key-bindings

Keybinding a RelayCommand

由 ぃ、小莉子 提交于 2019-11-26 18:25:24
问题 I'm using the RelayCommand in my app. It's great for putting the code in the viewmodel, but how do I bind keystrokes to my command? RoutedUICommand has its InputGestures property, which makes the command automatically be invoked when I press the keystroke. (As an added bonus, it even makes the keystroke display in the MenuItem.) Unfortunately, there's no reusable interface for RoutedUICommand's extra properties, so I can't make a RelayUICommand that gets the same magic. I've already tried

Why does Ctrl+. not work when I bind it to a command in Emacs?

由 喜你入骨 提交于 2019-11-26 17:45:52
C-. doesn't work in the terminal when I bind it to a command in Emacs. I tried this procedure on gnome-terminal and real terminal tty1. I start Emacs with the -nw flag, then press C-h k (the command for describe-key ), then press C-. . Emacs only receives the . , without the Ctrl . How do I get this working in Emacs? I'm binding keys with this process: (define-key c-mode-base-map (kbd "C-.") 'semantic-ia-fast-jump) or (define-key c-mode-base-map [(control .)] 'semantic-ia-fast-jump) phils In short, most terminal emulators are limited in the control characters they can produce (for the simple

Xcode duplicate line

由 最后都变了- 提交于 2019-11-26 15:36:54
There is a Duplicate command in the Edit Menu (with a default shortcut of ⌘ D ), but it is (as Halley pointed out) meant for duplication in the Interface Builder part of Xcode. So, how do you ( easily ) duplicate a line in Xcode 4? Related question (with a working answer) for Xcode 3 ... and which does not work for Xcode 4. Why not just copy & paste? Because it is tedious and entails too much hand-acrobatics: either (1) : moving to line beginning and then pressing ⇧^E , then copying with ⌘C , moving to new line, alligning cursor, and finally pasting with ⌘V ; or (2) : ^A (set cursor to line

Sublime Text: Select all instances of a variable and edit variable name

由 十年热恋 提交于 2019-11-26 14:57:21
问题 I'm new to Sublime, and I just discovered that if I select a variable (not just any string) in my code, all other instances of that variable get a stroke (white outline) around them: Is there a keyboard shortcut that will let me select all of those instances of the variable and edit them all at once? Things I've tried: Using ⌘ D , ⌘ K , and ⌘ U lets me select them one-by-one, but I have to manually exclude the non-variable string matches: And using Ctrl ⌘ G simply selects all the string

Xcode duplicate line

由 做~自己de王妃 提交于 2019-11-26 12:15:32
问题 There is a Duplicate command in the Edit Menu (with a default shortcut of ⌘ D ), but it is (as Halley pointed out) meant for duplication in the Interface Builder part of Xcode. So, how do you ( easily ) duplicate a line in Xcode 4? Related question (with a working answer) for Xcode 3 ... and which does not work for Xcode 4. Why not just copy & paste? Because it is tedious and entails too much hand-acrobatics: either (1) : moving to line beginning and then pressing ⇧^E , then copying with ⌘C ,

KeyListener vs. Key Bindings

由 泪湿孤枕 提交于 2019-11-26 11:38:59
问题 People here keep suggesting to me to use Key Binding instead of KeyListener in Java 2D games. What are the advantages and disadvantages of each one? Is Key Bindings really better for 2D games? 回答1: KeyListener is a much lower level API which requires the component that it is registered to be focused AND have keyboard focus. This can cause issues when you have other components within your game that may grab keyboard focus, for example. KeyListener is generally more difficult to maintain and

How to use TextAction

由 坚强是说给别人听的谎言 提交于 2019-11-26 11:38:55
问题 What are the purposes of using TextAction from AbstractAction? and how to use it for the following: Caret Selection in the JTextComponents KeyBindings 回答1: While composing this answer, I recalled a venerable HTMLDocumentEditor by Charles Bell that illustrates the typical usage of the subclasses found in javax.swing.text.TextAction. That editor is listed among the credits of Metaphase Editor. This related example showing actions found in StyledEditorKit follows the same approach. All such

Java KeyListener vs Keybinding

由 六月ゝ 毕业季﹏ 提交于 2019-11-26 10:01:47
问题 i am trying to write a calculator and having a problem. I already made a actionlistener for all buttons and now i want to make it possible to input data from keyboard. DO i need to do the whole thing for KeyListener or Keybinding or is there any other a way to make that after clicking a button it will be sent to the instructions in actionlistener? And whats better:Keylistener or Keybinding 回答1: Generally speaking, where you have a limited set of key inputs, key bindings are a better choice.

Java KeyListener Not Registering Arrow Keys

由 青春壹個敷衍的年華 提交于 2019-11-26 08:59:14
I'm writing a simple program in Java which includes a KeyListener with the following overriding they KeyTyped method: @Override public void keyTyped(KeyEvent e) { int key = e.getKeyCode(); System.out.println("TEST"); if (key == KeyEvent.VK_KP_LEFT || key == KeyEvent.VK_LEFT) { System.out.println("LEFT"); //Call some function } else if (key == KeyEvent.VK_KP_RIGHT || key == KeyEvent.VK_RIGHT) { System.out.println("RIGHT"); //Call some function } } When I type anything other than the arrow keys (e.g. "a"), it prints TEST as it should. However, when I type a numpad arrowkey, it only prints TEST

Emacs on Mac OS X Leopard key bindings

由 懵懂的女人 提交于 2019-11-26 07:52:24
问题 I\'m a Mac user and I\'ve decided to learn Emacs. I\'ve read that to reduce hand strain and improve accuracy the CTRL and CAPS LOCK keys should be swapped. How do I do this in Leopard? Also, in Terminal I have to use the ESC key to invoke meta. Is there any way to get the alt/option key to invoke meta instead? update: While the control key is much easier to hit now, the meta key is also used often enough that its position on my MacBook and Apple Keyboard also deserves attention. In fact, I
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