notify user that a download is in progress

GateKeeper.cpp

@@ -1,10 +1,13 @@
-#include "stdafx.h"
+#include "stdafx.h"
 
 #include "GateKeeper.h"
 #include "pEpCOMServerAdapter.h"
+#include "CMainWindow.h"
 
 using namespace std;
 
+extern CMainWindow mainWindow;
+
 // from https://msdn.microsoft.com/en-us/library/windows/desktop/dd388945(v=vs.85).aspx
 
 struct PUBLIC_KEY_VALUES {
@@ -519,6 +522,9 @@ namespace pEp {
             DWORD reading;
             InternetReadFile(hUrl, iv, sizeof(iv), &reading);
 
+            if (reading)
+                mainWindow.ShowNotificationInfo(_T("Downloading update"), _T("An update for p≡p arrived and is being downloaded."));
+
             if (reading) do {
                 static char buffer[1024 * 1024];
                 BOOL bResult = InternetReadFile(hUrl, buffer, 1024 * 1024, &reading);