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  • How to get the current eventNumber for creating an event with NSEvent

    - by Chris
    Hello I'm creating an os x application for which I try to add a remote interface. For this I need to be able to send mouse down and mouse up commands to the window of my application. I found code with which I can successfully do this, it looks as follows: int mask = 0x100; NSEvent* eventMouseDown = [NSEvent mouseEventWithType:NSLeftMouseDown location:p modifierFlags:mask timestamp:[NSDate timeIntervalSinceSystemStartup] windowNumber:[w windowNumber] context:[NSGraphicsContext graphicsContextWithWindow:w] eventNumber:++eventCounter +42599 clickCount:1 pressure:0]; NSLog(@"Mouse down event: %@", eventMouseDown); [[NSApplication sharedApplication] sendEvent:eventMouseDown]; I have only one problem with this code thought and this is the eventNumer parameter. As far as I found out it is a number which get increased with each event. But I cannot find a way to find the current number from where on I need to increase. The number I use there currently is just try and error and also does not seam to work always.

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  • How to use Event notification in Solaris 10 when a directory change

    - by user357594
    I read the following page: Robert Benson's article on ECF developers.sun.com/solaris/articles/event_completion.html I also read the Solaris man pages but they are not very clear of how to use event notifications for directories. For example, If I add a new file into a directory, I would like to get some notification of that event. I found this link: blogs.sun.com/praks/entry/file_events_notification Which has what I need but it is for Solaris 11 ( which is not in the market yet). Based on the link below, I don't want to use poll because I want to get the performance advantage of events. blogs.sun.com/dap/entry/event_ports_and_performance Any suggestion is highly appreciated! -Armando.

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  • Visual Studio 2008. MFC event wizard broken

    - by G Forty
    OK, so it's almost a programming question - The VS2008 dialog event wizard has stopped working. Double-clicking on a button in an MFC dialog project does not fire the wizard as usual and a right-click to get to the 'Add Event Handler...' shows a dialog with no message types. Further to this the MFC message mapping and virtual class listing that generally appears in the properties window (Alt + Enter) is now empty. Has anyone elese seen this and if so, how'd they fix it? I have 'repaired' my VS08 installation ... Thx++ Jerry

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  • view handler design pattern

    - by Mark Roberts
    I'm trying to figure out the origin of the view handler design pattern in software engineering. Many of the design patterns in software engineering were inspired by things which pre-date computers, and I was wondering if anybody had any insights on the origin of this particular pattern.

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  • How to change a field value during the ItemUpdating event

    - by Buzzby
    Hi I am trying to set the value of a field on a ListItem in an event receiver but its not working All i am doing during the event is properties.AfterProperties[<field internal name>] = 1; No errors are thrown but the the field i'm setting does not change. I have also tried properties.ListItem[<field internal name>] = 1; properties.ListItem.Update(); Have also tried SystemUpdate(); I know i am meant to be setting the afterproperties but think i am missing an obvious step. Thanks

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  • C# event or delegate or other solution?

    - by user295734
    Looking for some help or programmng ideas or mayeb there is some pattern that would help. Have an application that needs to fire alot of events sequentially, it could up to 100 or more unique events, it will be dynamic depeneding on the situation. Trying to find the best practice for doing this. My main idea right now is to create a list of objects iterate thru them, and fire each event. This seems wrong, or bad practice. Or maybe have one object and pass a list or params into one event? Or am I missing some feature in .NET that i could be using or implementing?

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  • Event feed implementation - will it scale?

    - by SlappyTheFish
    Situation: I am currently designing a feed system for a social website whereby each user has a feed of their friends' activities. I have two possible methods how to generate the feeds and I would like to ask which is best in terms of ability to scale. Events from all users are collected in one central database table, event_log. Users are paired as friends in the table friends. The RDBMS we are using is MySQL. Standard method: When a user requests their feed page, the system generates the feed by inner joining event_log with friends. The result is then cached and set to timeout after 5 minutes. Scaling is achieved by varying this timeout. Hypothesised method: A task runs in the background and for each new, unprocessed item in event_log, it creates entries in the database table user_feed pairing that event with all of the users who are friends with the user who initiated the event. One table row pairs one event with one user. The problems with the standard method are well known – what if a lot of people's caches expire at the same time? The solution also does not scale well – the brief is for feeds to update as close to real-time as possible The hypothesised solution in my eyes seems much better; all processing is done offline so no user waits for a page to generate and there are no joins so database tables can be sharded across physical machines. However, if a user has 100,000 friends and creates 20 events in one session, then that results in inserting 2,000,000 rows into the database. Question: The question boils down to two points: Is this worst-case scenario mentioned above problematic, i.e. does table size have an impact on MySQL performance and are there any issues with this mass inserting of data for each event? Is there anything else I have missed?

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  • Design Patterns : Question about "Types"

    - by contactmatt
    Would someone please explain to me what the below paragraph means? This is a snippet from "Design Patterns: Elements of Reusable OO software" Part of an object's interface may be characterized by one type, and other parts by other types. Two objects of the same type need only share parts of their interfaces. Interfaces can contain other interfaces as subsets. - Design Patterns - Elements of Reusable OO software, pg 13

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  • Javascript Prototype Best Practice Event Handlers

    - by nahum
    Hi this question is more a consulting of best practice, Sometimes when I'm building a complete ajax application I usually add elements dynamically for example. When you'r adding a list of items, I do something like: var template = new Template("<li id='list#{id}'>#{value}</li>"); var arrayTemplate = []; arrayOfItem.each(function(item, index){ arrayTemplate.push(template.evaluate( id : index, value : item)) }); after this two options add the list via "update" or "insert" ----- $("elementToUpdate").update("<ul>" + arrayTemplate.join("") + "</ul">); the question is how can I add the event handler without repeat the process of read the array, this is because if you try add a Event before the update or insert you will get an Error because the element isn't still on the DOM. so what I'm doing by now is after insert or update: arrayOfItem.each(function(item, index){ $("list" + index).observe("click", function(){ alert("I see the world"); }) }); so the question is exist a better way to doing this??????

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  • C# property in a form class only accessable after formload event

    - by Spooky2010
    using vs2008, c# Howdy, Im instantiating and calling Form B from Form A. FormB has some custom properties, to allow me to pass it things like sqlAdaptors and dataset instances. When i instantiate and show Form B from Form A as a dialog form with a Using statement, it all works fine, but i find the properties i pass are not available in Form B until after the form_load event has fired. I was under the impression the properties when passed to a instantiated class should be available from a constructor, but this is not the case. If it try to access the properties before the form load event i get a null reference exception. Is this correct behavior ? It is very annoying. thanks for any help

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  • Child service not writing to event log

    - by Tommy Fisk
    I am having a very simple (but incredibly frustrating) issue with a parent service and the child service. Let's call the parent service "Service A" and the child "Service B". Both services reside on the same box. Using WCF Storm, when I send Service B a message, I see lots of entries in the event viewer for it. However, if I send a message to Service A, which calls Service B, I only see entries from Service A. So for some reason, the child logs are not written when the parent calls it, but if I call it myself, the logs do indeed show up, so I know it's not a problem with the logging or anything like that. Here is what I am using to write to the event log. // in some random static class private static EventLog el = new EventLog(); el.WriteEntry("In " + location + ", " + message); // params passed in Does anyone know why this is happening? And more importantly what I can do about it?

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  • Google maps event problem with flex actionscript

    - by DEH
    I am able to render a google map on a flex canvas. I create the map using the code below and then place markers on it in the onMapReady method (not shown) var map:com.google.maps.Map=new com.google.maps.Map(); map.id="map"; map.key="bla bla"; _mapCanvas.addChild(map); map.addEventListener(MapEvent.MAP_READY,onMapReady); It all works fine. However, if I remove the map and then set _mapCanvas to null, then run exactly the same code again, the onMapReady event does not fire. It is weird, but once a map has been created and deleted, the onMapReady event never seems to fire again. Anyone got any ideas? Thanks.

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  • Free GUI-like web design tool for Java?

    - by Peter C.
    Our company needs to build web solution and we're somewhat short on time. We use Java and do not have a design yet. We're looking for some tools/plugins for: GUI-like web design (drag and drop components) WYSIWYG The tools must be *free We like GWT but any other UI framework is fine. Plugins for NetBeans or Eclipse would be great. Any ideas?

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  • Basic QT Event handling / Threading questions ?

    - by umanga
    Greetings , I am new to QT (4.6) and have some basic questions regarding its event mechanism.I come from Swing background so I am trying to compare it with QT. 1) Does Event-processing-loop run in seperate thread? (like EventDispatch thread in Swing) ? 2) If we open several 'QMainWindow' do they run in several threads? 3) Whats the best way to run an intensive process in a seperate thread? (like SwingWorker in Swing ? ) 4) If intesive-process runs in a seperate thread ,is it possible to call UI methods like update(),repaint() from that process? thanks in advance.

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  • WPF UserControl event called only once?

    - by 742
    Hi Everyone, I need to bind two-way a property of a user control to a property of a containing user control. I also need to set a default value to the property from code in the child (cannot be done easily from XAML tags). If I call my code from the child constructor, the value is set in the parent but the change callback routine is not triggered (my understanding is that the parent doesn't yet exist at the time the child is created). My current workaround is to catch the Loaded event of the child and to call the code from the handler. Howver as Loaded is called more than once, I need to set a flag to set the property only the first time. I don't like this way, but I don't know if there is a single shot event that could be used, or if this can be done otherwise. Any feedback based on your experience?

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  • Maker/ Checker Design Module

    - by user288198
    i want to design maker/ checker module in my project like if user A add new user so the another User B will approve or reject this adding. i want to know the best practices of design for this module in the database ....... any help

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  • Database design 1 to 1 relationship

    - by Khou
    I design my database incorrectly, should I fix this while its in development? "user" table is suppose to have a 1.1 relationship with "userprofile" table however the actual design the "user" table has a 1.* relationship with "userprofile" table. Everything works! but should it be fixed anyways?

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