General and Desktop

Hi @samuel-ives, Sidebar is a part of coreplugin: https://code.woboq.org/qt5/qt-creator/src/plugins/coreplugin/sidebar.cpp.html Regards

@rameshguru said in Qt installation: Please use -platform It tells you what to do :-)

@koahnig thanks, I will check with support then.

@sgaist The problem is in qtmultimedia/src/plugins/windowsaudio/qwindowsaudioinput.cpp, in the open() function. It supplies a default buffer size of 200ms, and assigns a period size (the size of the individual blocks to be returned to the application) to be 1/5 of the buffer size, so you only get complete samples if you explicitly set a buffer size that is a multiple of five frames, whatever that turns out to be (20 bytes for 16-bit stereo). I've filed this bug report. In the meantime, you just have to set an explicit buffer size, instead of letting it choose a default.

@christian-ehrlicher You misunderstand - there are two separate commands: glPointSize which is usually in the initializeGL() section of your (C++) program and gl_pointSize which in the shader (vertex, tessellation or geometry). I am using the same Qt OpenGL program on 1) Fedora Linux and 2) Windows. In Linux the glPointSize command works perfectly, but on Windows I get the linking error indicating it is not in the Qt library. Since the Qt version of OpenGL is their own implementation it is not possible to link another version into the program. There is a solution - the point size can be set directly inside the vertex shader thus: gl_PointSize = 10; and the OpenGL property has to be enabled thus: glEnable(GL_PROGRAM_POINT_SIZE); This works on both systems.

Ok. Now it works in android. Thx Br Martin

@bd9a said in QSound wont work, because "return a.exec();" will never be executed.: Thanks, working. please don't forget to mark your post as solved! Thanks.

Hi, I haven't done that since a long time but I would start by clicking on the Create Templates button. IIRC, this will create the AndroidManifest.xml file that is needed when customizing your application.

yes im able to login using mysql -h localhost -u sha256 -p --ssl-mode=required i happened to fine a fix for it just need to tell QSqlDatabase an ip address to connect to instead of the default host name or the "localhost" db.setHostName("localhost"); // doesnt work db.setHostName("127.0.0.1"); // works db.setHostName("::1"); // works still not sure what the problem actually is thanks for the answer anyway edit: but its really strange QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL"); //db.setConnectOptions("SSL_KEY=client-key.pem;SSL_CERT=client-cert.pem;SSL_CA=ca.pem"); db.setHostName("::1"); db.setUserName("sha256"); db.setPassword("password"); qDebug()<< db.open(); qDebug()<< db.lastError(); the setConnectOptions() here can be omitted and it will still connect :)

@sgaist Thanks for the comment. I got it working albeit the solution may be a little kludgy; I couldn't directly detect whether user's mouse click is upon one of the arrow buttons of a scrollbar, so I used a logic like this: When a signal fires to indicate a single-step movement to either direction, call QAbstractSlider::setRepeatAction to override the normal repetition pattern by a pattern without the delay. However, that override must be done only once per mouse-press, so I overrode QScrollBar::mousePressEvent so as to set a "sensitivity flag" for that purpose.

So did you try to pass that path to the linker? Please show us your pro-file

@vronin Great Thanks

@ratzz Actually i have set input mask for my lineedit . when i press the delete key , it doesnt trigger the delete event

hi @cerr, you are in a const member function and therefore cannot change member variables. From the given context, I guess thats whats happens. Regards

@canid Seems like it just do not popup but works . https://bugreports.qt.io/browse/QTCREATORBUG-15392

This is a known bug in MSVC 2019: https://bugreports.qt.io/browse/QTBUG-75280 https://developercommunity.visualstudio.com/content/problem/547684/visual-studio-20191602-generator-incorrect-code-wi.html You will need to wait for Microsoft to release a fix. In the meantime, I suggest you continue using MinGW or use MSVC 2017. (MSVC 2017 is compatible with MSVC 2019)

The paintFBO gets created lazily in paintGL call to make sure GL context is valid. I'm releasing the FBO but removed the release from the snippet. I'm not doing anything specifically with threads. Just normal widgets. I've trimmed my code down to just drawPaintStrokes() and I'm getting the following error: QOpenGLDebugMessage("APISource", 1282, "GL_INVALID_OPERATION error generated. Object is owned by another context and may not be bound here.", "HighSeverity", "ErrorType") Searching around the web, I've seen people claim this is an nvidia driver issue specific to not cleaning up FBOs. Right now all the code is doing is binding the FBO in widget 1, releasing the FBO in widget 1, then trying to do the same in widget 2. Here's a link where someone seems to be running into the same issue: https://devtalk.nvidia.com/default/topic/1043241/linux/framebuffer-doesnt-get-unbound-glitches-only-on-nvidia/post/5292053/#5292053