why does CListCtrl.InsertItem return -1?

[Trucker]

Hello, I am having a weird problem with a list view control (CListCtrl) in MFC. I can create it but for some reason I can't add an item to it. When I call the controls InsertItem function, it returns -1, which according to the MFC documentation means that adding the item to the list view was unsuccessful. I know this from running this code: //creating listview folderContents.Create(WS_VISIBLE|WS_CHILD|WS_BORDER| LVS_LIST|LVS_SINGLESEL, CRect(10,10,300,180), this, IDC_FOLDERCONTENTS); LV_ITEM lvItem; lvItem.mask = LVIF_TEXT|LVIF_STATE; lvItem.state = 0; lvItem.stateMask = 0; lvItem.pszText = "an item"; lvItem.iItem = 0; //add the item to the listview. If unsuccessful //then change background color of the list view if(folderContents.InsertItem(&lvItem) == -1) { COLORREF c = PALETTERGB(150, 90, 130); folderContents.SetBkColor(c); } When I run the application, backgound color of the list view (named folderContents in above code) is changed. So why cant InsertItem add an item to the list view? There is no explanation in the documentation. Anybody know?:confused: TraileR ParK LifE 4Ever

[Christian Graus]

The LV_ITEM structure contains a lot of info apart from what you're specifying, and it's all full of random data when you create one. If you add this line: ::memset(&lvItem, 0, sizeof(LV_ITEM)); before setting any values, it works ( I just tried it :-) ) Christian Graus - Microsoft MVP - C++

[Trucker]

Wow! Thanks a lot! I did not know about this function.:rolleyes: TraileR ParK LifE 4Ever