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  • Context Menu event with QGraphicsWidget

    - by onurozcelik
    In my application I subclass QGraphicsWidget In paint I am drawing a line with pen width 4. I reimplemented boundingRect() and shape(). But I can't catch context menu event every time I click right mouse button. What is the problem.(Pen Width ? ) //Sample code for boundingRect() and shape() QRectF boundingRect() const { qreal rectLeft = x1 < x2 ? x1 : x2; qreal rectTop = y1 < y2 ? y1 : y2; qreal rectWidth = (x1 - x2) != 0 ? abs(x1-x2) : 4; qreal rectHeight = (y1 - y2) != 0 ? abs(y1 -y2) : 4; return QRectF(rectLeft,rectTop,rectWidth,rectHeigt); } QPainterPath shape() { QPainterPath path; path.addRect(boundingRect()); return path; }

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  • Paste Event in a WPF TextBox

    - by code-zoop
    I have created a custom control inheriting TextBox. This custom control is a numeric TextBox, only supporting numbers. I am using OnPreviewTextInput to check each new character being typed to see if the character is a valid input. This works great. However, if I paste the text into the TextBox, OnPreviewTextInput is not fired. What is the best way to capture pasted text in a TextBox? Also, I have a problem when the back space is pressed, I can't figure out what event this will fire. OnPreviewTextInput is not fired! any ideas how to capture pasted text and back space events in WPF TextBox? Thanks

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  • Notifying iFrame page from Firefox extension?

    - by Crashalot
    I'm writing a Firefox extension and need to notify an iFrame page of certain events. The iFrame page is contained within a sidebar created by the extension, and this iFrame page is controlled by me. When I load the iFrame page, the extension code needs to send a notification and trigger something to happen within the iFrame page. To accomplish this, I'm creating an event from the extension Javascript and firing the event, which the iFrame page is listening to. Unfortunately, when invoking document.createEvent(), this error pops up (copied, with the quotes, straight out of Firebug): Operation is not supported" code: "9 Any clues on the error, or suggestions on how to trigger something in an iFrame page from the extension Javascript? Thanks!

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  • Event Capturing vs Event Bubbling

    - by Rajat
    I just wanted to get the general consensus on which is a better mode of event delegation in JS between bubbling and capturing. Now I understand that depending on a particular use-case, one might want to use capturing phase over bubbling or vice versa but I want to understand what delegation mode is preferred for most general cases and why (to me it seems bubbling mode). Or to put it in other words, is there a reason behind W3C addEventListener implementation to favor the bubbling mode. [capturing is initiated only when you specify the 3rd parameter and its true. However, you can forget that 3rd param and bubbling mode is kicked in] I looked up the JQuery's bind function to get an answer to my question and it seems it doesn't even support events in capture phase (it seems to me because of IE not support capturing mode). So looks like bubbling mode is the default choice but why?

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  • Android Custom View to Activity communication

    - by Blumer
    I have a custom control/view that observes the direction of a gesture within its bounds. I would like to send a different message back to the Activity hosting the View depending on the direction of the gesture. I'm having a hard time determine what the right way to do this is. I would think I could raise a custom event in the control and then stick a listener on the control in the activity, but I cannot find any information on custom events in Android. Any help would be appreciated. Thanks.

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  • AS3 Event Bubbling outside of the Scenegraph/DisplayList

    - by Brian Heylin
    Hi just wondering if it is possible to take advantage of event bubbling in non display list classes in AS3. For example in the model of an application where there is a City class that contains many Cars. What methods are there to attach an event listener to a City object and receive events that bubble up from the child Cars. To clarify The City and Car objects are not part of the display list, they are not DisplayObjects. So can bubbling be implemented outside of the display list somehow? As far as I know, this is not possible without manually attaching event listeners to each Car object and re dispatching the event from the City object. Anyone else have a cleaner solution?

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  • Call a function by its name, given from string java

    - by Joao
    Hello, I would like to be able to call a function based on its name provided by a string. Something like public void callByName(String funcName){ this.(funcName)(); } I have searched a bit into lambda funcions but they are not supported. I was thinking about going for Reflection, but I am a bit new to programming, so I am not so familiar with the subject. This whole question was brought up on my java OOP class, when I started GUI (Swing, swt) programming, and events. I found that using object.addActionCommand() is very ugly, because I would later need to make a Switch and catch the exact command I wanted. I would rather do something like object.attachFunction(btn1_click), so that it would call the btn1_click function when the event click was raised. Thank you Joao

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  • How can I update an expression in a Runt::Schedule object?

    - by Reid Beels
    Runt provides a Schedule class for managing collections of events, each represented by a temporal expression. The Schedule class provides an update method, cited in the release notes as "allowing clients to update existing expressions". The implementation of this method, however, simply calls a supplied block, providing the temporal expression for the specified event (as shown). # From lib/runt/schedule.rb:61 # # Call the supplied block/Proc with the currently configured # TemporalExpression associated with the supplied Event. # def update(event,&block) block.call(@elems[event]) end How is one expected to use this method to update an expression?

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  • WYSIWYG iframe editor and oninput event.

    - by teehoo
    I'm writing a simple WYSIWYG editor in an iframe, but having trouble registering the "oninput" event to detect when the user modifies the text field such as pasting in data etc. var txtArea = document.getElementById('txtArea'); txtArea.contentWindow.document.designMode="on"; txtArea.contentWindow.document.open(); txtArea.contentWindow.document.write("<head><style type='text/css'>body{font-size:13px;}</style></head><body>"+data.document+"</body>"); txtArea.contentWindow.document.close(); $([txtArea.contentWindow.document]).bind("click", updateCaretPosMouse); //fires $([txtArea.contentWindow.document]).bind("keyup", updateCaretPosKeyboard); //fires $([txtArea.contentWindow.document]).bind("input", textChanged); //doesn't fire If I create a plain old element, and add the "input" event to this, then it works. Do 'input" events not work with iframes WYSIWYG editors?

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  • jQuery event handler queue

    - by resopollution
    Overview of the problem In jQuery, the order in which you bind a handler is the order in which they will be executed if you are binding to the same element. For example: $('#div1').bind('click',function(){ // code runs first }); $('#div1').bind('click',function(){ // code runs second }); But what if I want the 2nd bound code to run first? . My current solution Currently, my solution is to modify the event queue: $.data(domElement, 'events')['click'].unshift({ type : 'click', guid : null, namespace : "", data : undefined, handler: function() { // code } }); . Question Is there anything potentially wrong with my solution? Can I safely use null as a value for the guid? Thanks in advance. .

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  • Keyboard input for a game in Java

    - by hmp
    I'm writing a game in Java, right now it's Swing + JOGL - a JFrame with a GLCanvas. I handle input using keyPressed etc. events (jframe.addKeyListener(...)) and it doesn't seem to work properly: when I have 3+ keys down at the same time, they don't register properly after the window loses, then regains focus, input stops working completely... What am I doing wrong? Is there a better way of handling keyboard input in Java? (I'd rather not switch to another library, like LWJGL... unless I have no choice).

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  • Actionscript 3 Navigate with Keyboard Between Labels

    - by Sbml
    Hello I need to navigate between labels with arrow keys like a power point presentation. I have an array with labels and a KeyboardEvent. My problem is, if I am in label number four for example and click in arrow click, always goes to first label. So I need help defining my current label to go to the next on key press. My code: import flash.events.KeyboardEvent; var myLabels:Array = [ "label_1", "label_2", "label_3", "label_4"]; var nextLabel:String; var inc:int = 0; stage.addEventListener(KeyboardEvent.KEY_DOWN, keyPressed); function keyPressed(evt:KeyboardEvent):void { switch(evt.keyCode) { case Keyboard.RIGHT : nextLabel = String(myLabels[inc]); gotoAndStop(nextLabel); inc++; break; } } Thanks

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  • Making element draggable with Android WebView (ideally, just with Javascript) ?

    - by GJTorikian
    I'm building an app with a build target of 1.5 . I have a variable, WebView browser, that is calling loadUrl to load a static HTML page from my assets folder. In that HTML page, the following JavaScript is defined: var supportsTouch = ('createTouch' in document); ... var w = $('wrapper'); w[supportsTouch ? 'touchmove' : 'onmousemove'] = move; w[supportsTouch ? 'touchend' : 'onmouseup'] = function(event){ dragging = false; }; where move is another function that handles the dragging. Unfortunately, this doesn't seem to work. I cannot figure out a concise list of which touch events are available to Android--is it ontouchmove, or touchmove? Am I supposed to set up an onTouchEvent call back in my Java code, which then launches the JavaScript function?

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  • Class as an Event Observer

    - by emi
    I want to do something like this... var Color = Class.create({ initialize: function() { this._color = "white"; this.observe("evt: colorChanged", this.colorChanged.bind(this)); }, changeColor: function(color) { this._color = color; this.fire("evt: colorChanged"); }, colorChanged: function(event) { alert("You change my color!"); } }); var a = new Color().changeColor("blue"); Why the colorChange custom event will never be dispatched and I need to use, instead of this, a DOM element like document.observe? In my code I'd like to know which class dispatches the event using event.target and I can't if I must use document or some other DOM element. :( I've been working in Actionscript 3 and that's the methodology I learned to work with custom events in classes. What about Javascript?

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  • How to determine which class has called a function

    - by dannyc
    Hi, I am working on a Flex Front End at the moment, and have been using the Parsley framework for passing messages/events around. I was wondering if there is a simple way for a function (in this case, an event's constructor) to obtain a reference to the object which called it? This is to ensure that a certain event that I am defining can only be dispatched by one specified class. My thinking is to check the caller of the constructor somehow, and throw an error if it is not of the correct type. I am open to suggestions of alternative approaches here, but I would ideally like to stick to using the Parsley 'MessageHandler' approach if at all possible. Thanks for reading guys..

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  • Javascript dispatchEvent

    - by xpepermint
    Hey... I'm using Flash a lot and my classes uses EventDispatcher class which allowes me to define custom events of a class. How can I do this in javascript. I would like to do something like this: var MyClass = function() { }; MyClass.prototype = { test : function() { dispatchEvent('ON_TEST'); } }; var mc = new MyClass(); mc.addEventListener('ON_TEST', handler); function handler() { alert('working...') } How is this posible with Javascript?

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  • JavaScript onload/onreadystatechange not firing when dynamically adding a script tag to the page.

    - by spoon16
    I am developing a bookmarklet that requires a specific version of jQuery be loaded on the page. When I have to dynamically insert a jQuery script tag to meet the requirments of the bookmarklet I want to wait for the onload or onreadystatechange event on the script tag before executing any function that requires jQuery. For some reason the onload and/or onreadystatechange events do not fire. Any ideas on what I am doing wrong here? var tag = document.createElement("script"); tag.type = "text/javascript"; tag.src = "http://ajax.microsoft.com/ajax/jquery/jquery-" + version + ".min.js"; tag.onload = tag.onreadystatechange = function () { __log("info", "test"); __log("info", this.readyState); }; document.getElementsByTagName('head')[0].appendChild(tag); The FULL code: http://gist.github.com/405215

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  • Custom event listener on Android app

    - by Bilthon
    Hi everybody, I need to set up a simple event listener to refresh a listview from once in a while. The problem is I don't know how could I generate an event. I know that for events like key or button pressing I just need to implement the handler. But in this specific case I actually need to generate the event, which will be fired everytime another running thread of my app wakes up and refreshes it's list of news from a rss feed. I've done everything, but got stucked in here. Can I get any suggestion or link with some more info on how to implement this? Thanks Nelson R. Perez

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  • Qt grabWindow coordinates shifted from GetCursorPos and GetWindowRect

    - by user1391
    In Qt, when I use the QPixmap::grabWindow(hwnd,x,y,h,w) function, the coordinates are shifted slightly, when compared to the coordinates using the windows api functions GetCursorPos and GetWindowRect. i.e. (0,0) from the point of view of GetCursorPos and GetWindowRect is at the very top left of the toolbar at the top of the window. But (0,0) for QPixmap::grabWindow is more "inside" (i.e. ignoring the window frame). How can I make these 2 coordinates consistent? Especially since the user might have different thicknesses for the window frame?

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  • Where can I get the CUR files for the Firefox cursor values?

    - by harpo
    I'm using some of Firefox's specially-defined values for cursor, in particular -moz-zoom-in -moz-zoom-out -moz-grab -moz-grabbing In order to display these on other browsers, I'd like to deploy the equivalent CUR files — but I can't seem to find these online, or in my copy of Firefox. Anyone know where these are available?

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  • jQuery live() and stopPropagation() issue

    - by colourandcode
    I know that the live() event handles event bubbling different than all other jQuery events. jQuery recommends using 'return false', but in my case that doesn't work. The issue is: I have a DIV which contains an anchor tag. The DIV is bound using live(). Whenever I click the anchor tag inside this DIV it bubbles and calls the DIV's event. If I bind an event to that A tag which returns false it prevents the link from opening. Neither stopPropagation() or return false work in this case. Are there any other options? Ideally I'd like to keep the live() event around.

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  • onTextChanged Event for many Textboxes c#

    - by Alan Bennett
    Hi, I am currently building a prototype for a new system screen, and i am using c# to build this. The question i have is, i currently have 14 textboxes which are filled from a condition from a couple of other controls on the screen. these 14 textboxes all add up to a total shown in another textbox. as these textboxes are editable (in case the client wishes to increase the value) (cant go into to much detail but they will) I need to have a firable ontextchange event for when the values change so the total box updates. however i have a feeling there must be a way of not having to create 14 different events, is there a way that i can have 1 event which fires if any of the 14 text boxes are fired? thanks Alan

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  • Blackberry RepeatRule

    - by Vinay
    Hi All, I am very new to Blackberry development. I am trying to access the Blackberry Events (Calender) list. Currently, I am able to read the basic information from the event list. I am stuck in getting the info regarding the RepeatRule. My code is as below: EventList eventList = (EventList)PIM.getInstance().openPIMList(PIM.EVENT_LIST, PIM.READ_ONLY); Enumeration e = eventList.items(); while (e.hasMoreElements()) { Event event = (Event)e.nextElement(); RepeatRule rRule = event.getRepeat() ; if (rRule != null) { fieldIds = rRule.getFields() ; // Here I get the values as { 0,128,64,2}. How do I decode this information? } } Can any one help in decoding this information. Any kind of links, examples or pointers would be of great help. Thanks and regards, Vinay

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