Monitoring the input of the barcode scanner may result in partial data loss #466
Description
Hi,
When I am using the jcef framework to develop Windows desktop programs, I use jnativehook to listen to the barcode scanner and keyboard input. When I use the barcode scanner to continuously and quickly scan the code, there may be a shortage of execution of the NativeKeyListener callback method. For example, barcode 6901028240410 has a total of 13 digits, but nativeKeyTyped only executes 12 times, resulting in outputs of 6, 9, 0, 1, 2, 8, 2, 4, 0, 4, 1, 0.
My program is as follows:
private void registerScanListener() {
try {
scanLogger.setLevel(java.util.logging.Level.OFF);
GlobalScreen.setEventDispatcher(new SwingDispatchService());
GlobalScreen.registerNativeHook();
}
catch (NativeHookException e) {
e.printStackTrace();
}
GlobalScreen.addNativeKeyListener(new NativeKeyListener() {
@Override
public void nativeKeyTyped(NativeKeyEvent nativeKeyEvent) {
if (Character.isLetterOrDigit(nativeKeyEvent.getKeyCode())) {
System.out.println(NativeKeyEvent.getKeyText(nativeKeyEvent.getKeyCode()));
}
}
@Override
public void nativeKeyPressed(NativeKeyEvent nativeKeyEvent) {
}
@Override
public void nativeKeyReleased(NativeKeyEvent nativeKeyEvent) {
}
});
}