > >https://doc.qt.io/qt-5.9/platform-notes-ios.html I think that part of the Qt documentation is outdated. Instead it's mandatory by Apple to use an asset catalog for the icons. Ekke's blog post helped me a lot: https://appbus.wordpress.com/2017/10/06/ios-11-and-xcode-9-in-qt-5-9-x-projects/ -- Guenter Schwann Viking Software http://www.vikingsoftware.com ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] QML vs Electron
On Dienstag, 7. August 2018 15:00:22 CEST Nikos Chantziaras wrote: > But in any case, Android seems fine when using LGPL libraries, since a) > Qt is linked to dynamically, and b) Android officially supports sideloading. Does this cover tivoization (as it's v3 of LGPL) for closed source apps (apk)? >From the FAQ: "The user of your application has to be able to re-link your application against a different or modified version of the Qt library. ..." Guenter Schwann http://www.vikingsoftware.com ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Optimizing performance with hundreds of widgets
On Mittwoch, 15. Februar 2017 17:28:22 CET Gibbs, Matt wrote: > Hi All, > > I’m working on a Qt-based project to display rapidly updating information > from a control system. I want to display hundreds of signals, each > updating at about 10 Hz. As a performance test, I’ve thrown 500 Labels in > a grid layout, and fire a timer every 100 ms which calls setText on each > label. This ends up being surprisingly CPU-intensive: on reasonably modern > hardware (2012 MacBook Pro), I use 70% of one CPU. This doesn’t leave me > much overhead to do anything else. I get about 25% CPU usage on my 2.5GHz Linux Notebook. And when I use a single custom widget to draw all texts in a single paintEvent, CPU usage drops to about 15%. https://gitlab.com/gschwann/WidgetsPerformance -- Günter Schwann | Freelancing Software Engineer | Qt Expert Partner Consultant of Viking Software guen...@vikingsoft.eu ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Qt Creator does not "see" precompiled header
On Mittwoch, 15. Februar 2017 17:17:14 CET Alexander Dyagilev wrote: > Hello, > > It's very annoying... Isn't it? > > One has to write all these includes in every header file. Again and > again... :( You could include the "precompile-header" (pch.h). As this includes all the needed headers. But I do not recommend that. As you should only include what you use. Regards -- Günter Schwann | Freelancing Software Engineer | Qt Expert Partner Consultant of Viking Software guen...@vikingsoft.eu gun...@schwann.at http://www.vikingsoft.eu http://www.schwann.at/guenter ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] [PROGRESS] Long pause with 5.7
On Montag, 14. November 2016 19:15:46 CET william.croc...@analog.com wrote: > - Restoring window locations to where the user left them... >Just one of a dozen behaviors of a good application >which is not implemented well (if at all) by Qt and, >therefore, has to be implemented by the developer. It's quite back a while since I used it, but using QWidget::saveGeometry() and restoreGeometry() on the QMainWindow worked well for me. http://doc.qt.io/qt-5/qwidget.html#saveGeometry http://doc.qt.io/qt-5/qwidget.html#restoreGeometry Guenter ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] CLion to replace QtCreator?
On Tuesday, April 05, 2016 05:18:08 PM Emre Besirik wrote: > Some of the lacking features are smart autocomplete maybe At least with QtCreator 4.0 beta most issues are resolved for me. What exactly do you mean by "smart"? > Ctrl+K like search but improved in a better UI I watched https://www.youtube.com/watch?v=j7nT9QWjOBA Nothing stunning there. Mostly the same as Ctrl-K (you see more options the poping up). Some are Ctrl-Tab, Ctrl-Shift-I, Ctrl-Shift-T. Is there something like Alt-Left for CLion? > but most lacking part comes in UI/UX I like QtCreator because it doesn't come with a bloated UI (in constrast to Visual Studio). The UI is very lightweight. Close to a simple editor. But as soon as you know some shortcuts, it gets extremely powerful. Maybe you should have a look at https://www.kdab.com/qtcreator And again - which technology or trends do you think QtCreator is _eons_ behind? Regards Guenter ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] CLion to replace QtCreator?
On Tuesday, April 05, 2016 04:19:42 PM NoMercy wrote: > That QtCreator is eons behind current technology and trends, isn't it very > obvious? No! Absolutely not. QtCreator is a really great IDE. Very lightweight, but still very powerful. Simply using the "Esc" button is a single fantastic feature that I haven't seen elsewhere. And for the technology: CLion as well as QtCreator are using clang for the code model (which is the heart of an IDE). What other technology do you mean? What trends do you see for IDEs? > I would say just checkout features of ANY JetBrains product but > you don't even intend to so you are in therefor denial. (Not personally you > but many people who are objecting these) I haven't used it yet - granted. But I have watched all the CLion releases so far. They are looking promising. But I haven't seen any major feature that QtCreator would lack (C++ only). I guess you haven't read the manual of QtCreator. So you missed tons of features. And yes, QtCreator is not perfect. Especially the clang code model still needs polishing (speed is not up to the old model). QtCreator 4.0 (beta) is looking really nice :) Regards Günter ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] CLion to replace QtCreator?
On Monday, April 04, 2016 03:28:03 PM Emre Besirik wrote: > * Search! (like spotlight search with just one shortcut key to open file > or go to a particular location in your code): > * search symbols > * files in your project > * search everywhere > * you can lookout jetbrains IDEs for more examples You mean Locator? http://doc.qt.io/qtcreator/creator-editor-locator.html > * ONE key to kill all other views > and leave code windows open only (like distraction free mode of > intellij) Set a shortcut for "CloseAllExceptVisible"? > * go proactive, generate getters/setter and stuff like that. Move the cursor to the member variable in the class and press Alt-Enter ... > >> * have tons of more keyboard shortcuts (check out intellij) There are a tons of shortcuts, and you can fully customize them. http://doc.qt.io/qtcreator/creator-keyboard-shortcuts.html > * have a better user friendly UI I like the UI a lot. > I’m sorry to say this but QtCreator is actually eons behind the current > IDE trends and technology :( QtCreator works really well for me. I prefer it over VisualStudio. CLion looks nice. But I haven't seen a lot of features not available in QtCreator. By the way it seems you missed quite some refactoring: http://doc.qt.io/qtcreator/creator-editor-refactoring.html Regards Günter ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] How can I build qt-Windows using WMF as multimedia backend?
On Sunday, March 06, 2016 08:26:17 AM Liang Jian wrote: > Thank you for the reply. > But do you know why WMF backend will be removed from Qt 5.7 given the > fact that DirectShow has been deprecated by Microsoft and WMF seems to be > the future? Very good question. Especially as I'm looking for video recording support for the Windows desktop. Can someone tell what the future plans of QtMultimedia are (specially for the Windows desktop?). If I'd add video recording support for windows desktop, which plugin would I work on? Cheers Guenter ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
