I have a ZEBRA device with Android 11. How do I use key event.
When a open logcat you can see in it OnKeyEvent and TriggerKeyEvent. Does anyone know how to handle this event on a call from the keyboard .?
Related
I have an app which uses CGEvent taps to catch key presses and mouse events.
Example ..
CGEventTapCreate(kCGHIDEventTap, kCGTailAppendEventTap,
1, eventMask, keyUp, #"mydata");
I also generate events.
Everything works fine except when this app ( PrivilegedHelperTool ) is ran as a pre login launch agent(login window). The app shows up fine but all my taps return null and my generated events don't work.
Is there something else than "kCGHIDEventTap" when in pre login state?
I've gone as far as using IOKit to catch mouse movements(works), but when implementing key press it seems this IOKit stuff is deprecated and most suggestions say to use CGEvent Equivalents.
Please check this thread
Mac event tap just delays discarded events
Your event tap should work on logon window too (even injection) but has few limitation, you can not filter the password dialog f.e (not surprisingly)
I'm building a little app which needs to recognize if certain keys on the keyboard were pressed. In this case the arrow keys. The app must take action when these keys get pressed, even if it's not the frontmost and has no focus.
Is this possible to do? What would I have to do to receive these keyboard events no matter where they happen?
You do this by registering a hotkey using Carbon's RegisterEventHotKey function. There are also open source libraries available that make this easier, for example SGHotKeysLib.
I want to inject a key event into my Android emulator from command line. Does anybody know how to inject a window key event to an application from command line? Or more specifically, how can I inject a key event to Android emulator?
Thanks.
I am creating a virtual keyboard for my application via Input Method Kit (IMK).
However I am not able to simulate a keyboard event by pressing a button.
Is there any library I can used for keyboard event simulation?
Are there any reference materials/solutions for this problem?
See the IMKTextInput Protocol Reference, you need to call insertText:replacementRange:
[client insertText:text replacementRange:NSMakeRange(NSNotFound, NSNotFound)];
where text is an instance of NSString.
Can windows detect when a monitor, mouse or keyboard is disconnected from the computer? If so what Win32 API is used for this?
Not sure about the monitor, but the keyboard and mouse being disconnected should fire off a
WM_DEVICECHANGE message if they are USB devices. See this link for details: WM_DEVICECHANGE
There is a good discussion of WM_DEVICECHANGE on this forum, relating to its usage with HID devices (Mouse/Keyboard/etc.)
For more detailed notification you can use the RegisterDeviceNotification function
RegisterDeviceNotification
To react to monitor changes, handle WM_DISPLAYCHANGE (see http://msdn.microsoft.com/en-us/library/dd145210%28VS.85%29.aspx).
As far as I recall there is no way to detect PS/2 disconnection events. Monitor and USB can be trapped but I don't know how.