[Dev-C++] [WinAPI]owner drawn listbox

[tichy <ti...@po...>]

Hi!
Please take look at this:

g_hwndLBSG =3D CreateWindowEx(WS_EX_CLIENTEDGE,WC_LISTBOX, "",
        WS_CHILD | LBS_OWNERDRAWVARIABLE | LBS_HASSTRINGS | LBS_NOTIFY |
WS_VSCROLL | LBS_DISABLENOSCROLL,
        530, 50, 80, 300,
        g_hwndMain, (HMENU)ID_LBSG, g_hinst, NULL);


        case ID_butAddSG:
             {//list LB with image path is selected, bitmap displayed in =
a
preview control, button AddSG pressed to add bitmap to listbox LBSG
             int sel,nItem;

             sel=3DSendMessage(g_hwndLB, LB_GETCURSEL,0,0);
             ImageList_Add(g_hlstSG, g_bmp, NULL);
             ImageList_GetImageInfo(g_hlstSG, 0, &ii);
             SendMessage(g_hwndLB, LB_GETTEXT, (WPARAM)sel,
(LPARAM)g_achTemp);
             nItem =3D SendMessage(g_hwndLBSG, LB_ADDSTRING, 0,
(LPARAM)g_achTemp);
             SendMessage(g_hwndLBSG, LB_SETITEMDATA, nItem, (LPARAM)g_bmp=
/*
ii.hbmImage */);
             SendMessage(g_hwndLBSG, LB_SETCURSEL, 0, 0);

             }
        break;
................................
        case WM_DRAWITEM:
        {

      if ((int)wParam =3D=3D ID_LBSG) {
         MessageBox(g_hwndMain,"ID_LBSG", "",MB_OK);
         if(lpDis->CtlType=3D=3DNULL)MessageBox(g_hwndMain,"ODT_ NULL!?",
"",MB_OK);
       switch (lpDis->itemAction) {

MessageBox(g_hwndMain,"itemAction", "",MB_OK);
                case ODA_DRAWENTIRE:

MessageBox(g_hwndMain,"drawentire", "",MB_OK);
...and so on ...

After I get message "ID_LBSG" (what is ok) I get message "ODT_NULL!?" wha=
t
means, that DRAWITEM structure is not filled. WHY?   =3D8O
--
Regards,
Andrzej Kry=F1ski
http:\\tichy.fm.interia.pl



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Baza sygnatur wirusow (VPS): 0510-1, 2005-03-11
Przetestowano na: 2005-03-11 19:59:55
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