event-handling

问题 I need to record several thousand short soundbites of my own speech (I'm training an acoustic model for a speech recognition engine) So for each one, a line of text presents itself on the screen and I have to speak it, and capture the audio into a .WAV I found a sample project for recording the audio; now I am trying to figure out how to do keyboard input. I would like to push the SPACEBAR down to start recording and release it to terminate the recording. Can anyone get me started? ( an

问题 The following code is from the MVVM sample by Josh Smith: /// <summary> /// Raised when this workspace should be removed from the UI. /// </summary> public event EventHandler RequestClose; void OnRequestClose() { //if (RequestClose != null) // RequestClose(this, EventArgs.Empty); EventHandler handler = this.RequestClose; if (handler != null) handler(this, EventArgs.Empty); } The commented lines are my addition. My question is the commented lines would do the same thing as the uncommented

问题 I've got a TDbGrid in my project, and I'm trying to have an event go off every time I change the selected row. Any change in row already updates all the data-aware controls linked to the same DataSource, but there are other changes to be made too, that I need an event handler for. I thought OnColEnter would work. According to the helpfile, it fires when: The user navigates to the cell using the keyboard. For example, when the user uses the Tab key, or the Home key. The user clicks the mouse

问题 I have a custom NSView subclass with (for example) the following methods: override func mouseDown(with event: NSEvent) { Swift.print("mouseDown") } override func mouseDragged(with event: NSEvent) { Swift.print("mouseDragged") } override func mouseUp(with event: NSEvent) { Swift.print("mouseUp") } As long as the mouse (button) is pressed, dragged and released all inside the view, this works fine. However, when the mouse is depressed inside the view, moved outside the view, and only then

问题 I have a custom NSView subclass with (for example) the following methods: override func mouseDown(with event: NSEvent) { Swift.print("mouseDown") } override func mouseDragged(with event: NSEvent) { Swift.print("mouseDragged") } override func mouseUp(with event: NSEvent) { Swift.print("mouseUp") } As long as the mouse (button) is pressed, dragged and released all inside the view, this works fine. However, when the mouse is depressed inside the view, moved outside the view, and only then

问题 What is the best way to attach an event handler to element in jQuery by performance? All elements that I want to attach an event handler to them, are static and we don't have any generated and dynamically created elements: <div class="foo"></div> <div class="bar"></div> <div class="qux"></div> I want to attach click event handler to all them separately, I have three options. I. Attaching event handler directly In this classic method, I will attach the event handler directly to the elements: $

问题 What is the best way to attach an event handler to element in jQuery by performance? All elements that I want to attach an event handler to them, are static and we don't have any generated and dynamically created elements: <div class="foo"></div> <div class="bar"></div> <div class="qux"></div> I want to attach click event handler to all them separately, I have three options. I. Attaching event handler directly In this classic method, I will attach the event handler directly to the elements: $

问题 I'm attempting to build a webpage that loads depending on the input provided. I'm having some trouble wrapping my head around event handling in javascript, basically. Coming from python, if I wanted to wait for a specific keyboard input before moving on to the next object to display, I would create a while loop and put a key listener inside it. Python: def getInput(): while 1: for event in pygame.event.get(): #returns a list of events from the keyboard/mouse if event.type == KEYDOWN: if event

问题 I'm attempting to build a webpage that loads depending on the input provided. I'm having some trouble wrapping my head around event handling in javascript, basically. Coming from python, if I wanted to wait for a specific keyboard input before moving on to the next object to display, I would create a while loop and put a key listener inside it. Python: def getInput(): while 1: for event in pygame.event.get(): #returns a list of events from the keyboard/mouse if event.type == KEYDOWN: if event

问题 I have two threads of execution(say Thread1 and Thread2). Thread2 is listening for a particular event and as the event occurs it wants to stop execution of Thread1 and trigger an action. After it is done with the action it needs to continue the execution of Thread1 from where it stopped. What kind of approach should I take to do this in Java? 回答1: The clean way to do it, IMHO, is to make Thread1 regularly poll some state variable to see if it has been asked to pause. If it's been asked to