C++ TCString::GetBuffer方法代码示例

void ShowPopup(SHOWPOPUP_DATA *sd)
{
	TCString PopupText;
	if (sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_SHOWPREVCLIENT)) {
		mir_sntprintf(PopupText.GetBuffer(MAX_MSG_LEN), MAX_MSG_LEN, TranslateT("changed client to %s (was %s)"), (const TCHAR*)sd->MirVer, (const TCHAR*)sd->OldMirVer);
		PopupText.ReleaseBuffer();
	}
	else {
		mir_sntprintf(PopupText.GetBuffer(MAX_MSG_LEN), MAX_MSG_LEN, TranslateT("changed client to %s"), (const TCHAR*)sd->MirVer);
		PopupText.ReleaseBuffer();
	}

	PLUGIN_DATA *pdata = (PLUGIN_DATA*)calloc(1, sizeof(PLUGIN_DATA));
	POPUPDATAT ppd = {0};
	ppd.lchContact = sd->hContact;
	char *szProto = GetContactProto(sd->hContact);
	pdata->hIcon = ppd.lchIcon = Finger_GetClientIcon(sd->MirVer, false);
	_ASSERT(ppd.lchIcon);
	if (!ppd.lchIcon || (DWORD)ppd.lchIcon == CALLSERVICE_NOTFOUND) {
		// if we didn't succeed retrieving client icon, show the usual status icon instead
		ppd.lchIcon = LoadSkinnedProtoIcon(szProto, db_get_w(sd->hContact, szProto, "Status", ID_STATUS_OFFLINE));
		pdata->hIcon = NULL;
	}
	_tcsncpy(ppd.lptzContactName, (TCHAR*)CallService(MS_CLIST_GETCONTACTDISPLAYNAME, (WPARAM)sd->hContact, GCDNF_TCHAR), lengthof(ppd.lptzContactName) - 1);
	_tcsncpy(ppd.lptzText, PopupText, lengthof(ppd.lptzText) - 1);
	ppd.colorBack = (sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_DEFBGCOLOUR) ? 0 : sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_BGCOLOUR));
	ppd.colorText = (sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_DEFTEXTCOLOUR) ? 0 : sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_TEXTCOLOUR));
	ppd.PluginWindowProc = PopupWndProc;
	pdata->PopupLClickAction = sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_LCLICK_ACTION);
	pdata->PopupRClickAction = sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_RCLICK_ACTION);
	ppd.iSeconds = sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_POPUPDELAY);
	ppd.PluginData = pdata;
	PUAddPopupT(&ppd);
}

void ShowPopup(SHOWPOPUP_DATA *sd)
{
	TCString PopupText;
	if (sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_SHOWPREVCLIENT)) {
		mir_snwprintf(PopupText.GetBuffer(MAX_MSG_LEN), MAX_MSG_LEN, TranslateT("changed client to %s (was %s)"), (const wchar_t*)sd->MirVer, (const wchar_t*)sd->OldMirVer);
		PopupText.ReleaseBuffer();
	}
	else {
		mir_snwprintf(PopupText.GetBuffer(MAX_MSG_LEN), MAX_MSG_LEN, TranslateT("changed client to %s"), (const wchar_t*)sd->MirVer);
		PopupText.ReleaseBuffer();
	}

	PLUGIN_DATA *pdata = (PLUGIN_DATA*)calloc(1, sizeof(PLUGIN_DATA));
	POPUPDATAT ppd = { 0 };
	ppd.lchContact = sd->hContact;
	char *szProto = GetContactProto(sd->hContact);
	pdata->hIcon = ppd.lchIcon = Finger_GetClientIcon(sd->MirVer, false);
	_ASSERT(ppd.lchIcon);
	if (!ppd.lchIcon || (INT_PTR)ppd.lchIcon == CALLSERVICE_NOTFOUND) {
		// if we didn't succeed retrieving client icon, show the usual status icon instead
		ppd.lchIcon = Skin_LoadProtoIcon(szProto, db_get_w(sd->hContact, szProto, "Status", ID_STATUS_OFFLINE));
		pdata->hIcon = nullptr;
	}
	wcsncpy(ppd.lptzContactName, Clist_GetContactDisplayName(sd->hContact), _countof(ppd.lptzContactName) - 1);
	wcsncpy(ppd.lptzText, PopupText, _countof(ppd.lptzText) - 1);
	ppd.colorBack = (sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_DEFBGCOLOUR) ? 0 : sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_BGCOLOUR));
	ppd.colorText = (sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_DEFTEXTCOLOUR) ? 0 : sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_TEXTCOLOUR));
	ppd.PluginWindowProc = PopupWndProc;
	pdata->PopupLClickAction = sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_LCLICK_ACTION);
	pdata->PopupRClickAction = sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_RCLICK_ACTION);
	ppd.iSeconds = sd->PopupOptPage->GetValue(IDC_POPUPOPTDLG_POPUPDELAY);
	ppd.PluginData = pdata;
	PUAddPopupT(&ppd);
}

void CMsgTree::UpdateItem(int ID) // updates item title, and expanded/collapsed state for groups
{
	COptItem_TreeCtrl *TreeCtrl = GetTreeCtrl();
	int Order = TreeCtrl->IDToOrder(ID);
	if (Order != -1) {
		CBaseTreeItem* TreeItem = (Order <= TREECTRL_ROOTORDEROFFS) ? (CBaseTreeItem*)&TreeCtrl->RootItems[ROOT_ORDER_TO_INDEX(Order)] : (CBaseTreeItem*)&TreeCtrl->Value[Order];
		TCString NewTitle;
		TVITEM tvi;
		tvi.mask = TVIF_HANDLE | TVIF_TEXT;
		tvi.hItem = TreeItem->hItem;
		tvi.pszText = NewTitle.GetBuffer(TREEITEMTITLE_MAXLEN);
		tvi.cchTextMax = TREEITEMTITLE_MAXLEN;
		TreeView_GetItem(hTreeView, &tvi);
		if (TreeItem->Title != (const TCHAR*)tvi.pszText) {
			TreeCtrl->SetModified(true);
			NMMSGTREE nm = { 0 };
			nm.ItemNew = TreeItem;
			nm.hdr.code = MTN_ITEMRENAMED;
			nm.hdr.hwndFrom = hTreeView;
			nm.hdr.idFrom = GetDlgCtrlID(hTreeView);
			SendMessage(GetParent(hTreeView), WM_NOTIFY, 0, (LPARAM)&nm);
		}
		tvi.mask = TVIF_HANDLE | TVIF_TEXT;
		tvi.pszText = TreeItem->Title;
		TreeView_SetItem(hTreeView, &tvi);
		TreeView_Expand(hTreeView, tvi.hItem, (TreeItem->Flags & TIF_EXPANDED) ? TVE_EXPAND : TVE_COLLAPSE);
	}
}

TCString DBGetContactSettingAsString(MCONTACT hContact, const char *szModule, const char *szSetting, const TCHAR *szDefaultValue)
{   // also converts numeric values to a string
    DBVARIANT dbv = {0};
    int iRes = db_get_ws(hContact, szModule, szSetting, &dbv);

    TCString Result;
    if (!iRes && (dbv.type == DBVT_ASCIIZ || dbv.type == DBVT_WCHAR))
    {
        Result = dbv.ptszVal;
    }
    else if (dbv.type == DBVT_BYTE || dbv.type == DBVT_WORD || dbv.type == DBVT_DWORD)
    {
        long value = (dbv.type == DBVT_DWORD) ? dbv.dVal : (dbv.type == DBVT_WORD ? dbv.wVal : dbv.bVal);
        _ultot(value, Result.GetBuffer(64), 10);
        Result.ReleaseBuffer();
    }
    else Result = szDefaultValue;

    if (!iRes)
        db_free(&dbv);

    return Result;
}

TCString CompileRegexp(TCString Regexp, int bAddAsUsualSubstring, int ID)
{
	TCString Result(_T(""));
	sPcreCompileData s = {0};
	int NewID = PcreCompileData.AddElem(s);
	PcreCompileData[NewID].ID = ID;
	if (hPcreDLL && !bAddAsUsualSubstring)
	{
		const char *Err;
		int ErrOffs;
		int Flags = PCRE_CASELESS;
		if (Regexp[0] == '/')
		{
			TCString OrigRegexp = Regexp;
			Regexp = Regexp.Right(Regexp.GetLen() - 1);
			TCHAR *pRegexpEnd = (TCHAR*)Regexp + Regexp.GetLen();
			TCHAR *p = _tcsrchr(Regexp.GetBuffer(), '/');
			if (!p)
			{
				Regexp = OrigRegexp;
			} else
			{
				*p = 0;
				Flags = 0;
				while (++p < pRegexpEnd)
				{
					switch (*p) {
					case 'i':
						Flags |= PCRE_CASELESS;
						break;
					case 'm':
						Flags |= PCRE_MULTILINE;
						break;
					case 's':
						Flags |= PCRE_DOTALL;
						break;
					case 'x':
						Flags |= PCRE_EXTENDED;
						break;
					case 'A':
						Flags |= PCRE_ANCHORED;
						break;
					case 'f':
						Flags |= PCRE_FIRSTLINE;
						break;
					case 'D':
						Flags |= PCRE_DOLLAR_ENDONLY;
						break;
					case 'U':
						Flags |= PCRE_UNGREEDY;
						break;
					case 'X':
						Flags |= PCRE_EXTRA;
						break;
					default:
						// Result += LogMessage(Translate("Warning, unknown pattern modifier '%c':\n"), *p );
						break;
					}
				}
			}
			Regexp.ReleaseBuffer();
		}

		PcreCompileData[NewID].pPcre = pcre_compile(WCHAR2UTF8(Regexp).GetData(), PCRE_UTF8 | PCRE_NO_UTF8_CHECK | Flags, &Err, &ErrOffs, NULL);

		if (PcreCompileData[NewID].pPcre) {
			PcreCompileData[NewID].pExtra = NULL;
			if (pcre_study)
				PcreCompileData[NewID].pExtra = pcre_study(PcreCompileData[NewID].pPcre, 0, &Err);
		} 
		else {
			// Result += LogMessage(TranslateT("Syntax error in regexp\n%s\nat offset %d: %s."), (TCHAR*)Regexp, ErrOffs, (TCHAR*)ANSI2TCHAR(Err)) + _T("\n\n");
			PcreCompileData[NewID].Pattern = Regexp;
	 	}
	} 
	else PcreCompileData[NewID].Pattern = Regexp;

	return Result;
}

INT_PTR srvVariablesHandler(WPARAM, LPARAM lParam)
{
    ARGUMENTSINFO *ai = (ARGUMENTSINFO*)lParam;
    ai->flags = AIF_DONTPARSE;
    TCString Result;
    if (!mir_tstrcmp(ai->targv[0], VAR_AWAYSINCE_TIME)) {
        GetTimeFormat(LOCALE_USER_DEFAULT, 0, g_ProtoStates[VarParseData.szProto].AwaySince, (ai->argc > 1 && *ai->targv[1]) ? ai->targv[1] : _T("H:mm"), Result.GetBuffer(256), 256);
        Result.ReleaseBuffer();
    }
    else if (!mir_tstrcmp(ai->targv[0], VAR_AWAYSINCE_DATE)) {
        GetDateFormat(LOCALE_USER_DEFAULT, 0, g_ProtoStates[VarParseData.szProto].AwaySince, (ai->argc > 1 && *ai->targv[1]) ? ai->targv[1] : NULL, Result.GetBuffer(256), 256);
        Result.ReleaseBuffer();
    }
    else if (!mir_tstrcmp(ai->targv[0], VAR_STATDESC)) {
        Result = (VarParseData.Flags & VPF_XSTATUS) ? STR_XSTATUSDESC : pcli->pfnGetStatusModeDescription(g_ProtoStates[VarParseData.szProto].Status, 0);
    }
    else if (!mir_tstrcmp(ai->targv[0], VAR_MYNICK)) {
        if (g_MoreOptPage.GetDBValueCopy(IDC_MOREOPTDLG_MYNICKPERPROTO) && VarParseData.szProto)
            Result = db_get_s(NULL, VarParseData.szProto, "Nick", (TCHAR*)NULL);

        if (Result == NULL)
            Result = pcli->pfnGetContactDisplayName(NULL, 0);

        if (Result == NULL)
            Result = TranslateT("Stranger");
    }
    else if (!mir_tstrcmp(ai->targv[0], VAR_REQUESTCOUNT)) {
        mir_sntprintf(Result.GetBuffer(16), 16, _T("%d"), db_get_w(ai->fi->hContact, MOD_NAME, DB_REQUESTCOUNT, 0));
        Result.ReleaseBuffer();
    }
    else if (!mir_tstrcmp(ai->targv[0], VAR_MESSAGENUM)) {
        mir_sntprintf(Result.GetBuffer(16), 16, _T("%d"), db_get_w(ai->fi->hContact, MOD_NAME, DB_MESSAGECOUNT, 0));
        Result.ReleaseBuffer();
    }
    else if (!mir_tstrcmp(ai->targv[0], VAR_TIMEPASSED)) {
        ULARGE_INTEGER ul_AwaySince, ul_Now;
        SYSTEMTIME st;
        GetLocalTime(&st);
        SystemTimeToFileTime(&st, (LPFILETIME)&ul_Now);
        SystemTimeToFileTime(g_ProtoStates[VarParseData.szProto].AwaySince, (LPFILETIME)&ul_AwaySince);
        ul_Now.QuadPart -= ul_AwaySince.QuadPart;
        ul_Now.QuadPart /= 10000000; // now it's in seconds
        Result.GetBuffer(256);
        if (ul_Now.LowPart >= 7200) // more than 2 hours
            mir_sntprintf(Result, 256, TranslateT("%d hours"), ul_Now.LowPart / 3600);
        else if (ul_Now.LowPart >= 120) // more than 2 minutes
            mir_sntprintf(Result, 256, TranslateT("%d minutes"), ul_Now.LowPart / 60);
        else
            mir_sntprintf(Result, 256, TranslateT("%d seconds"), ul_Now.LowPart);
        Result.ReleaseBuffer();
    }
    else if (!mir_tstrcmp(ai->targv[0], VAR_PREDEFINEDMESSAGE)) {
        ai->flags = 0; // reset AIF_DONTPARSE flag
        if (ai->argc != 2)
            return NULL;

        COptPage MsgTreeData(g_MsgTreePage);
        COptItem_TreeCtrl *TreeCtrl = (COptItem_TreeCtrl*)MsgTreeData.Find(IDV_MSGTREE);
        TreeCtrl->DBToMem(CString(MOD_NAME));

        for (int i = 0; i < TreeCtrl->Value.GetSize(); i++) {
            if (!(TreeCtrl->Value[i].Flags & TIF_GROUP) && !mir_tstrcmpi(TreeCtrl->Value[i].Title, ai->targv[1])) {
                Result = TreeCtrl->Value[i].User_Str1;
                break;
            }
        }
        if (Result == NULL) // if we didn't find a message with specified title
            return NULL; // return it now, as later we change NULL to ""
    }
    else if (!mir_tstrcmp(ai->targv[0], VAR_PROTOCOL)) {
        if (VarParseData.szProto) {
            CString AnsiResult;
            CallProtoService(VarParseData.szProto, PS_GETNAME, 256, (LPARAM)AnsiResult.GetBuffer(256));
            AnsiResult.ReleaseBuffer();
            Result = _A2T(AnsiResult);
        }
        if (Result == NULL) // if we didn't find a message with specified title
            return NULL; // return it now, as later we change NULL to ""
    }
    TCHAR *szResult = (TCHAR*)malloc((Result.GetLen() + 1) * sizeof(TCHAR));
    if (!szResult)
        return NULL;

    mir_tstrcpy(szResult, (Result != NULL) ? Result : _T(""));
    return (INT_PTR)szResult;
}

int ContactSettingChanged(WPARAM hContact, LPARAM lParam)
{
	DBCONTACTWRITESETTING *cws = (DBCONTACTWRITESETTING*)lParam;
	if (lstrcmpA(cws->szSetting, DB_MIRVER))
		return 0;

	SHOWPOPUP_DATA sd = {0};
	char *szProto = GetContactProto(hContact);
	if (g_PreviewOptPage)
		sd.MirVer = _T("Miranda NG ICQ 0.93.5.3007");
	else {
		if (!hContact) // exit if hContact == NULL and it's not a popup preview
			return 0;

		_ASSERT(szProto);
		if (!strcmp(szProto, META_PROTO)) // workaround for metacontacts
			return 0;

		sd.MirVer = db_get_s(hContact, szProto, DB_MIRVER, _T(""));
		if (sd.MirVer.IsEmpty())
			return 0;
	}
	sd.OldMirVer = db_get_s(hContact, MOD_NAME, DB_OLDMIRVER, _T(""));
	db_set_ts(hContact, MOD_NAME, DB_OLDMIRVER, sd.MirVer); // we have to write it here, because we modify sd.OldMirVer and sd.MirVer to conform our settings later
	if (sd.OldMirVer.IsEmpty())  // looks like it's the right way to do
		return 0;

	COptPage PopupOptPage;
	if (g_PreviewOptPage)
		PopupOptPage = *g_PreviewOptPage;
	else {
		PopupOptPage = g_PopupOptPage;
		PopupOptPage.DBToMem();
	}

	MCONTACT hContactOrMeta = (hContact) ? db_mc_getMeta(hContact) : 0;
	if (!hContactOrMeta)
		hContactOrMeta = hContact;

	if (hContact && db_get_b(hContactOrMeta, "CList", "Hidden", 0))
		return 0;

	int PerContactSetting = hContact ? db_get_b(hContact, MOD_NAME, DB_CCN_NOTIFY, NOTIFY_USEGLOBAL) : NOTIFY_ALWAYS; // NOTIFY_ALWAYS for preview
	if (PerContactSetting == NOTIFY_USEGLOBAL && hContactOrMeta != hContact) // subcontact setting has a priority over a metacontact setting
		PerContactSetting = db_get_b(hContactOrMeta, MOD_NAME, DB_CCN_NOTIFY, NOTIFY_USEGLOBAL);

	if (PerContactSetting && (PerContactSetting == NOTIFY_ALMOST_ALWAYS || PerContactSetting == NOTIFY_ALWAYS || !PopupOptPage.GetValue(IDC_POPUPOPTDLG_USESTATUSNOTIFYFLAG) || !(db_get_dw(hContactOrMeta, "Ignore", "Mask1", 0) & 0x8))) { // check if we need to notify at all
		sd.hContact = hContact;
		sd.PopupOptPage = &PopupOptPage;
		if (!PopupOptPage.GetValue(IDC_POPUPOPTDLG_VERCHGNOTIFY) || !PopupOptPage.GetValue(IDC_POPUPOPTDLG_SHOWVER)) {
			if (bFingerprintExists) {
				LPCTSTR ptszOldClient = Finger_GetClientDescr(sd.OldMirVer); 
				LPCTSTR ptszClient = Finger_GetClientDescr(sd.MirVer);
				if (ptszOldClient && ptszClient) {
					if (PerContactSetting != NOTIFY_ALMOST_ALWAYS && PerContactSetting != NOTIFY_ALWAYS && !PopupOptPage.GetValue(IDC_POPUPOPTDLG_VERCHGNOTIFY) && !_tcscmp(ptszClient, ptszOldClient))
						return 0;

					if (!PopupOptPage.GetValue(IDC_POPUPOPTDLG_SHOWVER)) {
						sd.MirVer = ptszClient;
						sd.OldMirVer = ptszOldClient;
					}
				}
			}
		}
		if (sd.MirVer == (const TCHAR*)sd.OldMirVer) {
			_ASSERT(hContact);
			return 0;
		}
		if (PerContactSetting == NOTIFY_ALWAYS || (PopupOptPage.GetValue(IDC_POPUPOPTDLG_POPUPNOTIFY) && (g_PreviewOptPage || PerContactSetting == NOTIFY_ALMOST_ALWAYS || -1 == PcreCheck(sd.MirVer)))) {
			ShowPopup(&sd);
			SkinPlaySound(CLIENTCHANGED_SOUND);
		}
	}

	if (hContact) {
		TCString ClientName;
		if (PopupOptPage.GetValue(IDC_POPUPOPTDLG_SHOWPREVCLIENT) && sd.OldMirVer.GetLen()) {
			mir_sntprintf(ClientName.GetBuffer(MAX_MSG_LEN), MAX_MSG_LEN, TranslateT("%s (was %s)"), (const TCHAR*)sd.MirVer, (const TCHAR*)sd.OldMirVer);
			ClientName.ReleaseBuffer();
		}
		else ClientName = sd.MirVer;
	}
	_ASSERT(sd.MirVer.GetLen()); // save the last known MirVer value even if the new one is empty
	return 0;
}

static LRESULT CALLBACK MsgTreeSubclassProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
	CMsgTree *dat = CWndUserData(GetParent(hWnd)).GetMsgTree();
	switch (Msg) {
	case UM_MSGTREE_UPDATE: // returns TRUE if updated
		{
			bool Modified = dat->MsgTreePage.GetModified();
			TCString WndTitle;
			if (Modified) {
				WndTitle.GetBuffer(256);
				HWND hCurWnd = hWnd;
				do {
					hCurWnd = GetParent(hCurWnd);
				} while (hCurWnd && !GetWindowText(hCurWnd, WndTitle, 256));
				WndTitle.ReleaseBuffer();
			}
			if (!Modified || MessageBox(GetParent(hWnd), TCString(TranslateT("You've made changes to multiple message trees at a time.\r\nDo you want to leave changes in \"")) + WndTitle + TranslateT("\" dialog?\r\nPress Yes to leave changes in this dialog, or No to discard its changes and save changes of the other message tree instead."), WndTitle + _T(" - ") + TranslateT("New Away System"), MB_ICONQUESTION | MB_YESNO) == IDNO) {
				COptItem_TreeCtrl *TreeCtrl = dat->GetTreeCtrl();
				TCString OldTitle, OldMsg, NewTitle, NewMsg;
				int OldOrder = TreeCtrl->IDToOrder(TreeCtrl->GetSelectedItemID(GetParent(hWnd)));
				if (OldOrder != -1) {
					CBaseTreeItem* ItemOld = (OldOrder <= TREECTRL_ROOTORDEROFFS) ? (CBaseTreeItem*)&TreeCtrl->RootItems[ROOT_ORDER_TO_INDEX(OldOrder)] : (CBaseTreeItem*)&TreeCtrl->Value[OldOrder];
					OldTitle = ItemOld->Title;
					if (!(ItemOld->Flags & TIF_ROOTITEM))
						OldMsg = ((CTreeItem*)ItemOld)->User_Str1;
				}
				dat->UpdateLock++;
				dat->MsgTreePage.DBToMemToPage();
				dat->UpdateLock--;
				NMMSGTREE nm = { 0 };
				int Order = TreeCtrl->IDToOrder(TreeCtrl->GetSelectedItemID(GetParent(hWnd)));
				if (Order != -1) {
					nm.ItemNew = (Order <= TREECTRL_ROOTORDEROFFS) ? (CBaseTreeItem*)&TreeCtrl->RootItems[ROOT_ORDER_TO_INDEX(Order)] : (CBaseTreeItem*)&TreeCtrl->Value[Order];
					NewTitle = nm.ItemNew->Title;
					if (!(nm.ItemNew->Flags & TIF_ROOTITEM))
						NewMsg = ((CTreeItem*)nm.ItemNew)->User_Str1;
				}
				if (OldTitle.IsEmpty())
					OldTitle = _T(""); // to be sure that NULL will be equal to "" in the latter comparisons
				if (OldMsg.IsEmpty())
					OldMsg = _T("");
				if (NewTitle.IsEmpty())
					NewTitle = _T("");
				if (NewMsg.IsEmpty())
					NewMsg = _T("");

				if (OldTitle != (const TCHAR*)NewTitle || OldMsg != (const TCHAR*)NewMsg) {
					// probably it's better to leave nm.ItemOld = NULL, to prevent accidental rewriting of it with old data from an edit control etc.
					nm.hdr.code = MTN_SELCHANGED;
					nm.hdr.hwndFrom = hWnd;
					nm.hdr.idFrom = GetDlgCtrlID(hWnd);
					SendMessage(GetParent(hWnd), WM_NOTIFY, 0, (LPARAM)&nm);
				}
				return true;
			}
		}
		return false;

	case WM_KEYDOWN:
		switch (wParam) {
		case VK_DELETE:
			dat->DeleteSelectedItem();
			break;
		case VK_INSERT:
			dat->AddMessage();
			break;
		}
		break;

	case WM_RBUTTONDOWN:
		SetFocus(hWnd);
		{
			TVHITTESTINFO hitTest;
			hitTest.pt.x = (short)LOWORD(lParam);
			hitTest.pt.y = (short)HIWORD(lParam);
			TreeView_HitTest(hWnd, &hitTest);
			if (hitTest.hItem && hitTest.flags & TVHT_ONITEM)
				TreeView_SelectItem(hWnd, hitTest.hItem);

			return DefWindowProc(hWnd, Msg, wParam, lParam);
		}
		break;

	case WM_CONTEXTMENU:
		{
			TVHITTESTINFO ht;
			ht.pt.x = GET_X_LPARAM(lParam);
			ht.pt.y = GET_Y_LPARAM(lParam);
			TVITEM tvi = { 0 };
			if (ht.pt.x == -1 && ht.pt.y == -1) { // use selected item 
				if (tvi.hItem = TreeView_GetSelection(hWnd)) {
					TreeView_EnsureVisible(hWnd, tvi.hItem);
					RECT rc;
					TreeView_GetItemRect(hWnd, tvi.hItem, &rc, true);
					ht.pt.x = rc.left;
					ht.pt.y = rc.bottom;
				}
			}
			else {
				ScreenToClient(hWnd, &ht.pt);
//.........这里部分代码省略.........