Inno Setup：WaitForSingleObject返回无效的ProcessHandle

Question

当我运行此代码时，calc.exe启动，但我无法将进程句柄分配给作业。 该过程开始，但句柄无效？

我哪里出错了？

GetLastError（）的结果始终为6.

我遵循了这个教程： Inno Setup Exec() function Wait for a limited time

const
  INFINITE=                   $FFFFFFFF;
  SEE_MASK_NOASYNC=           $00000100;
  SEE_MASK_NOCLOSEPROCESS=    $00000040;

type
  TShellExecuteInfo = record
    cbSize: DWORD;
    fMask: Cardinal;
    HWND: HWND;
    lpVerb: string;
    lpFile: string;
    lpParameters: string;
    lpDirectory: string;
    nShow: Integer;
    hInstApp: THandle;    
    lpIDList: DWORD;
    lpClass: string;
    hkeyClass: THandle;
    dwHotKey: DWORD;
    hMonitor: THandle;
    hProcess: THandle;
end;

function ShellExecuteAndWait(
  Filename : String;
  Params : String;
  WorkingDir : String;
  ShowCmd : Integer
) : Integer;
var 
  JobObject : Thandle;
  ExecInfo : TShellExecuteInfo;

  ExitCode : DWORD;
begin

  ExecInfo.fMask := SEE_MASK_NOCLOSEPROCESS;
  ExecInfo.hwnd := 0;
  ExecInfo.lpVerb := 'open';
  ExecInfo.lpFile := Filename;
  ExecInfo.lpParameters := Params;
  ExecInfo.lpDirectory := WorkingDir;
  ExecInfo.nShow := ShowCmd;
  ExecInfo.cbSize := SizeOf(ExecInfo);

  JobObject := CreateJobObject( '' , 'WaitJob');
  ShellExecuteEx(ExecInfo);

  if  not AssignProcessToJobObject( JobObject , ExecInfo.hProcess ) then
  begin
    MsgBox( 'Error during the assign. ' + 'Error code: ' +  IntToStr( GetLastError() ), mbConfirmation, MB_OK); //Returns: 6 - Invalid handler
  end;

  WaitForSingleObject( JobObject , INFINITE );
  GetExitCodeProcess( ExecInfo.hProcess , ExitCode );

  Result := ExitCode;
end;

修改 更多功能原型。

function WaitForSingleObject(
  hHandle : THandle;
  dwMilliseconds : DWORD
  ) : DWORD;
external 'WaitForSingleObject@kernel32.dll stdcall';

function ShellExecuteEx(
  lpExecInfo: TShellExecuteInfo
  ): BOOL; 
external 'ShellExecuteEx{#AW}@Shell32.dll stdcall';

function AssignProcessToJobObject(
  hJob : Thandle;
  hProcess : Thandle
  ): BOOL;
external 'AssignProcessToJobObject@kernel32.dll stdcall';

function CreateJobObject(
  lpSecurityAttributes,
  lpName: string
  ): THandle;
external 'CreateJobObject{#AW}@kernel32.dll stdcall';