Author: Lou Adler 

I am trying to write a launcher program that can launch applications with 
administrator rights, kind of like the option in Windows 2000 to have an 
application "Run As" administrator. I think the way to do this is to use 
createprocess() function with something set in lpProcessAttributes or 
lpThreadAttributes that gives the process or thread administrator attributes. 
Unfortunatily, I'm not sure what to do beyond this. If anyone can give me answers 
as to what I can do next, I would be grateful.

Answer:
1   
2   function CreateProcessWithLogonW(lpUsername, lpDomain, lpPassword: PWideChar;
3     dwLogonFlags: dword; lpApplicationName: PWideChar; lpCommandLine: PWideChar;
4     dwCreationFlags: DWORD; lpEnvironment: Pointer; lpCurrentDirectory: PWideChar;
5     const lpStartupInfo: TStartupInfo; var lpProcessInformation: TProcessInformation):
6     BOOL; stdcall; external 'advapi32.dll';
7   
8   function RunAsUser(const Filename, Domain, Username, Password: string): Boolean;
9   var
10    StartupInfo: TStartupInfo;
11    ProcessInfo: TProcessInformation;
12    wFilename, wDomain, wUsername, wPassword: PWideChar;
13  begin
14    FillChar(StartupInfo, SizeOf(StartupInfo), #0);
15    StartupInfo.cb := SizeOf(StartupInfo);
16    StartupInfo.dwFlags := STARTF_USESHOWWINDOW;
17    StartupInfo.wShowWindow := SW_SHOWNORMAL;
18    GetMem(wFilename, Length(Filename) * SizeOf(WideChar) + SizeOf(WideChar));
19    GetMem(wDomain, Length(Domain) * SizeOf(WideChar) + SizeOf(WideChar));
20    GetMem(wUsername, length(Username) * SizeOf(WideChar) + SizeOf(WideChar));
21    GetMem(wPassword, length(Password) * SizeOf(WideChar) + SizeOf(WideChar));
22    StringToWideChar(Filename, wFilename, Length(Filename) * SizeOf(WideChar)
23      + SizeOf(WideChar));
24    StringToWideChar(Domain, wDomain, Length(Domain) * SizeOf(WideChar)
25      + SizeOf(WideChar));
26    StringToWideChar(Username, wUsername, Length(Username) * SizeOf(WideChar)
27      + SizeOf(WideChar));
28    StringToWideChar(Password, wPassword, Length(Password) * SizeOf(WideChar)
29      + SizeOf(WideChar));
30    Result := CreateProcessWithLogonW(wUsername, wDomain, wPassword, 0, wFilename,
31      nil, 0, nil, nil, StartupInfo, ProcessInfo);
32    if Result then
33    begin
34      WaitForSingleObject(ProcessInfo.hProcess, INFINITE);
35      CloseHandle(ProcessInfo.hProcess);
36      CloseHandle(ProcessInfo.hThread);
37    end
38    else
39      RaiseLastOSError;
40    FreeMem(wFilename);
41    FreeMem(wDomain);
42    FreeMem(wUsername);
43    FreeMem(wPassword);
44  end;