//
//////////////////////////////////////////////////////////////////////
LRESULT CALLBACK MessengerPlusGlobalHook(int nCode, WPARAM wParam, LPARAM lParam)
{
	if(nCode == HCBT_CREATEWND && !GetParent((HWND)wParam) && !g_bInitialized && !g_bStopHooking) //Top Most windows only
	{
		TCHAR szClass[256]; szClass[0] = '\0';
		try
		{
			//Get the class name of this window
			HWND hwnd = (HWND)wParam;
			GetClassName(hwnd, szClass, 255);

			//Main Messenger window
			if(_tcscmp(szClass, CMainMsgWnd::m_sClassName4) == 0
				|| _tcscmp(szClass, CMainMsgWnd::m_sClassName5) == 0)
			{
				try
				{
					if(!g_wndMainMsg || !g_wndMainMsg->IsWindowHooked())
					{
						//Initialize and check if the window is really what we expect
						TRACE("QuickInitialize will be called from main window hook");
						QuickInitialize();
						if(CPreferences::GetMPHookState() > 0)
							Initialize();
						else
						{
							if(g_mpWnd)
								g_mpWnd->StartGlobalTimer();
						}

						if(g_bInitialized || CPreferences::GetMPHookState() <= 0)
						{
							//Check again... Initialize() can provoke a chain reaction
							if(!g_wndMainMsg || !g_wndMainMsg->IsWindowHooked())
							{
								#ifdef _DEBUG
									if(((CPreferences::GetMessengerVersion() < 5 || CPreferences::IsWindowsMessenger()) && _tcscmp(szClass, CMainMsgWnd::m_sClassName5) == 0)
										|| (CPreferences::GetMessengerVersion() >= 5 && _tcscmp(szClass, CMainMsgWnd::m_sClassName4) == 0))
									{
										TRACE("Error: Unexpected Messenger window class");
									}
								#endif

								if(g_wndMainMsg && !g_wndMainMsg->IsDestroyed())
									delete g_wndMainMsg;
								g_wndMainMsg = new CMainMsgWnd(hwnd);
							}
						}
						else
						{
							TRACE("*** ERROR: main Messenger window can't be hooked");
						}
					}
				}
				catch(...)
				{
					TRACE("ERROR: An exception was thrown in MessengerPlusGlobalHook (Main Messenger window)");
					TRACEFLUSH;
				}
			}

			//Instant Message window
			else if(_tcscmp(szClass, CInstantMsgWnd::m_sClassName) == 0
				|| _tcscmp(szClass, CMobileMsgWnd::m_sClassName) == 0)
			{
				try
				{
					if(CPreferences::GetMPHookState() > 0)
					{
						if(!CHookedWnd::IsWindowHooked(hwnd))
						{
							TRACE("Initialize will be called from Instant Message hook");
							Initialize();
							if(g_bInitialized)
							{
								if(_tcscmp(szClass, CMobileMsgWnd::m_sClassName) == 0)
									g_aMobileMsg->push_back(new CMobileMsgWnd(hwnd));
								else
									g_aInstantMsg->push_back(new CInstantMsgWnd(hwnd));
							}
							else
							{
								TRACE("*** ERROR: Instant Message window can't be hooked");
							}
						}
					}
					else
					{
						if(g_mpWnd)
							g_mpWnd->StartGlobalTimer();
					}
				}
				catch(...)
				{
					TRACE("ERROR: An exception was thrown in MessengerPlusGlobalHook (Instant Message window)");
					TRACEFLUSH;
				}
			}

			//Notification window
			else if(_tcscmp(szClass, CNotificationWnd::m_sClassName4) == 0
				|| _tcscmp(szClass, CNotificationWnd::m_sClassName5) == 0)
			{
				try
				{
					if(CPreferences::GetMPHookState() > 0)
					{
						if(!CHookedWnd::IsWindowHooked(hwnd))
						{
							TRACE("Initialize will be called from notification hook");
							Initialize();
							if(g_bInitialized)
								g_aNotificationWnd->push_back(new CNotificationWnd(hwnd));
							else
							{
								TRACE("*** ERROR: notification window can't be hooked");
							}
						}
					}
					else
					{
						if(g_mpWnd)
							g_mpWnd->StartGlobalTimer();
					}
				}
				catch(...)
				{
					TRACE("ERROR: An exception was thrown in MessengerPlusGlobalHook (Notification window)");
					TRACEFLUSH;
				}
			}

			//Systray hidden notification window
			else if(_tcscmp(szClass, CSysTrayWnd::m_sClassName4) == 0
				|| _tcscmp(szClass, CSysTrayWnd::m_sClassName5) == 0)
			{
				try
				{
					//Be sure that this is not one of the banned application that uses the same window class
					if(VerifyBannedApplication())
					{
						if((!g_wndSysTrayMsg || !g_wndSysTrayMsg->IsWindowHooked())
							&& !CHookedWnd::IsWindowHooked(hwnd))
						{
							TRACE("QuickInitialize will be called from systray window hook");
							QuickInitialize();
							if(g_bQuickInitialized)
								g_wndSysTrayMsg = new CSysTrayWnd(hwnd);
							else
							{
								TRACE("*** ERROR: systray window can't be hooked");
							}
						}
					}
				}
				catch(...)
				{
					TRACE("ERROR: An exception was thrown in MessengerPlusGlobalHook (Systray window)");
					TRACEFLUSH;
				}
			}
		}
		catch(...)
		{
			TRACE("ERROR: An exception was thrown in MessengerPlusGlobalHook");
			TRACEFLUSH;
		}
	}

	//Properly chain the hooks
	return CallNextHookEx(g_hhGlobalHook, nCode, wParam, lParam);
}