send key even to other aplication

Hi. I have bug in one aplication. It have some problem with logout in inactivity and reconnect. I need program which create key event in this aplication for stay online in it.
I have aplication with timer, buttons, key event for main aplication button...
I need code, when i can use other aplication. I cant find in examples or in google. Delphi something as this can do, i hope qt can do it too.

My code...

Code:

#include "mainwindow.h"
#include "ui_mainwindow.h"
 
#include <QTimer>
 
#include <QWidget>
#include <QDesktopWidget>
 
#include "windows.h"    keybd_event;
// key_codes https://msdn.microsoft.com/en-us/library/ms927178.aspx
 
class class_ppdata {
  public:
    bool start;
    QString window;
    QString timer_time;
    int timer_value;
    QString key;
};
 
class_ppdata PP_DATA;
//QList<class_ppdata> PP_DATA;
//QList<class_ppdata> PP_DATA = {"start":""; "window":""; "timer":""; "key":""};
//int timerId;
 
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
connect(&timer, SIGNAL(timeout()), this, SLOT(TimerEvent()));
}
 
MainWindow::~MainWindow()
{
    delete ui;
}
 
 
 
void MainWindow::TimerEvent()
{
 // std::cout << "Timer expired." << std::endl;
  //this->dialog.cancel();
    PP_DATA.timer_value += 1;
    //ui->label_5->setText(QString::number(PP_DATA.timer_value) );
    ui->label_6->setText("Stav: casovac " + QString::number(PP_DATA.timer_value));
}
 
 
void MainWindow::on_pushButton_clicked()
{
int a;
    //QTimer* timer = new QTimer(this);
    if (PP_DATA.start ) //|| !timer->isActive()
      {
      //timerId = startTimer(1000);
      a = PP_DATA.timer_time.toInt();
      //ui->pushButton->setText(QString::number(a));
      if (a>=1000 && a<=1200000) // 1s az 20*60 s
        {
        ui->pushButton->setText("Zastavit");
        PP_DATA.start = PP_DATA.start ? false : true;
        PP_DATA.timer_value = 0;
        this->timer.stop();
        timer.start(a);
        }
// key pomoci QT
//      QKeyEvent *event = new QKeyEvent(QEvent::KeyPress, Qt::Key_F1, Qt::NoModifier, "Red", 0);
//      QApplication::postEvent(this, event);
// key pomoci "windows.h"
//            keybd_event(VK_F1, 0, 0, 0);
//            keybd_event(VK_F1, 0, KEYEVENTF_KEYUP, 0);
 
      keybd_event(VK_F1, 0, 0, 0);
      keybd_event(VK_F1, 0, KEYEVENTF_KEYUP, 0);
 
    }
    else
      {
      ui->pushButton->setText("Spustit");
      //killTimer(timerId);
      timer.stop();
      PP_DATA.start = PP_DATA.start ? false : true;
      }
}
 
void MainWindow::on_plainTextEdit_textChanged()
{
     PP_DATA.window = ui->plainTextEdit->toPlainText();
}
 
void MainWindow::on_keySequenceEdit_editingFinished()
{
    //PP_DATA.key = ui->keySequenceEdit->data;
}
 
void MainWindow::on_plainTextEdit_2_textChanged()
{
     PP_DATA.timer_time = ui->plainTextEdit_2->toPlainText();
 
}
 
void MainWindow::on_actionMenu_triggered()
{
    this->close();
}
 
//#include <QDesktopWidget>
 
void MainWindow::on_actionNapoveda_triggered()
{
 
/*
  int WIDTH = 250;
  int HEIGHT = 150;
 
  int screenWidth;
  int screenHeight;
 
  int x, y;
 
  QWidget w;
 
  QDesktopWidget *desktop = QApplication::desktop();
 
  screenWidth = desktop->width();
  screenHeight = desktop->height();
 
  x = (screenWidth - WIDTH) / 2;
  y = (screenHeight - HEIGHT) / 2;
 
  //w.resize(WIDTH, HEIGHT);
  w.move( x, y );
*/
 
ui->label_6->setText("Stav: napoveda - event F1" + screenHeight);
}