code:

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// RunAS.cpp : Defines the entry point for the console application.


// Logon and run an app as a different user
//           1      2         3       4       5        6 
// params: user, password, domain, appname, folder, commandline
// Batch file example:
// RunAs Administrator, 123456,,D:\Installer.exe, d:\, -i


#include "stdafx.h"

// params user, password, domain, appname, folder, commandline

int main(int argc, char* argv[])
{
          
   int LOGON_WITH_PROFILE = 1;
   int LOGON_NETCREDENTIALS_ONLY = 2;
         
    int res;               // results
    int creationflags;  // flags to pass to define window type
    int myerrorlevel;   // errorlevel for this function
    static PROCESS_INFORMATION myprocessinfo; // process return
   static STARTUPINFO mystartupinfo;
   
    // set window flags
    creationflags=CREATE_DEFAULT_ERROR_MODE | CREATE_NEW_CONSOLE | CREATE_NEW_PROCESS_GROUP;
   
    // initailise the startupinfo structure
    ::ZeroMemory(&mystartupinfo, sizeof(mystartupinfo));

    // load in size of structure
   mystartupinfo.cb = sizeof(mystartupinfo);

    //  CreateProcessWithLogonW parameters:     
    //  LPCWSTR lpUsername,
    //  LPCWSTR lpDomain,
    //  LPCWSTR lpPassword,
    //  DWORD dwLogonFlags,
    //  LPCWSTR lpApplicationName,
    //  LPWSTR lpCommandLine,
    //  DWORD dwCreationFlags,
    //  LPVOID lpEnvironment,
    //  LPCWSTR lpCurrentDirectory,
    //  LPSTARTUPINFOW lpStartupInfo,
    //  LPPROCESS_INFORMATION lpProcessInfo
   
   // todo
   // concatenate commandline arguments into a string
    // argv[6 and +] should be moved into a string

    // Start the process
   res=CreateProcessWithLogonW(argv[1], argv[3], argv[2], LOGON_WITH_PROFILE,
    argv[4], argv[6], creationflags, NULL, argv[5], &mystartupinfo, &myprocessinfo);

    
    // return errorlevel
   myerrorlevel=0;
   if (res==0){
         myerrorlevel=1;
    }
    else {
       // close unwanted handles
         CloseHandle (myprocessinfo.hThread);  // close the handle to the main thread, since we don't use it
       CloseHandle (myprocessinfo.hProcess); // close handle to the process
    }
   return (myerrorlevel);
}

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