C++ DBCachedContact::IsSub方法代码示例

STDMETHODIMP_(MEVENT) CDb3Mmap::FindLastEvent(MCONTACT contactID)
{
	DBCachedContact *cc;
	DWORD ofsContact = GetContactOffset(contactID, &cc);

	mir_cslock lck(m_csDbAccess);
	DBContact *dbc = (DBContact*)DBRead(ofsContact, nullptr);
	if (dbc->signature != DBCONTACT_SIGNATURE)
		return 0;
	if (!cc || !cc->IsSub())
		return MEVENT(dbc->ofsLastEvent);

	if ((cc = m_cache->GetCachedContact(cc->parentID)) == nullptr)
		return 0;
	dbc = (DBContact*)DBRead(cc->dwOfsContact, nullptr);
	if (dbc->signature != DBCONTACT_SIGNATURE)
		return 0;

	for (DWORD dwOffset = dbc->ofsLastEvent; dwOffset != 0;) {
		DBEvent *dbe = AdaptEvent(dwOffset, contactID);
		if (dbe->signature != DBEVENT_SIGNATURE)
			return 0;
		if (dbe->contactID == contactID)
			return MEVENT(dwOffset);
		dwOffset = dbe->ofsPrev;
	}
	return 0;
}

STDMETHODIMP_(HANDLE) CDb3Mmap::FindLastEvent(MCONTACT contactID)
{
	DBCachedContact *cc;
	DWORD ofsContact = GetContactOffset(contactID, &cc);

	mir_cslock lck(m_csDbAccess);
	DBContact *dbc = (DBContact*)DBRead(ofsContact, sizeof(DBContact), NULL);
	if (dbc->signature != DBCONTACT_SIGNATURE)
		return NULL;
	if (!cc || !cc->IsSub())
		return HANDLE(dbc->ofsLastEvent);

	if ((cc = m_cache->GetCachedContact(cc->parentID)) == NULL)
		return NULL;
	dbc = (DBContact*)DBRead(cc->dwDriverData, sizeof(DBContact), NULL);
	if (dbc->signature != DBCONTACT_SIGNATURE)
		return NULL;

	for (DWORD dwOffset = dbc->ofsLastEvent; dwOffset != 0;) {
		DBEvent *dbe = (DBEvent*)DBRead(dwOffset, sizeof(DBEvent), NULL);
		if (dbe->signature != DBEVENT_SIGNATURE)
			return NULL;
		if (dbe->contactID == contactID)
			return HANDLE(dwOffset);
		dwOffset = dbe->ofsPrev;
	}
	return NULL;
}

// returns parent hContact for a subcontact or hContact itself if it's not a sub
MIR_CORE_DLL(MCONTACT) db_mc_tryMeta(MCONTACT hContact)
{
	if (currDb == NULL) return hContact;

	DBCachedContact *cc = currDb->m_cache->GetCachedContact(hContact);
	if (cc == NULL) return hContact;

	return (cc->IsSub()) ? cc->parentID : hContact;
}

static INT_PTR CALLBACK Meta_SelectDialogProc(HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM lParam)
{
	switch (msg) {
	case WM_INITDIALOG:
		TranslateDialogDefault(hwndDlg);
		{
			DBCachedContact *cc = currDb->m_cache->GetCachedContact(lParam);
			if (cc == NULL) {
				DestroyWindow(hwndDlg);
				return TRUE;
			}

			if (cc->IsMeta()) {
				MessageBox(hwndDlg,
							  TranslateT("This contact is a metacontact.\nYou can't add a metacontact to another metacontact.\n\nPlease choose another."),
							  TranslateT("Metacontact conflict"), MB_ICONERROR);
				DestroyWindow(hwndDlg);
				return TRUE;
			}

			if (cc->IsSub()) {
				MessageBox(hwndDlg,
							  TranslateT("This contact is already associated to a metacontact.\nYou cannot add a contact to multiple metacontacts."),
							  TranslateT("Multiple metacontacts"), MB_ICONERROR);
				DestroyWindow(hwndDlg);
				return TRUE;
			}
		}

		SetWindowLongPtr(hwndDlg, GWLP_USERDATA, lParam); // user data is contact handle

		SendMessage(hwndDlg, WM_SETICON, ICON_BIG, (LPARAM)LoadIconEx(I_ADD));

		// Initialize the graphical part
		CheckDlgButton(hwndDlg, IDC_ONLYAVAIL, BST_CHECKED); // Initially checked; display all metacontacts is only an option
		// Besides, we can check if there is at least one metacontact to add the contact to.
		if (BuildList(GetDlgItem(hwndDlg, IDC_METALIST), FALSE) <= 0) {
			if (MessageBox(hwndDlg, TranslateT(szConvMsg), TranslateT("No suitable metacontact found"), MB_ICONQUESTION | MB_YESNO | MB_DEFBUTTON1) == IDYES)
				Meta_Convert(lParam, 0);
			DestroyWindow(hwndDlg);
			return TRUE;
		}
		else {
			// get contact display name from clist
			TCHAR *ptszCDN = cli.pfnGetContactDisplayName(lParam, 0);
			if (!ptszCDN)
				ptszCDN = TranslateT("a contact");

			// ... and set it to the Window title.
			TCHAR buf[256];
			mir_sntprintf(buf, SIZEOF(buf), TranslateT("Adding %s..."), ptszCDN);
			SetWindowText(hwndDlg, buf);
		}
		ShowWindow(hwndDlg, SW_SHOWNORMAL);
		return TRUE;

	case WM_COMMAND:
		if (HIWORD(wParam) == LBN_DBLCLK) // emulate click ok Ok
			wParam = MAKEWPARAM(IDOK, BN_CLICKED);

		if (HIWORD(wParam) != BN_CLICKED)
			break;	// Only clicks of buttons are relevant, let other COMMANDs through

		switch (LOWORD(wParam)) {
			case IDOK:
			{
				int item = SendDlgItemMessage(hwndDlg, IDC_METALIST, LB_GETCURSEL, 0, 0);	// Get the index of the selected metacontact
				if (item == -1)
					return IDOK == MessageBox(hwndDlg, TranslateT("Please select a metacontact"), TranslateT("No metacontact selected"), MB_ICONHAND);

				MCONTACT hContact = (MCONTACT)GetWindowLongPtr(hwndDlg, GWLP_USERDATA);
				MCONTACT hMeta = (MCONTACT)SendMessage(GetDlgItem(hwndDlg, IDC_METALIST), LB_GETITEMDATA, item, 0);
				if (!Meta_Assign(hContact, hMeta, FALSE))
					MessageBox(hwndDlg, TranslateT("Assignment to the metacontact failed."), TranslateT("Assignment failure"), MB_ICONERROR);
			}
			// fall through
		case IDCANCEL:
			DestroyWindow(hwndDlg);
			break;

		case IDC_CHK_SRT:
			SetWindowLongPtr(GetDlgItem(hwndDlg, IDC_METALIST), GWL_STYLE, GetWindowLongPtr(GetDlgItem(hwndDlg, IDC_METALIST), GWL_STYLE) ^ LBS_SORT);
			if (BuildList(GetDlgItem(hwndDlg, IDC_METALIST), IsDlgButtonChecked(hwndDlg, IDC_CHK_SRT) ? TRUE : FALSE) <= 0) {
				if (MessageBox(hwndDlg, TranslateT(szConvMsg), TranslateT("No suitable metacontact found"), MB_ICONQUESTION | MB_YESNO | MB_DEFBUTTON1) == IDYES)
					Meta_Convert(lParam, 0);
				DestroyWindow(hwndDlg);
				return TRUE;
			}
			break;
		}
		break;

	case WM_DESTROY:
		// Free all allocated memory and return the focus to the CList
		HWND clist = GetParent(hwndDlg);
		Skin_ReleaseIcon((HICON)SendMessage(hwndDlg, WM_SETICON, ICON_BIG, 0));
		EndDialog(hwndDlg, TRUE);
		SetFocus(clist);
		return TRUE;
	}
//.........这里部分代码省略.........