delete and clear all items in combobox win32 api

Question

I'm building a windows application, and I have this combobox refusing to get clean. I want the combo box items to be deleted between one button click to another. I tried :

SendDlgItemMessage(hWnd, IDC_LIST_COMMANDS, CB_RESETCONTENT, 0, 0);

and also:

SendMessage(CommandsListBox, CB_RESETCONTENT, 0, 0);

but none of them work. I dont get 0 when I call LB_GETCOUNT after one of the above calls.

        case SOME_EVENT:

            ProfileHandler.IdentityIndex = (int)SendMessage(ProfilesCombo, 
CB_GETCURSEL, 0, 0);
            SendMessage(ProfilesCombo, CB_GETLBTEXT, 
(WPARAM)ProfileHandler.stringIndex, (LPARAM)ProfileHandler.string);
            if (ProfileHandler.IdentityIndex == -1) {
                MessageBox(hWnd, "Invalid !", "Error !", MB_OK);
                break;
            }

            StringsSet.clear();
            if (fuc.GetStrings(string(ProfileHandler.string), &StringsSet) 
== SERVER_ERROR) {
                MessageBox(hWnd, "Error Loading strings", "Error !", MB_OK);
                break;
            }

            SendMessage(CommandsListBox, CB_RESETCONTENT, 0, 0); // reset 
content before writing strings
            it = StringsSet.begin();
            for (; it != StringsSet.end(); ++it)
            {
                    (int)SendMessage(CommandsListBox, LB_ADDSTRING, 0,
(LPARAM)(*it).c_str());
            }
            break;

so, I between every SOME_EVENT received by click, I want to clear the combobox, and load the string again. right now what's happenning is that every time I click the button, and the SOME_EVENT event received, I just load the commands all over again, causing a duplication . any idea how to solve this??

Answer 1

I just wrote code that resets all items into a ComboBox. The correct way is to use: SendMessage(hcombobox, CB_RESETCONTENT, 0, 0); I write this because the problem was that the user that started this thread was using a ListView and not a ComboBox. Jonathan Potter solved this issue. I've written this to give visibility to the correct answer. Forgive my mistakes.