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>Chapter 8. Events</H1
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>SDL Event Structures.</A
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>Introduction</H1
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>Event handling allows your application to receive input from the user. Event handling is initalised (along with video) with a call to:
<PRE
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>SDL_Init(SDL_INIT_VIDEO);</PRE
>
Internally, SDL stores all the events waiting to be handled in an event queue. Using functions like <A
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>SDL_PollEvent</TT
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> and <A
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>SDL_PeepEvents</TT
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> you can observe and handle waiting input events.</P
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>The key to event handling in SDL is the <A
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>SDL_Event</SPAN
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> union. The event queue itself is composed of a series of <SPAN
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>SDL_Event</SPAN
> unions, one for each waiting event. <SPAN
CLASS="STRUCTNAME"
>SDL_Event</SPAN
> unions are read from the queue with the <TT
CLASS="FUNCTION"
>SDL_PollEvent</TT
> function and it is then up to the application to process the information stored with them.</P
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author	Sam Lantinga <slouken@libsdl.org>
date	Tue, 17 Mar 2009 03:24:22 +0000
parents	355632dca928
children