Make WinVNC service mode work on Windows Vista and beyond.
Patch by Jochen Tucht, fixes bug 135.



git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@5158 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/win/rfb_win32/LaunchProcess.cxx b/win/rfb_win32/LaunchProcess.cxx
index 56a712e..16ced64 100644
--- a/win/rfb_win32/LaunchProcess.cxx
+++ b/win/rfb_win32/LaunchProcess.cxx
@@ -44,10 +44,20 @@
   await();
   returnCode = STILL_ACTIVE;
 
+  DWORD size;
+  char desktopName[256];
+  char buf[256];
+  HDESK desktop = GetThreadDesktop(GetCurrentThreadId());
+  if (!GetUserObjectInformation(desktop, UOI_NAME, buf, 256, &size))
+    throw rdr::SystemException("unable to launch process", GetLastError());
+
+  snprintf(desktopName, 256, "WinSta0\\%s", buf);
+
   // - Create storage for the process startup information
   STARTUPINFO sinfo;
   memset(&sinfo, 0, sizeof(sinfo));
   sinfo.cb = sizeof(sinfo);
+  sinfo.lpDesktop = desktopName;
 
   // - Concoct a suitable command-line
   TCharArray exePath;