场景在使用Win32/WTL虚拟列表时有时候底层短时间内接收到批量的数据之后需要更新到列表。这时如果只用SetItemCount更新列表时更新的越频繁列表就会越闪烁。这样给用户的体验就会比较差怎么解决闪烁的问题说明虚拟列表[5]主要是用来大数据的显示卡顿问题。 但现在使用SetItemCount增加行数时会频繁刷新列表可见区域如果可见区域有自定义的图片区域那么刷新图片会有明显的闪烁问题。 这个虚拟列表已经有解决方案使用SetItemCountEx或者ListView_SetItemCountEx函数并传递LVSICF_NOINVALIDATEALL | LVSICF_NOSCROLL参数。LVSICF_NOINVALIDATEALL:除非受影响的项目当前处于视图中否则列表视图控件不会重新绘出。 即当前通过SetItemCountEx添加的行数刚好在列表的可见区域中,那么就会刷新。LVSICF_NOSCROLL: 当项计数发生更改时列表视图控件不会更改滚动位置。 即当前你滚动到4-10行调用SetItemCountEx会影响当前的列表可见的行数4-10行, 只会滑块变小。因此项目中把SetItemCount替换为SetItemCountEx, 即不会闪烁也提供性能。listview_.SetItemCountEx(photos_.size(),LVSICF_NOINVALIDATEALL|LVSICF_NOSCROLL);listview_.SetItemCountEx(photos_.size(),LVSICF_NOINVALIDATEALL|LVSICF_NOSCROLL);例子View.h// View.h : interface of the CView class///////////////////////////////////////////////////////////////////////////////#pragmaonce#includeutility#includestring#includevector#includememory#includeatlmisc.h#includeatlctrls.h#includeatlctrlx.h#includeGdiPlus.husingnamespacestd;enum{kMyButtonIdWM_USER1,kMyButtonId2,kMyButtonId3,kMyListViewId};classPhoto{public:wstring name;wstring createDate;wstring path;wstring format;};classCView:publicCWindowImplCView{public:DECLARE_WND_CLASS(NULL)BOOLPreTranslateMessage(MSG*pMsg);BEGIN_MSG_MAP_EX(CView)MSG_WM_CREATE(OnCreate)MESSAGE_HANDLER(WM_PAINT,OnPaint)NOTIFY_HANDLER(kMyListViewId,NM_CLICK,OnNMClickListResult)NOTIFY_HANDLER(kMyListViewId,LVN_GETDISPINFO,OnGetListViewData)NOTIFY_HANDLER(kMyListViewId,LVN_ODCACHEHINT,OnPrepareListViewData)NOTIFY_HANDLER(kMyListViewId,LVN_ODFINDITEM,OnFindListViewData)COMMAND_RANGE_HANDLER_EX(kMyButtonId,kMyButtonId3,OnCommandIDHandlerEX)MSG_WM_TIMER(OnTimer)REFLECT_NOTIFICATIONS()END_MSG_MAP()protected:// Handler prototypes (uncomment arguments if needed):// LRESULT MessageHandler(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL /*bHandled*/)// LRESULT CommandHandler(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL /*bHandled*/)// LRESULT NotifyHandler(int /*idCtrl*/, LPNMHDR /*pnmh*/, BOOL /*bHandled*/)intOnCreate(LPCREATESTRUCT lpCreateStruct);LRESULTOnPaint(UINT/*uMsg*/,WPARAM/*wParam*/,LPARAM/*lParam*/,BOOL/*bHandled*/);voidUpdateLayout();LRESULTOnNMClickListResult(intidCtrl,LPNMHDR pnmh,BOOLbHandled);LRESULTOnGetListViewData(intidCtrl,LPNMHDR pnmh,BOOLbHandled);LRESULTOnPrepareListViewData(intidCtrl,LPNMHDR pnmh,BOOLbHandled);LRESULTOnFindListViewData(intidCtrl,LPNMHDR pnmh,BOOLbHandled);voidOnCommandIDHandlerEX(UINT uNotifyCode,intnID,CWindow wndCtl);voidReloadMockData();voidReloadListView();voidOnTimer(UINT_PTR nIDEvent);private:std::wstringGetControlText(HWND hwnd,wchar_t*bufNULL);CListViewCtrl listview_;vectorshared_ptrPhoto*photos_;CFont font_normal_;CFont font_bold_;CBrushHandle brush_white_;CBrushHandle brush_hollow_;CBrush brush_red_;CButton buttonReloadMockData_;CButton buttonReloadListView_;CButton buttonDeleteListViewOneRow_;};View.cpp// View.cpp : implementation of the CView class///////////////////////////////////////////////////////////////////////////////#includestdafx.h#includeresource.h#includeutility#includesstream#includestdint.h#includeassert.h#includeStrsafe.h#includerandom#includeView.h#includeCommCtrl.h#includestring#includeregexusingnamespacestd;BOOLCView::PreTranslateMessage(MSG*pMsg){returnFALSE;}LRESULTCView::OnPaint(UINT/*uMsg*/,WPARAM/*wParam*/,LPARAM/*lParam*/,BOOL/*bHandled*/){CPaintDCdc(m_hWnd);CMemoryDCmdc(dc,dc.m_ps.rcPaint);CRect rect_client;GetClientRect(rect_client);mdc.FillSolidRect(rect_client,RGB(255,255,255));//TODO: Add your drawing code herereturn0;}staticHFONTGetFont(intpixel,boolbold,constwchar_t*font_name){LOGFONT lf;memset(lf,0,sizeof(LOGFONT));// zero out structurelf.lfHeightpixel;// request a 8-pixel-height fontif(bold){lf.lfWeightFW_BOLD;}lstrcpy(lf.lfFaceName,font_name);// request a face name ArialHFONT font::CreateFontIndirect(lf);returnfont;}std::wstringCView::GetControlText(HWND hwnd,wchar_t*buf){autolength::GetWindowTextLength(hwnd);boolbufNullfalse;if(!buf){bufnewwchar_t[length1]();bufNulltrue;}::GetWindowText(hwnd,buf,length1);std::wstringstr(buf);if(bufNull)delete[]buf;returnstr;}staticstd::wstringGetProductBinDir(){staticwchar_tszbuf[MAX_PATH];GetModuleFileName(NULL,szbuf,MAX_PATH);PathRemoveFileSpec(szbuf);intlengthlstrlen(szbuf);szbuf[length]L\\;szbuf[length1]0;returnstd::wstring(szbuf);}inttoRandInt(intmin,intmax){// thread_local 修饰符的变量只初始化一次,每个线程一个gen,避免多线程调用同一个gen导致数据竞争。// 使用minstd_rand生成性能高简单的可预测的随机数。// 使用mt19937 生成性能稍低很难预测的随机数。//thread_local std::mt19937 gen(std::random_device{}());thread_localstd::minstd_randgen(std::random_device{}());std::uniform_int_distributiondist(min,max);returndist(gen);}LRESULTCView::OnGetListViewData(intidCtrl,LPNMHDR pnmh,BOOLbHandled){NMLVDISPINFO*plvdi(NMLVDISPINFO*)pnmh;autoiItemplvdi-item.iItem;if(-1iItem)return0;autocountphotos_.size();if(!count||countiItem)return0;autophotophotos_[iItem];if(plvdi-item.maskLVIF_TEXT){switch(plvdi-item.iSubItem){case0:{autovalueto_wstring((int64_t)iItem1);StringCchCopy(plvdi-item.pszText,plvdi-item.cchTextMax,value.c_str());break;}case1:{autovaluephoto-get()-nameL-to_wstring(toRandInt(1,100));StringCchCopy(plvdi-item.pszText,plvdi-item.cchTextMax,value.c_str());break;}case2:StringCchCopy(plvdi-item.pszText,plvdi-item.cchTextMax,photo-get()-format.c_str());break;case3:StringCchCopy(plvdi-item.pszText,plvdi-item.cchTextMax,photo-get()-createDate.c_str());break;}}return0;}LRESULTCView::OnPrepareListViewData(intidCtrl,LPNMHDR pnmh,BOOLbHandled){return0;}LRESULTCView::OnFindListViewData(intidCtrl,LPNMHDR pnmh,BOOLbHandled){LPNMLVFINDITEM pnmfi(LPNMLVFINDITEM)pnmh;autoiItempnmfi-iStart;if(-1iItem)return-1;autocountphotos_.size();if(!count||countiItem)return-1;return0;}LRESULTCView::OnNMClickListResult(intidCtrl,LPNMHDR pnmh,BOOLbHandled){return0;}voidCView::OnCommandIDHandlerEX(UINT uNotifyCode,intnID,CWindow wndCtl){switch(nID){casekMyButtonId:{ReloadMockData();break;}casekMyButtonId2:{ReloadListView();MessageBox(L刷新表格数据完成);break;}casekMyButtonId3:{std::vectorintrows;intiItem-1;while((iItemlistview_.GetNextItem(iItem,LVNI_SELECTED))!-1)rows.push_back(iItem);if(rows.empty())break;for(intirows.size()-1;i0;--i)photos_.erase(photos_.begin()rows.at(i));listview_.SetItemCountEx(photos_.size(),LVSICF_NOINVALIDATEALL|LVSICF_NOSCROLL);MessageBox(L已删除);break;}}}voidCView::ReloadListView(){listview_.SetItemCount(0);for(autoi0;iphotos_.size();i)deletephotos_[i];photos_.clear();}voidCView::OnTimer(UINT_PTR nIDEvent){staticintconstkMaxCount200;staticintindex0;staticintcount0;if(countkMaxCount){count0;index0;KillTimer(nIDEvent);MessageBox(L刷新模拟数据完成);return;}wchar_tbuf[MAX_PATH]{0};LVCOLUMN co;memset(co,0,sizeof(co));co.maskLVCF_TEXT;co.pszTextbuf;co.cchTextMaxMAX_PATH;listview_.GetColumn(1,co);std::wstringc0Text(buf);listview_.GetColumn(2,co);std::wstringc1Text(buf);listview_.GetColumn(3,co);std::wstringc2Text(buf);for(inti0;i500countkMaxCount;i,index){autophotonewPhoto();wsprintf(buf,(c0TextL-%d).c_str(),index);photo-namebuf;wsprintf(buf,(c1TextL-%d).c_str(),index);photo-formatbuf;wsprintf(buf,(c2TextL-%d).c_str(),index);photo-createDatebuf;photos_.push_back(newshared_ptrPhoto(photo));}listview_.SetItemCountEx(photos_.size(),LVSICF_NOINVALIDATEALL|LVSICF_NOSCROLL);//listview_.SetItemCount(photos_.size());count;}voidCView::ReloadMockData(){SetTimer(1,500);}intCView::OnCreate(LPCREATESTRUCT lpCreateStruct){font_normal_::GetFont(16,false,LArial);font_bold_::GetFont(16,true,LArial);brush_hollow_AtlGetStockBrush(HOLLOW_BRUSH);brush_white_AtlGetStockBrush(WHITE_BRUSH);brush_red_.CreateSolidBrush(RGB(255,0,0));// 1.创建CListViewCtrllistview_.Create(m_hWnd,0,NULL,WS_CHILD|WS_TABSTOP|WS_VISIBLE|LVS_ALIGNLEFT|LVS_REPORT|LVS_SHOWSELALWAYS|WS_BORDER|LVS_OWNERDATA,0,kMyListViewId);listview_.SetExtendedListViewStyle(LVS_EX_FULLROWSELECT|LVS_EX_GRIDLINES|LVS_EX_DOUBLEBUFFER);//listview_.SetBkColor(RGB(255, 255, 255));listview_.SetTextBkColor(RGB(255,255,255));listview_.SetFont(font_normal_);autoheaderlistview_.GetHeader();header.SetFont(font_bold_);listview_.SetBkColor(RGB(255,255,255));listview_.InsertColumn(0,LNo.,LVCFMT_LEFT,100);listview_.InsertColumn(1,LName,LVCFMT_LEFT,100);listview_.InsertColumn(2,LFormat,LVCFMT_LEFT,100);listview_.InsertColumn(3,LCreate Date,LVCFMT_LEFT,100);// 2.创建按钮buttonReloadMockData_.Create(m_hWnd,0,L加载新数据,WS_CHILD|WS_VISIBLE,0,kMyButtonId);buttonReloadMockData_.SetFont(font_normal_);buttonReloadListView_.Create(m_hWnd,0,L刷新表格,WS_CHILD|WS_VISIBLE,0,kMyButtonId2);buttonReloadListView_.SetFont(font_normal_);buttonDeleteListViewOneRow_.Create(m_hWnd,0,L删除选中行,WS_CHILD|WS_VISIBLE,0,kMyButtonId3);buttonDeleteListViewOneRow_.SetFont(font_normal_);UpdateLayout();return0;}voidCView::UpdateLayout(){CRect rect;GetClientRect(rect);CClientDCdc(m_hWnd);dc.SelectFont(font_normal_);CSizesize_control(500,300);CRect rect_controlCRect(CPoint(20,20),size_control);listview_.MoveWindow(rect_control);CSize size_button;buttonReloadMockData_.GetIdealSize(size_button);rect_controlCRect(CPoint(rect_control.left,rect_control.bottom10),size_button);buttonReloadMockData_.MoveWindow(rect_control);CSize sizeButton2;buttonReloadListView_.GetIdealSize(sizeButton2);rect_controlCRect(CPoint(rect_control.right10,rect_control.top),sizeButton2);buttonReloadListView_.MoveWindow(rect_control);CSize sizeButton3;buttonDeleteListViewOneRow_.GetIdealSize(sizeButton3);rect_controlCRect(CPoint(rect_control.right10,rect_control.top),sizeButton3);buttonDeleteListViewOneRow_.MoveWindow(rect_control);}项目项目源码,VS2010以上 https://download.csdn.net/download/infoworld/93325545运行带SetItemCountEx带LVSICF_NOINVALIDATEALL | LVSICF_NOSCROLL参数:SetItemCount不带参数不带参数时当前可见区域一直刷新这里Name一直变化就是说明在插入数据时一直刷新参考LVM_GETNEXTITEMLVM_SETITEMCOUNTListView_SetItemCountListView_SetItemCountEx使用虚拟列表视图来解决新增大量数据卡顿问题关于列表视图控件