keyrelease | 易学教程

Listening to keyboard events without trapping them?

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问题 I'm writing an command-line application which listens for Control key release events in X Windows and alerts another process when it detects them. Being new to GNU/Linux, I'd prefer avoiding to fumble with GCC and therefore I'm looking for a scripting-based solution. Since I know a bit of Python, it seemed natural to go for a Python-based solution, and after scavenging the Internet for examples and reading Python Xlib docs, I've put together this programs which works, but with a caveat: it

How to know when a user has really released a key in Java?

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(Edited for clarity) I want to detect when a user presses and releases a key in Java Swing, ignoring the keyboard auto repeat feature. I also would like a pure Java approach the works on Linux, Mac OS and Windows. Requirements: When the user presses some key I want to know what key is that; When the user releases some key, I want to know what key is that; I want to ignore the system auto repeat options: I want to receive just one keypress event for each key press and just one key release event for each key release; If possible, I would use items 1 to 3 to know if the user is holding more than

handle multiple key presses ignoring repeated key

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问题 I had asked this in the comments section of another question (> How do I handle simultaneous key presses in Java?), and was asked to make a new question altogether. My problem is that when I create an ArrayList of keypresses they are not removed fast enough via the keyReleased event if the user holds down the keys. I want movement to be with "asdf" and North, East, South, West, NorthEast... etc. Here is my code for both events: @Override public void keyPressed(KeyEvent e) { if(chatTextField

How to know when a user has really released a key in Java?

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问题 (Edited for clarity) I want to detect when a user presses and releases a key in Java Swing, ignoring the keyboard auto repeat feature. I also would like a pure Java approach the works on Linux, Mac OS and Windows. Requirements: When the user presses some key I want to know what key is that; When the user releases some key, I want to know what key is that; I want to ignore the system auto repeat options: I want to receive just one keypress event for each key press and just one key release