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Editorial Team
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Asked: 2026-06-10T05:14:27+00:00

I am developing a SDL OpenGL application on Ubuntu and have noticed a problem

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I am developing a SDL OpenGL application on Ubuntu and have noticed a problem with the mouse range when a new window size is set. The initiale size of my application is 600×400 and the mouse range (x,y) reflects this. However, when a user changes the screen to any other size (using given predefined sizes), the mouse range still only reflects a 600×400 screen size and causes issues with mouse location functionality.

To set the new resolution, I call:
SDL_SetVideoMode(Width, Height, 32, SDL_OPENGL); which to my understanding should handle the mouse range resizing but doesn’t seem to do so in Linux. Can anyone give me a solution to this problem?

Note: Possible hack seem to be to exit SDL and re-initialize using SDL_Init(SDL_INIT_EVERYTHING);

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1 Answer

  1. Editorial Team

    After some digging, I found the problem was that I was calling SDL_GetMouseState(0,0) later after the size change was made which apparently was interfering with the recalculation of the mouse range. However, I’ve gone through the SDL source but I can’t really determine how this would effect it so. There seems to be some mouse state switching that may be causing it.

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