keycode | 易学教程

Are they really the virtual codes?

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Virtual key codes for some keys like shift, [ , ],Del etc are displayed as a different value in java compared to C++/C. For example : Key Java C / C++ Shift 16 160 [ 91 219 ] 93 221 \ 92 220 Del 127 46 Window 524 91 What is the reason for this ? Are these codes the virtual codes or they are a different type ? For the keys including alphabets,numbers,the function keys(F1-F12),backspace,`,etc are the same. I might be misunderstanding a concept,in that case please clarify. Checked in C/C++ KBDLLHOOKSTRUCT * kbhook = (KBDLLHOOKSTRUCT *) lParam; printf("%u\n",kbhook->vkCode); Checked in Java

How to convert a Windows native virtual key code to Qt::Key?

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I am working on a program which communicates with a windows native program, so it needs the actucal native virtual key code. How to convert from a Windows native virtual key code to Qt::Key? Michael Simpson If you have access to a QKeyEvent , key() and nativeVirtualKey may help. From Assistant, qthelp://com.trolltech.qt.472/qdoc/qkeyevent.html#details sat4ripe Look in the file qt\src\gui\kernel\qkeymapper_win.cpp 来源： https://stackoverflow.com/questions/7482213/how-to-convert-a-windows-native-virtual-key-code-to-qtkey

Form submit on keyCode == “enter” (13)

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I need to submit the content of a form when I press the Enter key, but only if the form has no error message. I built up the following function: $(targetFormID).submit(function (e) { var mess = error_m(targetDiv); if (e.keyCode == 13 && mess.length > 0) { e.preventDefault(); e.stopPropagation(); } if (mess.length == 0 && e.keyCode == 13) $(targetFormID).submit(); }); In this function the mess variable is getting the error message returned by function error_m , the rest is simple code condtion but it doesn't work. Need some help with this!! Submitting the form when the Enter key is pressed is

Send NSEvent to background app

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I need to send the key combo ^⌘C to a background app with the bundle identifier com.company.app . The key combo should then activate a menu item in that application. Unfortunately, I have no clue how to do that. Some research pointed me to the NSEvent and CGEvent API using CGEventPostToPSN() , but I was unable to get it work correctly, as I don't know how to set up the key combo. CGEventPost() didn't seem to work with the events I created, even if the desired app is the active one. Here is the code I eventually came up with but that doesn't work: CGWindowID windowNumber; NSEvent *event =

jQuery Trigger keyCode Ctrl+Shift+z & Ctrl+z in wysiwyg textarea

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i was wondering how do i trigger the event keyCode composed by Ctrl+z and the event keycode composed by Ctrl+Shift+z ? If you want to trigger the event then it should be something like this: HTML <!DOCTYPE html> <html> <head> </head> <body> <input type=button value=CTRL+SHIFT+Z id=bcsz /> <input type=button value=CTRL+Z id=bcz /> <textarea id=t ></textarea> </body> </html> JavaScript var t = document.getElementById('t'), //textarea bcsz = document.getElementById('bcsz'), //button ctrl shift z bsz = document.getElementById('bcz'), // button ctrl z csz = document.createEvent('KeyboardEvents'), /

JavaScript keycode allow number and plus symbol only

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I have this JavaScript function that is used to force user only type number in the textbox. Right now and I want to modify this function so it will allow the user to enter plus (+) symbol. How to achieve this? //To only enable digit in the user input function isNumberKey(evt) { var charCode = (evt.which) ? evt.which : event.keyCode if (charCode > 31 && (charCode < 48 || charCode > 57)) return false; return true; } Since the '+' symbol's decimal ASCII code is 43, you can add it to your condition. for example : function isNumberKey(evt) { var charCode = (evt.which) ? evt.which : event.keyCode if

form表单自动提交问题

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1.form表单会自动提交的几种情况 1）表单里有一个type="submit"的按钮，回车键生效 2）表单里只有一个type="text"的input，回车键生效。 2.form表单自动提交的请求如果form表单没有设置action属性，自动提交的请求是当前页面地址，即页面会自动刷新详细分析参考：http://www.360doc.com/content/15/0121/23/14009801_442697693.shtml 另附上javascript中event.keycode。 keycode 8 = BackSpace BackSpace keycode 9 = Tab Tab keycode 12 = Clear keycode 13 = Enter keycode 16 = Shift_L keycode 17 = Control_L keycode 18 = Alt_L keycode 19 = Pause keycode 20 = Caps_Lock keycode 27 = Escape Escape keycode 32 = space space keycode 33 = Prior keycode 34 = Next keycode 35 = End keycode 36 = Home keycode 37 = Left keycode 38 = Up

vue中Enter触发登录事件和javascript中Enter触发点击事件

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created(){ window.addEventListener('keydown', this.handleKeyDown, true)//开启监听键盘按下事件 } 在methods中当keyCode的值为13触发登录绑定的事件即可 // 登录登录登录 async changeUser () { // 消息提示只弹出一个框 this.$message.closeAll() let s = checkPhone(this.dlPhone, 1) // 手机号 if (s.code === 500) { this.$message(s.msg) return } let ss = checkPhone(this.dlPassword, 2) // 密码 if (ss.code === 500) { this.$message(ss.msg) return } // if (s.code == 200 && ss.code == 200) { let res = await this.$http.post('/api/login', { mobile: this.dlPhone, password: this.dlPassword }) if (res.data.code === 200) { this.show = 2 this.$store.commit('CHANGE

pc端自动化

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一、为什么要使用自动化？ 1.提高工作效率，节约时间，解脱双手。二、自动化的使用场景是什么？ 1.重复且大量的工作 2.此工作的工作方式是有一定的规律可循的三、自动化的使用步骤 1.创建java项目 2.编写Robots类 1 import java.awt.AWTException; 2 import java.awt.Toolkit; 3 import java.awt.Robot; 4 import java.awt.event.InputEvent; 5 import java.awt.event.KeyEvent; 6 7 public class Robots { 8 /** 9 * 移动鼠标的方法 10 */ 11 public static final void move(int x,int y,int time) { 12 try { 13 /**创建工具包对象*/ 14 Toolkit toolkit = Toolkit.getDefaultToolkit(); 15 /**创建自动化对象*/ 16 Robot robot = new Robot(); 17 robot.mouseMove(x, y); //将鼠标移动到指定位置 18 robot.delay(time); //鼠标点击后的睡眠时间 19 }catch (Exception e) { 20

Xkb: How to increase the number of KeySyms in the client map of an XkbDescRec keyboard description?

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I'm trying to programmatically modify some of the properties of my xkb keyboard mapping in X11. In the XkbClientMapRec struct map member of the XkbDescRec struct, we have the following members: typedef struct { /* Client Map */ unsigned char size_types; /* # occupied entries in types */ unsigned char num_types; /* # entries in types */ XkbKeyTypePtr types; /* vector of key types used by this keymap */ unsigned short size_syms; /* length of the syms array */ unsigned short num_syms; /* # entries in syms */ KeySym * syms; /* linear 2d tables of keysyms, 1 per key */ XkbSymMapPtr key_sym_map; /*

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