Populating a List Box

[Paul6151]

Hello!

I am using IsntallScript MSI Project.
I want to fill a listbox for Language select, but i get this NULL error:
here's my code:

listLanguage = CreateLanguageList();
   if (listLanguage = LIST_NULL) then 
        MessageBox ("Unable to create list of languages", SEVERE); 
        abort; 
   endif;

which calls this procedure:

function CreateLanguageList() 
  LIST listLanguage; 
begin 
  listLanguage = ListCreate (STRINGLIST); 

  if (listLanguage != LIST_NULL) then 
    ListAddString (listLanguage, "English (GB)", AFTER); 
    ListAddString (listLanguage, "English (US)", AFTER); 
    ListAddString (listLanguage, "Deutsch", AFTER); 
  endif; 

  return listLanguage; 
end; 

what's missing then?

[Paul6151]

i think the problem is in CtrlSetList:

nResult = CtrlSetList (szDialogName, SD_DLG_SEL_LANG_LIST, listLanguage); 
      
   if (nResult != 0) then 
		// Handle error from CtrlSetList. 
		MessageBox ("Unable to create folder name list.", SEVERE); 
		bDone = FALSE; //TRUE; 
   else  

[Paul6151]

Does anyone familiar with this problem?

better yet, if you have made a successful use of CtrlSetList, can you teach us how, and maybe post the code? i saw the same problem on other resources too. This should work.

by the way, i am working with InstallScript MSI (IS 2010)

[RobertDickau]

Where are you calling CtrlSetList? In the DLG_INIT case of a custom dialog's code?

[Paul6151]

it worked in DLG_INIT!
thank you!

what i want to achieve now is to preserve the selected item.
right now, if i select "German" for the language, and i click Next that goes to another dialog. if i click "Back" on that dialog, it goes back to the language dialog but the selected item goes back to the default which is "English" in this case. It should still be "German"