keyboard

问题 What's the simplest way to identify whether a keystroke is a printable character (one that should appear in a textbox) or not? I want to separate keys like F1, Home, etc. from those that would actually appear in a textbox. I am trying to avoid a massive IF statement by identifying all the non-printable characters myself. Using an event like KeyUp, KeyPress etc. is not an option due to the design of the control. 回答1: There is no simple way. And you should never put yourself in this spot. The

问题 What's the simplest way to identify whether a keystroke is a printable character (one that should appear in a textbox) or not? I want to separate keys like F1, Home, etc. from those that would actually appear in a textbox. I am trying to avoid a massive IF statement by identifying all the non-printable characters myself. Using an event like KeyUp, KeyPress etc. is not an option due to the design of the control. 回答1: There is no simple way. And you should never put yourself in this spot. The

问题 Background: I recently purchased a Motorola XOOM Tablet along with the Desktop Dock and Bluetooth Keyboard accessories. The dock and keyboard work great, but when I take the tablet off the dock to move away from my desk, the keyboard still remains paired with the device and I have to manually change the settings to use the soft keyboard. The same goes for when I set it back on the dock, I need to manually switch it back. It's not a huge problem, but it would be nice not to have to think about

问题 Bar Code Scanner and Keyboard. NOTE: My Bar Code Scanner is USB Type. Then... What function must be use to trigger the keyboard if i'm at auto.aspx page? I tried this code but no success: var barcode = document.getElementById('barcodenum'); barcode.addEventListener("keypress", function() { alert("Please use Barcode Scanner!"); document.getElementById('barcodenum').value = "";}, true); 回答1: As pointed out by @Robert Skarzycki above, i doubt you can integrate with the scanner using a web page.

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I am looking to create a JavaScript app that relies heavily on keyboard shortcuts, is here a open-source library that answers those needs with cross-browser support and an easy Api? 回答1: KeyMaster A simple micro-library for defining and dispatching keyboard shortcuts. It has no dependencies. // define short of

问题 I want to show the virtual keyboard with Prev, Next Buttons above the keyboard. When the user clicks prev button, cursor should move to the previous edittext input field and clicking on next button should go to the next edittext field in the view. IF we open any page in android browser which asks input, we can see this kind of keyboard. I need that to be implemented for the normal activity which I created. May I know how to do this ? Thanks, Senthil.M 回答1: For Next Button just add one line to

问题 Using Java, is it possible to detect user actions, such as key-presses, mouse-button-presses, and/or mouse's screen location, without the use of GUI elements? If it is, how could I implement it? Otherwise, what are the alternatives? The only StackOverflow source i found on this matter is this question, which is unanswered. And the only sources I found outside StackOverflow on this matter point to an "Invisible GUI" solution, wish is something i really want to avoid. 回答1: It can be implemented

问题 I'm creating namespaced events with jquery. When I use the following function with code=112, a function, bool=false, everything works fine in FF and the F1 key submits to my function and the event does not bubble up to open the firefox help in a new tab. function bindKeyFunc(code, func, bool){ $(document).bind('keypress.' + code, function(e){ var c = (e.keyCode ? e.keyCode : e.which); //console.log(c); if ( code == c) { //e.stopPropagation(); //e.preventDefault(); func(); return bool; } }); }

问题 I'm creating namespaced events with jquery. When I use the following function with code=112, a function, bool=false, everything works fine in FF and the F1 key submits to my function and the event does not bubble up to open the firefox help in a new tab. function bindKeyFunc(code, func, bool){ $(document).bind('keypress.' + code, function(e){ var c = (e.keyCode ? e.keyCode : e.which); //console.log(c); if ( code == c) { //e.stopPropagation(); //e.preventDefault(); func(); return bool; } }); }

问题 I'm looking for a way to inject a keystroke into the OS keyboard input buffer, like when you click a button the program inserts one (or more) keyboard strokes. I wanted to do this in java because I want to run this in (win,linux and osx). I guess that I'll have to make use of the JNI, do anyone have some ideas? Thanks all stackoverflowers ;) 回答1: My guess is that the java.awt.Robot class will do this for you: new Robot().keyPress(...); http://download.oracle.com/javase/6/docs/api/java/awt