keyboard-events

问题 I'm making a Windows application that captures keyboard input globally. When a user uses the CTRL + ALT + G shortcut combo the application uses SendKey.Send(Guid.NewGuid().ToString()); to type a generaged GUID into whatever text field is in focus. And it should do this regardless of the application taking the input. It works exactly as I intended the first time you type CTRL + ALT + G but subsequent attempts result in nothing, or just very infrequent successes. I mean, it all should be very

问题 I'm using OpenCV in python on OSX(10.10.5). I'm just starting out, so I may have made a silly mistake here. However, I haven't found anything that addresses this issue. I have a mouse callback function that makes a list containing the coordinates of each point that is clicked on in a loaded image. Now I'd like to use the flags in the mouse callback function to control whether I append coordinates to the list or whether I instead append "NA,NA" (e.g. if a point is missing from an image, I

问题 I don't know much about how it works. My guess is JavaScript, but anyway. When you go to your dashboard in Tumblr you can go back and forth between pages in your feed with your keyboard. ← to go forward to newer posts and → to go to older posts. Can someone help me figure out how they do this. 回答1: Well, what you have do is set up a "keyup" event listener for your document element that reads which key your user pressed, then execute an action if the keycode matches the code for your left or

问题 I was asked to implement ctrl+mousewheel event for our page site in order to change image offset on user zoom in or zoom out. I found this old answer Override browsers CTRL+(WHEEL)SCROLL with javascript and I`ve tried to do the same. I downloaded the jQuery Mouse Wheel Plugin for the implementation and here is my code: var isCtrl = false; $(document).on('keydown keyup', function(e) { if (e.which === 17) { isCtrl = e.type === 'keydown' ? true : false; } }).on('mousewheel', function(e, delta) {

问题 I was asked to implement ctrl+mousewheel event for our page site in order to change image offset on user zoom in or zoom out. I found this old answer Override browsers CTRL+(WHEEL)SCROLL with javascript and I`ve tried to do the same. I downloaded the jQuery Mouse Wheel Plugin for the implementation and here is my code: var isCtrl = false; $(document).on('keydown keyup', function(e) { if (e.which === 17) { isCtrl = e.type === 'keydown' ? true : false; } }).on('mousewheel', function(e, delta) {

问题 Is it possible to disable keyboard input to a control? For instance a ListView ? How do I do that? I've tried overriding the KeyUp KeyDown events but apparently that was not the way? IsEnabled is a good solution, however I only wish to disable keyboard interaction and leave mouse interaction intact. 回答1: Handling the KeyDown event is too late, but you can handle the PreviewKeyDown event and that should give you the behavior you are looking for: private void MyListBox_PreviewKeyDown(object

问题 What signals/functions should I use to get keyboard input in GTK+3? I have looked around and the only tutorials I know of that cover GTK+3 (zetcode and gnome developer) don't seem to cover that. Anyone can point me in the right direction? 回答1: Thanks xing for your advice, It was really helpful. I was lost, hence my question that is perhaps too general to escape the traditional downvoting of part of the C community. I will summarize here how to handle keyboard events in GTK3, which I hope will

问题 I'm logged into a virtual machine using vmware workstation 6.5-7.0.1 or vmware player 3.0.0. I'm working inside the virtual machine. Then I press a key (for example the Delete-Key, but it should work with every key) inside the virtual machine. I want to recognize the "key-press-event" in my C# application which is running outside of the virtual machine. Can you think of any way to do this? 回答1: I am not 100% sure if you can actually hook into the VM unless there's an SDK that you can download

问题 I want to create a virtual keyboard in osx. Is it possible? I mean can I make a program that gives same signals than real keyboard. Example of this kind of keyboard would be onscreen keyboard, or keybord viewer (does it have necessary interface btw). How low should I start? Should I make a device driver e.g. virtual (wireless) keyboard? Or does cocoa etc. have the necessary stuff? The requirements I have are: - a list of tuples (time, key_down/key_up, key_code) corresponds to person typing -

问题 I am building an multimedia console based on an old computer running Win7. I want to control the players with a numeric keyboard. I can't use the common media control devices because they respond only to windows media player. I will use the KVM Player, Winamp and others. So each one has it's own set of keyboard shortcuts for play, pause, foward, volume etc. For that I am thinking of building a Delphi application that detects the foreground application and gets from a database the shortcuts