not able to sendevent from keyboard notification

[IL]

Hi,
I am still working on my target application beaglebone like.
I try to pass my target keyboard notification into the QApplication.
In my QT main class I override the virtual function void keyPressEvent(QKeyEvent)*
I am tracking my application and everything is looking good except reaching the above function
Also use:

• SendEvent(receiver, QKeyEvent)
• processEvent()
  please advice!

My code looks like this:
mainwindow.h file

#include <QMainWindow>
#include <QKeyEvent>

namespace Ui {class PlatformApp;}

class PlatformApp : public QMainWindow
{
Q_OBJECT

public:
explicit PlatformApp(QWidget *parent);
~PlatformApp();
void keyPressEvent(QKeyEvent *event);

private slots:
...
private:
...
};

mainwindow.cpp file

PlatformApp::PlatformApp(QWidget *parent) :
QMainWindow(parent), orientation(0),
ui(new Ui::PlatformApp)
{...}

PlatformApp::~PlatformApp(){ delete ui;}

void PlatformApp::keyPressEvent(QKeyEvent *event)
{
... // NEVER GET INTO THIS FUNCTION!!!

     switch(event->key())
     {
     case Qt::Key_Enter:
        {
      ... // 
      break;
        }
        ...
        
        default:
        break;
     }

QMainWindow::keyPressEvent(event);
}

hmimngr.h file - main application

class QApplication;

class CHmiMngr
{
public:
CHmiMngr(...);
~CHmiMngr();
...

private:
QApplication* m_qtApplication;
PlatformApp* m_qtMainWindow;
};

hmimngr.cpp file // main application

CHmiMngr::CHmiMngr(ErrorCode &initStatus):
m_osHelper(),
m_kbdFd(0),
m_qtApplication(0),
m_qtMainWindow(0),
{
m_kbdFd = open(KBD_DEV_NAME_FULL, O_RDWR);
if (m_kbdFd == -1)
{
initStatus = E_FAIL;
return;
}
}

CHmiMngr::~CHmiMngr(){}

void CHmiMngr::initQtApplication()
{
m_qtApplication = new QApplication(argc,(Char**) &argv[0]);
m_qtMainWindow = new PlatformApp(this);
...
}

void CHmiMngr::handleIncomingMsg(SEYOSEvent event)
{
if ((int)event.Data == m_kbdFd)
{
handleKeyBoard(event);
}
}

void CHmiMngr::handleKeyBoard(SEYOSEvent event)
{
Int32 rxBytes = read(m_kbdFd,(void*)(&keyValue), 4);

switch(keyValue)
{
case KBD_KEY_RIGHT / LEFT / UP / DOWN:
{
QObject* receiver = qobject_cast<QObject*>(m_qtMainWindow);

     QKeyEvent keyEvent(QEvent::KeyPress, Qt::Key_<somthing>, Qt::NoModifier);
     QApplication::sendEvent(receiver, &keyEvent);
  }
  break;

...

QApplication::processEvents();
}

[SGaist]

Hi,

Because usually, it's the central widget of a QMainWindow that will have the keyboard focus thus get the keyPress/Release etc. events.

You can put an event filter on that widget to do what you want.

Hope it helps