Change application color to grayscale
Is it possible to define programmatically the color depth of the Qt application window to 8 bit grayscale ?
The final goal is to get the QPixmap of the application window directly in grayscale for my further processing, instead of converting it on the fly, spending a lot of CPU time.
I don't think there's anything like that in Qt.
How often do you capture the pixmap and how large is it?
I have to capture the window each time something changes, so probably it will be in the PaintEvent.