Cleaned up about dialog, fixed window centering

src/GameWindow.c

@@ -18,8 +18,6 @@ void GameWindow_Init(GameWindow *pGameWindow)
     }
     
     GameEngine_LoadLevel(&(pGameWindow->Engine), 0, false);
-    
-    CenterWindow(pGameWindow->Window);
 }
 
 void GameWindow_Draw(GameWindow *pGameWindow)

src/MacCommon.c

@@ -3,11 +3,6 @@
 
 #include "MacCommon.h"
 
-void CenterWindow(WindowPtr window)
-{
-    // TODO
-}
-
 void ShowError(Str255 message, Boolean isFatal)
 {
     ParamText(message, EmptyString, EmptyString, EmptyString);

src/MacCommon.h

@@ -12,8 +12,8 @@
 
 #define ErrorAlertResID BaseResID
 
-void CenterWindow(WindowPtr window);
-Boolean IsCompactDisplay();
+pascal OSErr SetDialogDefaultItem(DialogPtr theDialog, short newItem) = { 0x303C, 0x0304, 0xAA68 };
+
 void ShowError(Str255 message, Boolean isFatal);
 
 #endif

src/MacLO.c

@@ -180,6 +180,9 @@ void MacLO_ShowAboutDialog()
     dialog = GetNewDialog(AboutDialogResID, nil, MoveToFront);
     
     SetPort(dialog);
+    
+    SetDialogDefaultItem(dialog, AboutDialogOKID);
+    
     ShowWindow(dialog);
     
     ModalDialog(nil, &itemHit);