###### (This is the documentation for SDL3, which is under heavy development and the API is changing! [SDL2](https://wiki.libsdl.org/SDL2/) is the current stable version!) ## Draft **THIS PAGE IS A WORK IN PROGRESS** ... Please make edits to this page to improve it! # SDL_SetWindowsMessageHook Set a callback for every Windows message, run before TranslateMessage(). ## Header File Defined in [SDL_system.h](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_system.h), but apps should use `#include ` ## Syntax ```c void SDL_SetWindowsMessageHook(SDL_WindowsMessageHook callback, void *userdata); ``` ## Function Parameters | | | | ---------------- | ---------------------------------------------------------------------- | | **callback** | The [SDL_WindowsMessageHook](SDL_WindowsMessageHook) function to call. | | **userdata** | a pointer to pass to every iteration of `callback` | ## Remarks The callback may modify the message, and should return [SDL_TRUE](SDL_TRUE) if the message should continue to be processed, or [SDL_FALSE](SDL_FALSE) to prevent further processing. ## Version This function is available since SDL 3.0.0. ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategorySystem](CategorySystem), [CategoryDraft](CategoryDraft)