I’m sorry for the duplicate post. I did a further test: creating a QTimer in the QPaintedTextureImage’s subclass ctor, so I don’t have the "TypeError: Property 'update' of object QPaintedTextureImage is not a function” error. However, now the program crashes in QPainter::drawImage, with this message in console:
2019-02-01 11:15:45.754907+0100 Qt3DOpenCV[55788:4839633] QPaintDevice: Cannot destroy paint device that is being painted If anyone is interested in trying this, I created a repository with complete testcase (the QML timer is commented out, and the Timer is created in C++) at https://github.com/fferri/Qt3DOpenCV-test On 31 January 2019 at 23:50:40, Federico Ferri (federico.ferri...@gmail.com) wrote: Hi, I’m trying to display a stream of images from a capture device in Qt3D (via a texture). So I subclassed QPaintedTextureImage overriding paint(). According to documentation of QPaintedTextureImage, each time update() is called, the paint() function is invoked and the resulting image is uploaded. I’m trying to do so from QML (i.e. I have a Timer { onTriggered: myTexImage.update() }) but I get the error: 2019-01-31 22:48:54.865282+0100 Qt3DOpenCV[50001:4569220] qrc:/MyScene.qml:57: TypeError: Property 'update' of object Qt3DRender::QPaintedTextureImage(0x106ef6bf0) is not a function How shall the update() method be invoked?
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