Injecting key events at the QApplication level

[sraju]

I am trying to inject the key event to QApplication using following code.

KeyHandler.h

class KeyHandler :
public QObject,
public QWSKeyboardHandle
{
public:
void initialize();

protected slots:
void injectKeyEvent();

private:
int fd;
QSocketNotifier *pKeyNotifier;
...
...
...

};

KeyHandler.cpp



#include <iostream>

#include <unistd.h>

#include <fcntl.h>

#include <linux/input.h>

......

const char* POWER_KEY_DEVICE = "/dev/event0";


void KeyHandler::initialize()
{

fd = open(POWER_KEY_DEVICE, O_RDONLY, 0);

if(0 <= fd)
{
std::cerr<<"Could not open file descriptor the key device.";
}

pKeyNotifier = new QSocketNotifier(fd, QSocketNotifier::Read, this);

connect(
pKeyNotifier,
SIGNAL(activated(int)),
this,
SLOT(injectKeyEvent())
);
}


KeyHandler::injectKeyEvent()
{
input_event sampleKeyEvent;

ssize_t readStatus = read(fd, &sampleKeyEvent, sizeof(struct input_event);

if ((0 < readStatus) && (KEY_POWER == sampleKeyEvent.code))
{
// Prepare QKeyEvent with Q Key code
QKeyEvent *pKeyEvent = new QKeyEvent(
((0 == sampleKeyEvent.value) ? QEvent::KeyRelease : QEvent::KeyPress),
Qt::Key_Q,
Qt::NoModifier
);

std::cout << "Post QKeyEvent " << std::endl;
QCoreApplicationstEvent(qApp, pKeyEvent);

/* Used sendEvent for test:
QCoreApplication::sendEvent(qApp, &keyEvent);
*/
}
}


Question:

- Is this way to inject Key input to QApplication? OR
- Am I missing anything here?
- Will the event posted to QApplication always be captured by MainWidget?