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SDL disable keyboard and mouse input

Started by woody1987 Jan 24, 2009 at 5:32 AM 2 replies 5.8k views

Original Post

woody1987

Jan 24, 2009 at 5:32 AM

Im writing a simple game and at some point the user has a to move an object across the screen by first clicking the object and then clicking where they would like it placed, this part is working fine, what i want to be able to do is disable all input from the mouse and keyboard while the object is moving. Any help is appreciated.

woody1987

Jan 24, 2009 at 5:41 AM

Ok, i have sorted out the mouse by using SDL_ShowCursor(SDL_DISABLE) but what about keyboard?

pazoozoo

Jan 24, 2009 at 9:41 AM

Can't you just not do anything with keyboard input while an object is moving?

grimfang4

Jan 24, 2009 at 10:24 AM

Yeah, this is just a programming problem, not specifically SDL. Just use a test for your condition like so:

SDL_Event event;bool done = false;while(!done){    while(PollEvent(&event))    {        if(event.type == SDL_QUIT)            done = true;        if(objectIsMoving)        {            // Keyboard and mouse input stuff here        }    }    // Drawing, updating, etc.}

Note that you still need to poll the events, so that you actually discard them. Otherwise, the event queue will fill up and you'll get weird results. Using SDL_ShowCursor(SDL_DISABLE) will hide the mouse cursor, but does not stop events. It is useful when you want to display your own cursor (image) rather than the default one.

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