Starting application in windows xp from service to the log..

Archived from groups: microsoft.public.windowsxp.basics (More info?)

Hello,

I have one service that will get start on the start of window. Now I am
using one normal windows application to show service's messages to
user. Now I want to start this normal windows application (if it is not
running already) when service need to show some messages to user. I am
using following code to do that in service.

STARTUPINFO si;
PROCESS_INFORMATION ProcessInformation;

si.cb = sizeof(STARTUPINFO);
si.lpReserved = NULL;
si.lpTitle = NULL;
si.lpDesktop = "WinSta0\\Default";
si.dwX = si.dwY = si.dwXSize = si.dwYSize = 0L;
si.dwFlags = 0;;
si.wShowWindow = SW_SHOW;
si.lpReserved2 = NULL;
si.cbReserved2 = 0;
if (CreateProcess(NULL, "D:\\ServiceMessageDialog.exe", NULL, NULL,
FALSE,
0, NULL, NULL, &si, &ProcessInformation))
{
CloseHandle(ProcessInformation.hProcess);
CloseHandle(ProcessInformation.hThread);
}

The problem with this is in case of windows 2000 it starts the exe
correctly. In case of XP when 2 or more user is logged in then above
code start the exe in the first logged in user. Now I have a handle to
the session in which I need to start normal windows application to show
service's messages but I don't know how to use this session handle to
start a process in that session. Any help is appreciated.

Thanks in advance,
Bhavesh