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Editorial Team
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Editorial Team
Asked: May 15, 20262026-05-15T16:47:50+00:00 2026-05-15T16:47:50+00:00

i have just received a task to implement a software that paints over pictures

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i have just received a task to implement a software that paints over pictures (pretty much like microsoft paint )
i have no idea where to start or how to do that. do anyone have a good reference or idea for painting in qt or pyqt ?

this will be highly appreciated
thanks in advance

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  1. Editorial Team
    Editorial Team
    2026-05-15T16:47:51+00:00Added an answer on May 15, 2026 at 4:47 pm

    You’ll be working with the QImage class, which represents bitmap images. It has methods for changing the colour at a given pixel using setPixel. There is am Image Viewer Example provided with Qt and PyQT should come with the same example in Python. However it uses a Qlabel to display the image so you may want to use a different widget, perhaps a custom QWidget subclass. You can start with that and add functionality to detect the mouse position in the , mouse clicks, etc and change the colours.

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