VScroll not quite working

Ok, this is starting to annoy me. I've looked at two different examples (MSDN and petzold) of a scrollbar control and handling the WM_VSCROLL and I still can't get the damn box on the bar to reposition itself when I drag it. I realize it's not moving the box when I click anywhere else either, but it's giving the desired effect anyway; at least that tells me I'm processing the right message. One example I saw used SB_THUMBTRACK and one used SB_THUMBPOSITION. Which do I want to process, or both?

p.s. Unless there's a way to force a scrollbar to appear on a listview, don't knock my implementation. It'll suit my purpose. I just want to know how to make the bloody box move, please.

Code:

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    SCROLLINFO si;
    si.cbSize = sizeof(si);
    si.fMask  = SIF_RANGE | SIF_PAGE;
    si.nMin  = 0;
    si.nMax  = MaxResNum;
    si.nPage  = SendMessage(hResList,LVM_GETCOUNTPERPAGE,0,0);
    SetScrollInfo(hResScroll, SB_VERT, &si, TRUE);

---

Code:

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        case WM_VSCROLL:
        {
            if (((HWND)lParam != hResScroll) || (!(ResultsList))) { break; }
            int PageSize = SendMessage(hResList,LVM_GETCOUNTPERPAGE,0,0);
            SCROLLINFO si;
            si.cbSize = sizeof(si);
            si.fMask  = SIF_ALL;
            GetScrollInfo (hResScroll, SB_VERT, &si);
            switch(LOWORD(wParam))
            {
                case SB_LINEDOWN:
                {
                    CurrResNum = ShowResPage(CurrResNum + 1);
                } break;
                case SB_PAGEDOWN:
                {
                    CurrResNum = ShowResPage(CurrResNum + PageSize);
                } break;
                case SB_LINEUP:
                {
                    CurrResNum = ShowResPage(CurrResNum - 1);
                } break;
                case SB_PAGEUP:
                {
                    CurrResNum = ShowResPage(CurrResNum - PageSize);
                } break;
                case SB_THUMBTRACK:
                {
                    si.fMask = SIF_POS;
                    si.nPos += 1;
                    SetScrollInfo (hwnd, SB_VERT, &si, TRUE);
                    CurrResNum = ShowResPage(si.nPos);
                } break;
                default: return FALSE;
            }

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Quote:

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Originally Posted by Viper187

Which do I want to process, or both?

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Both. They do two different things. One is for one when someone moves the scroll thingy. The other is for one someone is clicking the buttons or outside the scroll-a-majig.

I'm still getting nothing. The button on the bar won't even move up/down when I click the arrows. What am I doing wrong???

Code:

---

        case WM_VSCROLL:
        {
            if (((HWND)lParam != hResScroll) || (!(ResultsList))) { break; }
            int PageSize = SendMessage(hResList,LVM_GETCOUNTPERPAGE,0,0);
            SCROLLINFO si;
            si.cbSize = sizeof(SCROLLINFO);
            si.fMask  = SIF_ALL;
            GetScrollInfo (hResScroll, SB_VERT, &si);
            switch(LOWORD(wParam))
            {
                case SB_LINEDOWN:
                {
                    si.nPos += 1;
                    CurrResNum = ShowResPage(CurrResNum + 1);
                } break;
                case SB_PAGEDOWN:
                {
                    si.nPos += si.nPage;
                    CurrResNum = ShowResPage(CurrResNum + PageSize);
                } break;
                case SB_LINEUP:
                {
                    si.nPos -= 1;
                    CurrResNum = ShowResPage(CurrResNum - 1);
                } break;
                case SB_PAGEUP:
                {
                    si.nPos -= si.nPage;
                    CurrResNum = ShowResPage(CurrResNum - PageSize);
                } break;
                case SB_THUMBTRACK:
                {
                    si.nPos = si.nTrackPos;
                } break;
                default: break;
            }
            si.fMask = SIF_POS;
            SetScrollInfo (hResScroll, SB_VERT, &si, TRUE);

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Ok, a week later I still didn't figure out my problem. Why doesn't it work!?

Sorry Viper187. I know sometimes the mods get ........ed, but in the future just bump the thread sooner. Sometimes I just miss them because I accidentally mark all the forums as read.

Quote:

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Originally Posted by M$DN

WM_VSCROLL

The high-order word specifies the current position of the scroll box if the low-order word is SB_THUMBPOSITION or SB_THUMBTRACK; otherwise, this word is not used.

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You need to actually check which is occuring, bud.

I tried. It doesn't work. I can't ever get that stupid box to move.