mostly trying to optimize and clarify ui_x11

Author: gwenhael-le-moine

src/ui.c

@@ -143,7 +143,7 @@ letter_t small_font[ 128 ] = {
 
 void ( *ui_disp_draw_nibble )( word_20 addr, word_4 val );
 void ( *ui_menu_draw_nibble )( word_20 addr, word_4 val );
-int ( *ui_get_event )( void );
+void ( *ui_get_event )( void );
 void ( *ui_update_LCD )( void );
 void ( *ui_refresh_LCD )( void );
 void ( *ui_adjust_contrast )( void );

src/ui.h

@@ -51,7 +51,7 @@ extern void ( *ui_menu_draw_nibble )( word_20 addr, word_4 val );
 /*****************************************/
 /* used in: emu_emulate.c */
 /*****************************************/
-extern int ( *ui_get_event )( void );
+extern void ( *ui_get_event )( void );
 extern void ( *ui_adjust_contrast )( void );
 extern void ( *ui_draw_annunc )( void );
 

src/ui_sdl.c

@@ -1734,7 +1734,7 @@ static void SDLCreateHP( void )
 /**********/
 /* public */
 /**********/
-int sdl_get_event( void )
+void sdl_get_event( void )
 {
     SDL_Event event;
     int hpkey;
@@ -1911,8 +1911,6 @@ int sdl_get_event( void )
         dispupdate_t1 = dispupdate_t2;
     }
 #endif
-
-    return 1;
 }
 
 void sdl_update_LCD( void )

src/ui_text.c

@@ -361,7 +361,7 @@ void text_draw_annunc( void )
 
 void text_adjust_contrast( void ) { text_update_LCD(); }
 
-int text_get_event( void )
+void text_get_event( void )
 {
     int hpkey = -1;
     uint32_t k;
@@ -553,8 +553,6 @@ int text_get_event( void )
         if ( !keyboard[ hpkey ].pressed )
             press_key( hpkey );
     }
-
-    return 1;
 }
 
 void text_ui_stop()