diff options
Diffstat (limited to 'textscreen/txt_desktop.h')
| -rw-r--r-- | textscreen/txt_desktop.h | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/textscreen/txt_desktop.h b/textscreen/txt_desktop.h index 42a011e7..4b6bd4b5 100644 --- a/textscreen/txt_desktop.h +++ b/textscreen/txt_desktop.h @@ -30,6 +30,8 @@ #include "txt_window.h" +typedef void (*TxtIdleCallback)(void *user_data); + void TXT_AddDesktopWindow(txt_window_t *win); void TXT_RemoveDesktopWindow(txt_window_t *win); void TXT_DrawDesktop(void); @@ -72,6 +74,21 @@ void TXT_GUIMainLoop(void); txt_window_t *TXT_GetActiveWindow(void); -#endif /* #ifndef TXT_DESKTOP_H */ +/** + * Set a callback function to be invoked periodically by the main + * loop code. + * + * @param callback The callback to invoke, or NULL to cancel + * an existing callback. + * @param user_data Extra data to pass to the callback. + * @param period Maximum time between invoking each callback. + * eg. a value of 200 will cause the callback + * to be invoked at least once every 200ms. + */ + +void TXT_SetPeriodicCallback(TxtIdleCallback callback, + void *user_data, + unsigned int period); +#endif /* #ifndef TXT_DESKTOP_H */ |