SDL Library Documentation
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# Chapter 8. Events

# Introduction

Event handling allows your application to receive input from the user. Event handling is initalised (along with video) with a call to:

    SDL_Init(SDL_INIT_VIDEO);

Internally, SDL stores all the events waiting to be handled in an event queue. Using functions like `SDL_PollEvent` and `SDL_PeepEvents` you can observe and handle waiting input events.

The key to event handling in SDL is the SDL_Event union. The event queue itself is composed of a series of SDL_Event unions, one for each waiting event. SDL_Event unions are read from the queue with the `SDL_PollEvent` function and it is then up to the application to process the information stored with them.

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SDL_WM_GrabInput | Up | SDL Event Structures.