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Editorial Team
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Asked: 2026-05-19T01:24:28+00:00

I have the following problem: A program displays a picture using a PictureBox .

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I have the following problem: A program displays a picture using a PictureBox. The picture contains two rectangles A and B that are drawn after the image is loaded.

Illustration

The image inside the picture box is zoomed and the rectangles A and B are painted using the Graphics object of the loaded image. Is there a simple method to determinate if a user clicked the area inside these rectangles e.g. converting screen coordinates to picture coordinates.

Edit: No longer relevant, found another solution.

Edit 2: My solution was to use two picture boxes at the A and B location instead of modifying the image directly. It has some minor disadvantages specific to my solution, but I had to finish the project in time

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  1. Editorial Team

    This SO post discusses the zoom factor of a picture box and that you cannot determine it.

    Therefore I think, without getting the zoom factor, you may not be able to calculate the position.

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