其實要實現這個很是容易,如下是自繪ListCtrl的代碼,首先繼承CListCtrl,
而後增長函數:html
void CProcessList::OnCustomDraw(NMHDR *pNMHDR, LRESULT *pResult) { //draw each item.set txt color,bkcolor.... NMLVCUSTOMDRAW* pLVCD = reinterpret_cast<NMLVCUSTOMDRAW*>(pNMHDR); // Take the default processing unless we set this to something else below. *pResult = CDRF_DODEFAULT; // First thing - check the draw stage. If it's the control's prepaint // stage, then tell Windows we want messages for every item. if (pLVCD->nmcd.dwDrawStage == CDDS_PREPAINT) { *pResult = CDRF_NOTIFYITEMDRAW; } else if (pLVCD->nmcd.dwDrawStage == CDDS_ITEMPREPAINT) { // This is the notification message for an item. We'll request // notifications before each subitem's prepaint stage. *pResult = CDRF_NOTIFYSUBITEMDRAW; } else if (pLVCD->nmcd.dwDrawStage == (CDDS_ITEMPREPAINT | CDDS_SUBITEM)) { // This is the prepaint stage for a subitem. Here's where we set the // item's text and background colors. Our return value will tell // Windows to draw the subitem itself, but it will use the new colors // we set here. int nItem = static_cast<int> (pLVCD->nmcd.dwItemSpec); int nSubItem = pLVCD->iSubItem; if(nSubItem != 2)//這裏我只重繪第二列 return; COLORREF crText = ::GetSysColor(COLOR_WINDOWFRAME); COLORREF crBkgnd = ::GetSysColor(COLOR_WINDOW); CDC* pDC = CDC::FromHandle(pLVCD->nmcd.hdc); CRect rect; GetSubItemRect(nItem, nSubItem, LVIR_BOUNDS, rect); if (GetItemState(nItem, LVIS_SELECTED)) DrawText(nItem, nSubItem, pDC, ::GetSysColor(COLOR_HIGHLIGHT), ::GetSysColor(COLOR_HIGHLIGHT), rect); else DrawText(nItem, nSubItem, pDC, crText, crBkgnd, rect); *pResult = CDRF_SKIPDEFAULT; // We've painted everything. } }
而後爲該函數增長消息映射:
ON_NOTIFY_REFLECT(NM_CUSTOMDRAW, OnCustomDraw)
最後咱們爲畫進度條而努力,這裏程序中把進度存在ItemData中。less
void CProcessList::DrawText(int nItem, int nSubItem, CDC *pDC, COLORREF crText, COLORREF crBkgnd, CRect &rect) { ASSERT(pDC); pDC->FillSolidRect(&rect, crBkgnd); int nProcess = GetItemData(nItem); CRect procRect = rect; pDC->Rectangle(procRect); procRect.left += 1; procRect.bottom -= 1; procRect.top += 1; procRect.right = procRect.left + rect.Width() * nProcess / 100; CBrush brush(RGB(255,0,0)); pDC->FillRect(&procRect, &brush); CString str; str.Format("%d%%", nProcess); if (!str.IsEmpty()) { UINT nFormat = DT_VCENTER | DT_SINGLELINE | DT_CENTER; pDC->SetBkMode(TRANSPARENT); pDC->SetTextColor(crText); pDC->SetBkColor(crBkgnd); pDC->DrawText(str, &rect, nFormat); } }
怎麼樣?很簡單吧,其實使用VC開發界面也很是迅速的,雖然仍是以爲MFC的封裝有JAVA界面庫封裝得那麼好該多好啊……函數