win32 sdk 列表视图控件绘制

[cpp] view plaincopy

 

//////////////////////////////////////////////////////////////
LRESULT ListViewCustomDraw(HWND hwnd, LPARAM lParam)
{
    LPNMHDR pnmh = (LPNMHDR) lParam;

    if (pnmh->code != NM_CUSTOMDRAW) return 0;

    LPNMLVCUSTOMDRAW lpNMCustomDraw = (LPNMLVCUSTOMDRAW) lParam;

    int nResult = CDRF_DODEFAULT;

    if (CDDS_PREPAINT == lpNMCustomDraw->nmcd.dwDrawStage)
    {
        nResult = CDRF_NOTIFYITEMDRAW;
    }
    else if (CDDS_ITEMPREPAINT == lpNMCustomDraw->nmcd.dwDrawStage)
    {
        nResult = CDRF_NOTIFYSUBITEMDRAW;
    }
    else if ((CDDS_ITEMPREPAINT | CDDS_SUBITEM) == lpNMCustomDraw->nmcd.dwDrawStage)
    {
        nResult = CDRF_SKIPDEFAULT;

        const DWORD dwStyle = DT_LEFT | DT_SINGLELINE | DT_VCENTER | DT_NOPREFIX | DT_END_ELLIPSIS;

        HDC hdc = lpNMCustomDraw->nmcd.hdc;
        SetBkMode(hdc,TRANSPARENT);
        int nItem = (int)lpNMCustomDraw->nmcd.dwItemSpec;
        int nSubItem = lpNMCustomDraw->iSubItem;

        BOOL bItemSelected = ListView_GetItemState(hwnd, nItem, LVIS_SELECTED);

        RECT subItemRect;
        ListView_GetSubItemRect(hwnd, nItem, nSubItem, LVIR_BOUNDS, &subItemRect);
//
        HBRUSH brsh=0;
        if (bItemSelected)
        {   //OutputDebugString("bItemSelected\n");
            brsh=CreateSolidBrush(RGB(255, 128, 128));//yellow
            FillRect(hdc, &subItemRect,brsh);
        }
        else
        {// not Selected
            brsh=CreateSolidBrush(RGB(51+nItem*30, 153, 255-nItem*30));
            FillRect(hdc, &subItemRect,brsh);
        }
        if(brsh) DeleteObject(brsh);
//
        TCHAR szText[260];
        ListView_GetItemText(hwnd, nItem, nSubItem, szText, 260);
        DrawText(hdc, szText, strlen(szText), &subItemRect, dwStyle);
    }
    return nResult;
}

 

关键：
else
{// not Selected
brsh=CreateSolidBrush(RGB(51+nItem*30, 153, 255-nItem*30));
FillRect(hdc, &subItemRect,brsh);
}