SDL Wiki
(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)


The prototype for the log output callback function.

Header File

Defined in SDL_log.h, but apps should use #include <SDL3/SDL.h>


typedef void (SDLCALL *SDL_LogOutputFunction)(void *userdata, int category, SDL_LogPriority priority, const char *message);

Function Parameters

userdata what was passed as userdata to SDL_SetLogOutputFunction()
category the category of the message
priority the priority of the message
message the message being output


This function is called by SDL when there is new text to be logged.


This datatype is available since SDL 3.0.0.

CategoryAPI, CategoryAPIDatatype

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