CODEWITHSUNDEEP
linuxsdl
Jordan Ell
Jordan Ell

Reputation: 1805

SDL mouse range on resize

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 600x400 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 600x400 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);

Upvotes: 1

Views: 244

Answers (2)

Jordan Ell
Jordan Ell

Reputation: 1805

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.

Upvotes: 1

Jason Huntley
Jason Huntley

Reputation: 3877

Anytime i resize the window, I execute the following to refresh my viewport:

m_ParentWindow = SDL_SetVideoMode( m_width, m_height, m_depth, m_SDL_Vid_Flags );

glViewport(0,0,m_width,m_height);

Clear();

Where Clear calls:

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();

Upvotes: 0

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