Hi and welcome to devnet, QtGStreamer is unmaintained. Depending on what you want to do, you can use the custom pipeline option of QMediaPlayer::setMedia.

@alizadeh91 have you check the documentation about CircularGaugeStyle? When defining your own needle component, the only properties that the style requires you to set are the implicitWidth and implicitHeight. which looks like you're not setting. Also this document refers to styling the needle and those mentioned properties.

@magicstar I have the same problem. Have you find a solution ?

That was to whole error. As for code I have too much to post. Anyhow I fixed it by creating a new header file, copying the contents from the original header file into the new one, deleting the original and renaming the new header file to the name of the original one.

I found a solution for my problem. I had to set renderType=Text.QtRendering to solve the issue. With Qt 5.4.2, I had to set renderType=Text.NativeRendering Very strange to me, but works ;) Regards Fabrice

@primem0ver Yes I'm using Qt5.11.2.

@Christian-Ehrlicher said in SQLite3 Errors: Parameter count mismatch and Unable to fetch row: This overload is really confusion and I wonder if it should not be marked as deprecated. There were already some bugreports about this because the usage was unexpected to the users so they did an exec afterwards and screwed up the query with it. I appreciate your discreetness, but I don't try to hide my stupidity. ;)

You are right! It is my error, rebuild all project with full delete old directory and all work fine. Thanks for fast and good answer!

Alright, I found the error: In the TextEdit {} I had inputMethodHints: Qt.ImhNoPredictiveText because in earlier tests, sending emojis to TextEdit crashed the app. But with PredictiveText disabled, all fancy input methods and hence the different keyboards don't work. Also, Emojis are no problem anymore and animated Gifs are disabled.

The moc files are generated code, they should not be part of the source tree. Nuke them and rebuild with a more recent version of Qt. Qt 4 has already reached end of life for a couple of years now.

@Kinesis You should delete them when they are not needed anymore

Are you sure you ran the correct version of windeployqt ? If you use the tool from the mingw folder for an app that was compiled with MSVC you'll end up with the wrong files and libaries inside your deploy directory.

Problem fixed! The image data has to be written into the buffer returned by the QImage::bits() method. Here's the solution: auto sz = img.byteCount(); uchar* a = new uchar[sz]; memcpy(a, img.bits(), sz); m_lastFrame = QImage(imgSize.width(), imgSize.height(), imgFormat); memcpy(m_lastFrame.bits(), a, sz); // We write the image data into the new QImage delete[] a; And with a QDataStream: QByteArray arr; QDataStream ds(&arr, QIODevice::ReadWrite); ds.writeRawData((const char*)img.bits(), img.byteCount()); ds.device()->seek(0); m_lastFrame = QImage(imgSize.width(), imgSize.height(), imgFormat); ds.readRawData((char*)m_lastFrame.bits(), img.byteCount()); // We read the data directly into the image buffer Thank you so much for your help JKSH an koahnig!!

@ronpetit said in Qt on Raspberry pi3: @sierdzio I'm running it without X server, as I should Now, I'm curious about this, what libs are you using for glesv2 and egl?, I'm using the ones in /opt/vc/lib folder, and I also cross compiled the Qt with those Oh I don't remember to be honest. I think I didn't change anything from stock settings. I also didn't specify the OpenGL libs manually anywhere when building Qt or apps.