SDL_QuitEvent(3) SDL API Reference SDL_QuitEvent(3)NAME
SDL_QuitEvent - Quit requested event
STRUCTURE DEFINITION
typedef struct{
Uint8 type
} SDL_QuitEvent;
STRUCTURE DATA
type SDL_QUIT
DESCRIPTION
SDL_QuitEvent is a member of the SDL_Event union and is used whan an event of type SDL_QUIT is reported.
As can be seen, the SDL_QuitEvent structure serves no useful purpose. The event itself, on the other hand, is very important. If you filter
out or ignore a quit event then it is impossible for the user to close the window. On the other hand, if you do accept a quit event then
the application window will be closed, and screen updates will still report success event though the application will no longer be visible.
Note:
The macro SDL_QuitRequested will return non-zero if a quit event is pending
SEE ALSO
SDL_Event, SDL_SetEventFilter
SDL Tue 11 Sep 2001, 22:59 SDL_QuitEvent(3)
Check Out this Related Man Page
SDL_SetEventFilter(3) SDL API Reference SDL_SetEventFilter(3)NAME
SDL_SetEventFilter - Sets up a filter to process all events before they are posted to the event queue.
SYNOPSIS
#include "SDL.h"
void SDL_SetEventFilter(SDL_EventFilter filter);
DESCRIPTION
This function sets up a filter to process all events before they are posted to the event queue. This is a very powerful and flexible fea-
ture. The filter is prototyped as:
typedef int (*SDL_EventFilter)(const SDL_Event *event);
If the filter returns 1, then the event will be added to the internal queue. If it returns 0, then the event will be dropped from the
queue. This allows selective filtering of dynamically.
There is one caveat when dealing with the SDL_QUITEVENT event type. The event filter is only called when the window manager desires to
close the application window. If the event filter returns 1, then the window will be closed, otherwise the window will remain open if pos-
sible. If the quit event is generated by an interrupt signal, it will bypass the internal queue and be delivered to the application at the
next event poll.
Note:
Events pushed onto the queue with SDL_PushEvent or SDL_PeepEvents do not get passed through the event filter.
Note:
Be Careful! The event filter function may run in a different thread so be careful what you do within it.
SEE ALSO
SDL_Event, SDL_GetEventFilter, SDL_PushEvent
SDL Tue 11 Sep 2001, 22:59 SDL_SetEventFilter(3)
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