Tooltip notification. Check for update fixes.

src/plugin/PluginClass.cpp

 #include "PluginStdAfx.h"
 
 #include "PluginClass.h"
 #include "PluginSettings.h"
 #include "PluginSystem.h"
 #ifdef SUPPORT_FILTER
 #include "PluginFilter.h"
 #endif
 #include "PluginMimeFilterClient.h"
 #include "PluginClient.h"
@@ skipping 577 matching lines @@
       {
         m_isInitializedOk = true;
         if (!InitObject(true))
         {
           //                                    Unadvice();
         }
         UpdateStatusBar();
       }
     }
   }
-  if (notificationMessage.IsVisible())
-  {
-    notificationMessage.Hide();
-  }
+  notificationMessage.Hide();
   DEBUG_GENERAL("Tab change end");
   return VARIANT_TRUE;
 }
 
 // This gets called whenever there's a browser event
 STDMETHODIMP CPluginClass::Invoke(DISPID dispidMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS* pDispParams, VARIANT* pvarResult, EXCEPINFO* pExcepInfo, UINT* puArgErr)
 {
   WCHAR tmp[256];
   wsprintf(tmp, L"Invoke: %d\n", dispidMember);
   DEBUG_GENERAL(tmp);
@@ skipping 1187 matching lines @@
   case WM_WINDOWPOSCHANGING:
     {
       RECT rect;
       GetWindowRect(pClass->m_hPaneWnd, &rect);
       if (pClass->notificationMessage.IsVisible())
       {
         pClass->notificationMessage.Move(rect.left + (rect.right - rect.left) / 2, rect.top + (rect.bottom - rect.top) / 2); 
       }
     }
     break;
+  case WM_WINDOWPOSCHANGED:
+    {
+      WINDOWPOS* wndPos = reinterpret_cast<WINDOWPOS*>(lParam);
+      if (wndPos->flags & SWP_HIDEWINDOW)
+      {
+        pClass->notificationMessage.Hide();
+      }
+    }
+    break;
   case WM_ALREADY_UP_TO_DATE:
     {
       Dictionary* dictionary = Dictionary::GetInstance();
       std::wstring upToDateText = dictionary->Lookup("updater", "update-already-up-to-date-text");
       std::wstring upToDateTitle = dictionary->Lookup("updater", "update-already-up-to-date-title");
       pClass->notificationMessage.SetTextAndIcon(upToDateText, upToDateTitle, TTI_INFO);
     }
     break;
   case WM_UPDATE_CHECK_ERROR:
     {
@@ skipping 143 matching lines @@
         }
       }
     }
 
     hTabWnd = ::GetWindow(hTabWnd, GW_HWNDNEXT);
   }
 
   return hTabWnd;
 
 }