events

问题 Research tells me that raising an event from the constructor itself is not feasible as the object may not be fully initialised... so where can I fire an event from as soon as the constructor has fired? 回答1: One thing you can do is add a method to handle additional post ctor tasks: Friend Class FooBar Public Sub New ' your code here End Sub Public Sub Create ' do anything you want End Sub End Class Elsewhere: Friend WithEvents Foo As Foobar ' ... Foo = New FooBar ' Foo doesnt exist until ctor

问题 Research tells me that raising an event from the constructor itself is not feasible as the object may not be fully initialised... so where can I fire an event from as soon as the constructor has fired? 回答1: One thing you can do is add a method to handle additional post ctor tasks: Friend Class FooBar Public Sub New ' your code here End Sub Public Sub Create ' do anything you want End Sub End Class Elsewhere: Friend WithEvents Foo As Foobar ' ... Foo = New FooBar ' Foo doesnt exist until ctor

问题 Research tells me that raising an event from the constructor itself is not feasible as the object may not be fully initialised... so where can I fire an event from as soon as the constructor has fired? 回答1: One thing you can do is add a method to handle additional post ctor tasks: Friend Class FooBar Public Sub New ' your code here End Sub Public Sub Create ' do anything you want End Sub End Class Elsewhere: Friend WithEvents Foo As Foobar ' ... Foo = New FooBar ' Foo doesnt exist until ctor

问题 I am trying to create a custom UIView/Scrollview named MyScrollView that contains a few labels (UILabel), and these labels receive tap gestures/events in order to respond to user's selections . In order to make the tap event work on the UILabels, I make sure they all have userIteractionEnabled = true and I created a delegate as below: protocol MyScrollViewDelegate { func labelClicked(recognizer: UITapGestureRecognizer) } The custom UIView is being used in ScrollViewController that I created,

问题 I have implemented this example: http://matplotlib.sourceforge.net/examples/pylab_examples/finance_demo.html?highlight=candlestick I would like to implement mouse hover features for the candlestick so that I can see the candlestick's open/high/low/close either in a popup or a label in a certain panel. I was following along with: http://matplotlib.sourceforge.net/examples/event_handling/pick_event_demo.html Unfortunately, the function: candlestick(ax, quotes, width=0.6) does not have a picker

问题 I have implemented this example: http://matplotlib.sourceforge.net/examples/pylab_examples/finance_demo.html?highlight=candlestick I would like to implement mouse hover features for the candlestick so that I can see the candlestick's open/high/low/close either in a popup or a label in a certain panel. I was following along with: http://matplotlib.sourceforge.net/examples/event_handling/pick_event_demo.html Unfortunately, the function: candlestick(ax, quotes, width=0.6) does not have a picker

问题 I'm working on a win32/MFC project. I have a custom CListCtrl control that I must to add, from time to time, some strings of characters. I absolutely need to perform some manipulations on items dynamically added to my CListCtrl. Ultra-Basically, I need to: Detect adding of single elements; Retrieve _single items_ IMMEDIATELY AFTER(ideally, shortly after InsertItem() invocation); Store values of single items in a map, which I will use to perform other manipulations. I thought about doing this

问题 I'm looking at this page: http://nodejs.org/api/net.html#net_net_createconnection_options_connectionlistener Running the code from the page: var net = require('net'); var client = net.connect({port: 8124}, function() { //'connect' listener console.log('client connected'); client.write('world!\r\n'); }); client.on('data', function(data) { console.log(data.toString()); client.end(); }); client.on('end', function() { console.log('client disconnected'); }); and I'm getting the error: events.js:72

问题 I'm looking at this page: http://nodejs.org/api/net.html#net_net_createconnection_options_connectionlistener Running the code from the page: var net = require('net'); var client = net.connect({port: 8124}, function() { //'connect' listener console.log('client connected'); client.write('world!\r\n'); }); client.on('data', function(data) { console.log(data.toString()); client.end(); }); client.on('end', function() { console.log('client disconnected'); }); and I'm getting the error: events.js:72

问题 I need to run a script every time a table is resized (whenever the user resizes the browser window). Does anyone know how this can be done? 回答1: function myFunction() { alert('resized'); } window.onresize = myFunction; 回答2: window.onresize = function(){alert('test');} 回答3: If you use Jquery, $(window).resize(function() { alert("test now"); }); 来源： https://stackoverflow.com/questions/2733533/how-can-i-run-a-javascript-function-every-time-an-html-element-is-resized