taking screenshots in a pyqt app

Hi Marco, I hope all is well.

I’ve recently developed a pyqt application to make a GUI for brainrender. This includes a QVTKRenderWindowInteractor widget that replaces the default Plotter used by the brainrender Scene. See the docs for more details.

I’m trying to add a button to take screenshots, but it’s not working. It does take screenshots correctly (using vedo’s screenshot function), but the resulting images are empty (just a transparent or black background). Is there some issue with using QVTKRenderWindowInteractor and taking screenshots at the same time?

In alternative I’ve also tried creating a new Plotter instance without qtWidget to use for taking the screenshot, but when I render that I just get an entirely red window and can’t see anything in the scene. The resulting screenshot is also an entirely red image. I don’t get any error or warning message.

Thank you for you help, Fede

[FedeClaudi]

oh cool, thank you so much for testing it out! I will give it a shot tomorrow 😃

[marcomusy]

Hi Federico …it’s a bug! it will be fixed in the next major release, for the moment you may try setting the window manually with this hack:

self.vp.window = self.vp.interactor.GetRenderWindow() where vp is of class vedo.Plotter and self is of class Qt.QMainWindow (see example vedo -r qt_window1)