C++ TCString::Left方法代码示例

void CProtoSettings::SetMsgFormat(int Flags, TCString Message)
{
	if (Flags & (SMF_TEMPORARY | SMF_PERSONAL) && g_AutoreplyOptPage.GetDBValueCopy(IDC_REPLYDLG_RESETCOUNTERWHENSAMEICON) && GetMsgFormat(Flags & (SMF_TEMPORARY | SMF_PERSONAL)) != (const TCHAR*)Message)
		ResetSettingsOnStatusChange(szProto);

	if (Flags & SMF_TEMPORARY) {
		_ASSERT(!Status || Status == g_ProtoStates[szProto].Status);
		g_ProtoStates[szProto].TempMsg = (szProto || Message != NULL) ? Message : CProtoSettings(NULL, Status).GetMsgFormat(GMF_LASTORDEFAULT);
	}

	if (Flags & SMF_PERSONAL) { // set a "personal" message for a protocol. also it's used to set global status message (hContact = NULL).
		// if Message == NULL, then we'll use the "default" message - i.e. it's either the global message for szProto != NULL (we delete the per-proto DB setting), or it's just a default message for a given status for szProto == NULL.
		g_ProtoStates[szProto].TempMsg.Unset();
		CString DBSetting(ProtoStatusToDBSetting(DB_STATUSMSG, IDC_MOREOPTDLG_PERSTATUSPROTOMSGS));
		if (Message != NULL)
			db_set_ts(NULL, MOD_NAME, DBSetting, Message);
		else {
			if (!szProto)
				db_set_ts(NULL, MOD_NAME, DBSetting, CProtoSettings(NULL, Status).GetMsgFormat(GMF_LASTORDEFAULT)); // global message can't be NULL; we can use an empty string instead if it's really necessary
			else
				db_unset(NULL, MOD_NAME, DBSetting);
		}
	}

	if (Flags & SMF_LAST) {
		COptPage MsgTreeData(g_MsgTreePage);
		COptItem_TreeCtrl *TreeCtrl = (COptItem_TreeCtrl*)MsgTreeData.Find(IDV_MSGTREE);
		TreeCtrl->DBToMem(CString(MOD_NAME));
		int RecentGroupID = GetRecentGroupID(Status);
		if (RecentGroupID == -1) { // we didn't find the group, it also means that we're using per status messages; so we need to create it
			TreeCtrl->Value.AddElem(CTreeItem(Status ? pcli->pfnGetStatusModeDescription(Status, 0) : MSGTREE_RECENT_OTHERGROUP, g_Messages_RecentRootID, RecentGroupID = TreeCtrl->GenerateID(), TIF_GROUP));
			TreeCtrl->SetModified(true);
		}
		int i;
		// try to find an identical message in the same group (to prevent saving multiple identical messages), 
		// or at least if we'll find an identical message somewhere else, then we'll use its title for our new message
		TCString Title(_T(""));
		for (i = 0; i < TreeCtrl->Value.GetSize(); i++) {
			if (!(TreeCtrl->Value[i].Flags & TIF_GROUP) && TreeCtrl->Value[i].User_Str1 == (const TCHAR*)Message) {
				if (TreeCtrl->Value[i].ParentID == RecentGroupID) { // found it in the same group
					int GroupOrder = TreeCtrl->IDToOrder(RecentGroupID);
					TreeCtrl->Value.MoveElem(i, (GroupOrder >= 0) ? (GroupOrder + 1) : 0); // now move it to the top of recent messages list
					TreeCtrl->SetModified(true);
					break; // no reason to search for anything else
				}
				if (Title.IsEmpty()) // it's not in the same group, but at least we'll use its title
					Title = TreeCtrl->Value[i].Title;
			}
		}
		if (i == TreeCtrl->Value.GetSize()) { // we didn't find an identical message in the same group, so we'll add our new message here
			if (Title.IsEmpty()) { // didn't find a title for our message either
				if (Message.GetLen() > MRM_MAX_GENERATED_TITLE_LEN)
					Title = Message.Left(MRM_MAX_GENERATED_TITLE_LEN - 3) + _T("...");
				else
					Title = Message;

				TCHAR *p = Title.GetBuffer();
				while (*p) { // remove "garbage"
					if (!(p = _tcspbrk(p, _T("\r\n\t"))))
						break;

					*p++ = ' ';
				}
				Title.ReleaseBuffer();
			}
			int GroupOrder = TreeCtrl->IDToOrder(RecentGroupID);
			TreeCtrl->Value.InsertElem(CTreeItem(Title, RecentGroupID, TreeCtrl->GenerateID(), 0, Message), (GroupOrder >= 0) ? (GroupOrder + 1) : 0);
			TreeCtrl->SetModified(true);
		}

		// now clean up here
		int MRMNum = 0;
		int MaxMRMNum = g_MoreOptPage.GetDBValueCopy(IDC_MOREOPTDLG_RECENTMSGSCOUNT);
		for (i = 0; i < TreeCtrl->Value.GetSize(); i++) {
			if (TreeCtrl->Value[i].ParentID == RecentGroupID) { // found a child of our group
				if (TreeCtrl->Value[i].Flags & TIF_GROUP || ++MRMNum > MaxMRMNum) { // what groups are doing here?! :))
					TreeCtrl->Value.RemoveElem(i);
					TreeCtrl->SetModified(true);
					i--;
				}
			}
		}

		// if we're saving recent messages per status, then remove any messages that were left at the recent messages' root
		if (g_MoreOptPage.GetDBValueCopy(IDC_MOREOPTDLG_PERSTATUSMRM)) {
			for (i = 0; i < TreeCtrl->Value.GetSize(); i++) {
				if (TreeCtrl->Value[i].ParentID == g_Messages_RecentRootID) {
					if (!(TreeCtrl->Value[i].Flags & TIF_GROUP)) {
						TreeCtrl->Value.RemoveElem(i);
						TreeCtrl->SetModified(true);
						i--;
					}
				}
			}
		}
		TreeCtrl->MemToDB(CString(MOD_NAME));
	}
}