模态运行EXE程序

function ExecShowModal(APath: PChar; ACmdShow: Integer; ATimeout: Longword): Integer;
var
  vStartupInfo: TStartupInfo;
  vProcessInfo: TProcessInformation;
begin
  FillChar(vStartupInfo, SizeOf(TStartupInfo), );
  with vStartupInfo do
  begin
    cb := SizeOf(TStartupInfo);
    dwFlags := STARTF_USESHOWWINDOW or STARTF_FORCEONFEEDBACK;
    wShowWindow := ACmdShow;
  end;
  if CreateProcess(nil, APath, nil, nil, False,
    NORMAL_PRIORITY_CLASS, nil, nil,
    vStartupInfo, vProcessInfo) then
    Result := WaitForSingleObject(vProcessInfo.hProcess, ATimeout)
  else Result := GetLastError;
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
  ExecShowModal('notepad.exe', SW_SHOW, INFINITE);
end;

参考：http://www.cnblogs.com/key-ok/p/3358855.html