在动态集中使用虚拟CListView

　2010-06-04 20:39:26　来源：WEB开发网　闂傚倷绶氬ḿ褍螞閹绢喖绠柨鐕傛嫹

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核心提示：建立LVN_GETDISPINFO消息的处理函数：void CVirtualListViewView::OnGetDispInfo(NMHDR* pNMHDR, LRESULT* pResult){LV_DISPINFO* pDispInfo = (LV_DISPINFO*)pNMHDR;TCHAR szValue[M

建立LVN_GETDISPINFO消息的处理函数：

void CVirtualListViewView::OnGetDispInfo(NMHDR* pNMHDR, LRESULT* pResult) { LV_DISPINFO* pDispInfo = (LV_DISPINFO*)pNMHDR; TCHAR szValue[MAX_PATH]; COleVariant varValue; long index = pDispInfo->item.iItem; long subItem = pDispInfo->item.iSubItem; if(pDispInfo->item.mask & LVIF_TEXT) { try { pRecordSet->SetAbsolutePosition(index);//Set the file to desired index } catch(CDaoException* e) { return; } try { if(subItem) pRecordSet->GetFieldValue(subItem, varValue); else pRecordSet->GetFieldValue(0, varValue); } catch(CDaoException* e) { return; } const VARIANT* variant = LPCVARIANT(varValue); switch(variant->vt) { case VT_I2:{ wsprintf(szValue, "%d", variant->iVal); break; } case VT_I4:{ wsprintf(szValue, "%d", variant->lVal); break; } case VT_R4:{ wsprintf(szValue, "%f", variant->fltVal); break; } case VT_R8:{ wsprintf(szValue, "%f", variant->dblVal); break; } case VT_CY:{ COleCurrency c(varValue); CString s = c.Format();//ie. 1.00 strcpy(szValue, s.GetBuffer(s.GetLength())); s.ReleaseBuffer(); break; } case VT_DATE:{ COleDateTime t(variant->date); CString s = t.Format( "%A, %B %d, %Y" );//Day of Week, Month Day, Year strcpy(szValue, s.GetBuffer(s.GetLength())); s.ReleaseBuffer(); break; } case VT_BSTR:{ CString str = V_BSTRT( &varValue );//convert BSTR to CString strcpy(szValue, str.GetBuffer(str.GetLength())); str.ReleaseBuffer(); break; } case VT_BOOL:{ if(variant->boolVal) strcpy(szValue, "TRUE"); else strcpy(szValue, "FALSE"); break; } case VT_UI1:{ strcpy(szValue, (char*)variant->bVal); break; } default: break; } lstrcpyn(pDispInfo->item.pszText, szValue, pDispInfo->item.cchTextMax);//set item text } if(pDispInfo->item.mask & LVIF_IMAGE) pDispInfo->item.iImage = 0;//set image to first in list *pResult = 0; }