Delphi - CreateProcess - execution of several commands

Question

I want to do the following with CreateProcess () - call:

• Change to working copy of svn
• Run svn commands
• Output to file

I try this with the following function

procedure TQPortMainForm.CmdMigrationClick(Sender: TObject);
var
  StartInfo: TStartupInfo;
  ProcInfo: TProcessInformation;
  CreateOk: boolean;
  input: String;
begin
  { fill with known state }
  FillChar(StartInfo, SizeOf(TStartupInfo), #0);
  FillChar(ProcInfo, SizeOf(TProcessInformation), #0);
  StartInfo.cb := SizeOf(TStartupInfo);

  //debug
  input := 'D: && cd D:\Qport\trunk\Qport\ && ' + SVN_PATH + ' log > C:\users\PhilippKober\UNIQUE_NAME_BLUB.txt';

  CreateOk := CreateProcess(nil, PChar(input), nil, nil, false, CREATE_NEW_PROCESS_GROUP + NORMAL_PRIORITY_CLASS, nil,
    nil , StartInfo, ProcInfo);
  { check to see if successful }
  if CreateOk then
    // may or may not be needed. Usually wait for child processes
    WaitForSingleObject(ProcInfo.hProcess, INFINITE);
end;

Nothing just happens. Has anyone understood how to achieve this?

Thank,

Philipp

EDIT 1: I am using Delphi XE - Build 7601: Service Pack 1

EDIT 2: Here is the solution:

var
  StartInfo: TStartupInfo;
  ProcInfo: TProcessInformation;
  CreateOk: boolean;
  input: String;
  path : String;
  cmd : String;
begin
  { fill with known state }
  FillChar(StartInfo, SizeOf(TStartupInfo), #0);
  FillChar(ProcInfo, SizeOf(TProcessInformation), #0);
  StartInfo.cb := SizeOf(TStartupInfo);

  path := 'D:\Qport\trunk\Qport\';
  cmd := 'C:\Windows\System32\cmd.exe';
  //debug
  input := '/C' + SVN_PATH + ' help > C:\users\PhilippKober\UNIQUE_NAME_BLUB.txt';

  CreateOk := CreateProcess(PChar(cmd), PChar(input), nil, nil, false, CREATE_NEW_PROCESS_GROUP + NORMAL_PRIORITY_CLASS, nil,
     Pchar(path), StartInfo, ProcInfo);
  { check to see if successful }
  if CreateOk then
    // may or may not be needed. Usually wait for child processes
    WaitForSingleObject(ProcInfo.hProcess, INFINITE);
end;

Answer 1

You need to provide an executable when you call CreateProcess. I think you are used to calling ShellExecutethe weaker.

cmd.exe, . , cmd.exe, lpCurrentDirectory CreateProcess. /C cmd.exe, .

, input :

input := GetEnvironmentVariable('COMSPEC') + ' /C ' + SVN_PATH + 
  ' log > C:\users\PhilippKober\UNIQUE_NAME_BLUB.txt';

GetEnvironmentVariable('COMSPEC') .

CreateProcess :

CreateProcess(
  nil, 
  PChar(input), 
  nil, 
  nil, 
  False, 
  CREATE_NEW_PROCESS_GROUP or NORMAL_PRIORITY_CLASS, 
  nil,
  'D:\Qport\trunk\Qport', 
  StartInfo, 
  ProcInfo
);

or , +, .

, , , . , CreateProcess . input . UniqueString , , .

, , , , CreateProcess. , :

//WaitForSingleObject(ProcInfo.hProcess, INFINITE); //in case you want to wait for Process to terminate
CloseHandle(ProcInfo.hProcess);
CloseHandle(ProcInfo.hThread);