Some of the work is done on getting the window title thing working

4ed.cpp

@@ -193,7 +193,11 @@ struct Command_Data{
     System_Functions *system;
     Live_Views *live_set;
     
-    i32 screen_width, screen_height;
+    i32 screen_width;
+    i32 screen_height;
+    
+    Application_Step_Result *step_result;
+    
     Key_Event_Data key;
 };
 
@@ -1423,6 +1427,8 @@ App_Init_Sig(app_init){
     cmd->system = system;
     cmd->live_set = &models->live_set;
     
+    cmd->step_result = &app_result;
+    
     cmd->screen_width = target->width;
     cmd->screen_height = target->height;
     
@@ -1704,11 +1710,14 @@ App_Step_Sig(app_step){
     cmd->system = system;
     cmd->live_set = &models->live_set;
     
+    cmd->step_result = &app_result;
+    
     cmd->screen_width = target->width;
     cmd->screen_height = target->height;
     
     cmd->key = null_key_event_data;
     
+    // NOTE(allen): First frame initialization
     if (input->first_step){
         // Open command line files.
         char space[512];

4ed.h

@@ -94,6 +94,8 @@ struct Application_Step_Result{
     b32 trying_to_kill;
     b32 perform_kill;
     b32 animating;
+    b32 has_new_title;
+    char *title_string;
 };
 
 struct Application_Step_Input{

4ed_api_implementation.cpp

@@ -2833,8 +2833,7 @@ DOC_PARAM(title, A null terminated string indicating the new title for the 4code
 DOC(Sets 4coder's window title to the specified title string.)
 */{
     Command_Data *cmd = (Command_Data*)app->cmd_context;
-    System_Functions *system = cmd->system;
+    
-    system->set_title(title);
 }
 
 // BOTTOM

4ed_system.h

@@ -212,9 +212,6 @@ typedef Sys_Is_Fullscreen_Sig(System_Is_Fullscreen);
 #define Sys_Send_Exit_Signal_Sig(name) void name()
 typedef Sys_Send_Exit_Signal_Sig(System_Send_Exit_Signal);
 
-#define Sys_Set_Title_Sig(n,t) void n(char *t)
-typedef Sys_Set_Title_Sig(System_Set_Title, title);
-
 // debug
 #define Sys_Log_Sig(name) void name(char *message, u32 length)
 typedef Sys_Log_Sig(System_Log);
@@ -277,7 +274,6 @@ struct System_Functions{
     System_Set_Fullscreen         *set_fullscreen;
     System_Is_Fullscreen          *is_fullscreen;
     System_Send_Exit_Signal       *send_exit_signal;
-    System_Set_Title              *set_title;
     
     // debug: 1
     System_Log *log;

platform_mac/mac_4ed.cpp

@@ -191,11 +191,6 @@ Sys_Send_Exit_Signal_Sig(system_send_exit_signal){
     osxvars.keep_running = false;
 }
 
-internal
-Sys_Set_Title_Sig(system_set_title, title){
-    osx_change_title(title);
-}
-
 #include "4ed_coroutine_functions.cpp"
 
 #include "4ed_system_shared.cpp"
@@ -642,6 +637,11 @@ osx_step(void){
         osxvars.keep_running = true;
     }
     
+    // NOTE(allen): Switch to New Title
+    if (result.has_new_title){
+        osx_change_title(result.title_string);
+    }
+    
     // NOTE(allen): Switch to New Cursor
     osx_show_cursor(0, result.mouse_cursor_type);