win32 sdk繪製ListBox控件

1》產生：

 

//
HWND CreateLB(HWND parentWnd)
{
    HWND hListBox=0;
    hListBox = CreateWindow("LISTBOX",
                NULL,
                WS_CHILD|WS_VSCROLL | WS_TABSTOP | LBS_STANDARD | LBS_OWNERDRAWFIXED | LBS_HASSTRINGS,
                230, 20, 60, 80,
                parentWnd, (HMENU)IDC_LISTBOX,
                (HINSTANCE) GetWindowLong(parentWnd, GWL_HINSTANCE),
                NULL);
                ShowWindow(hListBox,SW_SHOW);
                SendMessage(hListBox,LB_ADDSTRING ,0,(LPARAM)"你好");
                SendMessage(hListBox,LB_ADDSTRING ,0,(LPARAM)"我好");
                SendMessage(hListBox,LB_ADDSTRING ,0,(LPARAM)"他好");
//
    return hListBox;
}

2》指定size：

 

case WM_MEASUREITEM://ODT_LISTBOX
    if((UINT) wParam==IDC_LISTBOX)
    {
        LPMEASUREITEMSTRUCT lpmis = (LPMEASUREITEMSTRUCT) lParam;
        lpmis->itemWidth=400;
        lpmis->itemHeight=22;
    }
    break;

3》畫：

 

case WM_DRAWITEM:

    if((UINT) wParam==IDC_LISTBOX)
    {
        LPDRAWITEMSTRUCT pDI=(LPDRAWITEMSTRUCT) lParam;
        HBRUSH brsh=CreateSolidBrush(RGB(255-30*pDI->itemID, 128+40*pDI->itemID, 128+40*pDI->itemID));//yellow
        FillRect(pDI->hDC,&pDI->rcItem,brsh);
        DeleteObject(brsh);
        // text
        SetBkMode(pDI->hDC,TRANSPARENT);
        char szText[260];
        SendMessage(m_hListBox,LB_GETTEXT,pDI->itemID,(LPARAM)szText);
        const DWORD dwStyle = DT_LEFT | DT_SINGLELINE | DT_VCENTER | DT_NOPREFIX | DT_END_ELLIPSIS;
        DrawText(pDI->hDC, szText, strlen(szText), &pDI->rcItem, dwStyle);
    }
break;

4》要點：| LBS_OWNERDRAWFIXED | LBS_HASSTRINGS,