(This is the documentation for SDL3, which is the current stable version. SDL2 was the previous version!)

SDL_X11EventHook

A callback to be used with SDL_SetX11EventHook.

Header File

Defined in <SDL3/SDL_system.h>

Syntax

typedef bool (SDLCALL *SDL_X11EventHook)(void *userdata, XEvent *xevent);

Function Parameters

userdata	the app-defined pointer provided to SDL_SetX11EventHook.
xevent	a pointer to an Xlib XEvent union to process.

Return Value

Returns true to let event continue on, false to drop it.

Remarks

This callback may modify the event, and should return true if the event should continue to be processed, or false to prevent further processing.

As this is processing an event directly from the X11 event loop, this callback should do the minimum required work and return quickly.

Thread Safety

This may only be called (by SDL) from the thread handling the X11 event loop.

Version

This datatype is available since SDL 3.1.3.

See Also

• SDL_SetX11EventHook

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CategoryAPI, CategoryAPIDatatype, CategorySystem

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