VC: 创建一个自绘制的CListCtrl控件

VC控件的CListCtrl可以被选择成Owner draw模式，这个模式下需要自己来画图标和文字。一个简单的DrawItem函数重载实现:[原创程序，转载请标明出处]

void CMyCtrlList::DrawItem( LPDRAWITEMSTRUCT lpDrawItemStruct )
{
    int  nItem = lpDrawItemStruct->itemID;
    CRect rcItem;
    GetItemRect( nItem, rcItem, LVIR_LABEL );
    rcItem.left += 2;

    LV_ITEM lvi;
    lvi.mask      = LVIF_STATE | LVIF_IMAGE;
    lvi.iItem     = nItem;
    lvi.iSubItem  = 0;
    lvi.stateMask = 0xFFFF;
    VERIFY( GetItem( &lvi ) );

    UINT nFormat = DT_SINGLELINE | DT_NOPREFIX | DT_VCENTER;
    nFormat |= DT_LEFT; // Justify
    CDC* pDC = CDC::FromHandle( lpDrawItemStruct->hDC );
    BOOL fFocus = ( GetFocus() == this );
    CString sText ( CListCtrl::GetItemText( nItem, 0 ) );
    if( lvi.state & LVIS_FOCUSED )
    {
        CBrush brush;
        if( fFocus )
        {
            brush.CreateSolidBrush( GetSysColor( COLOR_HIGHLIGHT ) );
        }
        else
        {
            brush.CreateSolidBrush( GetSysColor( COLOR_INACTIVECAPTIONTEXT ) );
        }
        CBrush* pOldBrush = static_cast<CBrush*>( pDC->SelectObject( brush ) );
        pDC->FillRect( rcItem, &brush );
        pDC->SelectObject( pOldBrush );

        if( fFocus )
        {
            COLORREF colorRef = pDC->SetTextColor( GetSysColor( COLOR_HIGHLIGHTTEXT ) );
            pDC->DrawText( sText, -1, &rcItem, nFormat );
            pDC->SetTextColor( colorRef );
        }
        else // We have 3 execution path, so need 2 boolean split.
        {    // So this else is not redundant.
            pDC->DrawText( sText, -1, &rcItem, nFormat );
        }
    }
    else
    {
        pDC->DrawText( sText, -1, &rcItem, nFormat );
    }
    CRect rcImage;
    GetSubItemRect( lpDrawItemStruct->itemID, 0, LVIR_ICON, rcImage );
    CImageList *pImageList = GetImageList( LVSIL_SMALL );
    if( pImageList )
    {
        COLORREF colorRef = {0};
        UINT nStyle = ILD_NORMAL;
        BOOL fFocusAndSelect = ( lvi.state & LVIS_FOCUSED ) && fFocus;
        if( fFocusAndSelect )
        {
            nStyle = ILD_SELECTED | ILD_TRANSPARENT;
            colorRef = pImageList->SetBkColor( GetSysColor( COLOR_HIGHLIGHT ) );
        }
        IMAGEINFO imageinfo;
        if( pImageList->GetImageInfo( lvi.iImage, &imageinfo ) )
        {
            pImageList->DrawIndirect(
                pDC,
                lvi.iImage,
                CPoint( rcImage.left, rcImage.top ),
                CSize( imageinfo.rcImage.right - imageinfo.rcImage.left, imageinfo.rcImage.bottom - imageinfo.rcImage.top ),
                CPoint( 0, 0 ),
                nStyle );
        }
        if( fFocusAndSelect )
        {
            pImageList->SetBkColor( colorRef );
        }
    }
}