// example code how to call 12-RunAsStdUser in C/C++


	// start program non-elevated
	ExecuteNonElevated(NULL, szProgram, szParams, FALSE);

	// start several programs non-elevated, keep 12-RunAsStdUser running
	ExecuteNonElevated(NULL, szProgram1, szParams, TRUE);  // keep running
	ExecuteNonElevated(NULL, szProgram2, szParams, TRUE);  // keep running
	...
	ExecuteNonElevated(NULL, szProgramLast, szParams, FALSE);  // stop 12-RunAsStdUser


	// just stop 12-RunAsStdUser
	ExecuteNonElevated(NULL, NULL, NULL, FALSE);



// --------------------------------------------------
	// szSourcePath	-  the path where 12runas.exe and 12srvc.exe have been unzipped to
	// szStartPath	 	-  path to your program that you want to start non-elevated
	// szParams			-  command line parameters for your program
	// bKeepRun		-  TRUE: don't stop, faster if you are going to start more than one program
void ExecuteNonElevated(LPCTSTR szSourcePath, LPCTSTR szStartPath, LPCTSTR szParams, BOOL bKeepRun)
{
	char szCompleteParams[2 * MAX_STRING] = {0};
	char szRunAsPath[2 * MAX_STRING] = {0};

	lstrcpy(szCompleteParams, "");
	if( bKeepRun )
		lstrcat(szCompleteParams, "/keeprunas ");  // don't stop and delete the service

	if( szStartPath && *szStartPath )
	{
		lstrcat(szCompleteParams, "\"");   // path in double-quotes
		lstrcat(szCompleteParams, szStartPath);
		lstrcat(szCompleteParams, "\"");
	}

	if( szParams && *szParams )
	{
		lstrcat(szCompleteParams, " ");
		lstrcat(szCompleteParams, szParams);
	}

	// just stop?
	if( 0 == lstrlen(szCompleteParams) )
		lstrcat(szCompleteParams, "/stoprunas");  // without params it shows a dialog box

	// path to 12runas.exe
	if( szSourcePath && *szSourcePath )
	{
		// the temp path, where everything was unzipped
		lstrcpy(szRunAsPath, szSourcePath);
	}
	else
	{
		// try the path of this module (setup.exe)
		char *pSlash = NULL;
		GetModuleFileName(NULL, szRunAsPath, MAX_PATH);
		pSlash = strrchr(szRunAsPath, '\\');
		if( pSlash )
			*pSlash = 0;	// cut last slash
	}

	AddEndSlash(szRunAsPath);
	lstrcat(szRunAsPath, "12runas.exe");

	// start 12-RunAsStdUser
	ShellExecute(NULL, NULL, szRunAsPath, szCompleteParams, NULL, SW_SHOWNORMAL);
}

// --------------------------------------------------
void AddEndSlash(LPTSTR szPath)
{
	// is last char a backslash? otherwise add one
	DWORD dwStrLen = 0;
	dwStrLen = lstrlen(szPath);
	if( dwStrLen > 0 )
		if( '\\' != szPath[dwStrLen - 1] ) 
			lstrcat(szPath, "\\");
}