创建进程得到窗口句柄

创建进程后得到该进程的主窗口句柄

var
  StartUpInfo: TStartUpInfoA;
  ProcessInfo: TProcessInformation;
  gui: tagGUITHREADINFO;
  hAcount: HWND;

begin
  FillChar(StartUpInfo, Sizeof(TStartUpInfo), #0);
  FillChar(ProcessInfo, Sizeof(TProcessInformation), #0);
  StartUpInfo.cb := Sizeof(TstartUpInfo);
  try
    CreateProcessA(PAnsiChar(FszQQPath), nil, nil, nil, False, 0, nil, nil, StartUpInfo, ProcessInfo);
  except
  end;
  WaitForInputIdle(ProcessInfo.hProcess, INFINITE);
  FillMemory(@gui, Sizeof(tagGUITHREADINFO), 0);
  gui.cbSize   :=   Sizeof(tagGUITHREADINFO);
  //这个可以得到刚才创建进程的主窗口句柄
  GetGUIThreadInfo(ProcessInfo.dwThreadId, gui);
  //得到子窗口句柄
  hAcount := FindWindowExA(gui.hwndActive, 0, 'ATL:30A441A8', PAnsiChar(0));

  //激活窗口

  SetForegroundWindow(FrmClient.Handle);
  SetActiveWindow(FrmClient.Handle);
  SendMessageA(hAcount, WM_SETTEXT, 0, LPARAM(szAcount));
  SendKeys(PAnsiChar(FszPas), False);
  SendKeys('{ENTER}',False);
end;

  //可以结束自己创建的进程

  TerminateProcess(ProcessInfo.hProcess, 0);