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  • Is File good for Interprocess communication

    - by Karthik
    Hi, I have an EXE and DLL running in different process. From DLL I have to send large of amount of data to EXE, which would vary from 50 chars to 2000 chars and more(The data is recordid of records saved in DB). I thought about two options to do that: 1. Using SendMessage- In which data's will be sent in batch. 2. Use an Intermediate file to transfer data. Can anyone list out the pros and cons of methods. I have developed my components using C#.NET Thanks you folks.

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  • I would like to interactively detect when an ActiveX component has been installed, and asynchronousl

    - by Brian Stinar
    Hello, I am working on a website, and I would like to refresh a portion of the page after an ActiveX component has been installed. I have a general idea of how to do this with polling, which I am working on getting going : function detectComponentThenSleep(){ try{ // Call what I want ActiveX for, if the method is available, or // ActiveXComponent.object == null --- test for existance document.getElementById("ActiveXComponent").someMethod(); } catch{ // Try again, if the method is not available setTimeout(detectComponentThenSleep, 100); } } However, what I would REALLY like to do is something like this: ActiveXObject.addListener("onInstall", myfunction); I don't actually have the source for the ActiveX component, but I have complete control of the page I am hosting it on. I would like to use JavaScript, if possible, to accomplish this. So, my question is 1.) will this actually work with the polling method? and 2.) Is there an interrupt/listener like way of doing this? I am sure I am missing something with connecting the dots here, I can already detect if the component is present, but I am having trouble doing this asynchronously. Thank you very much for your time and help, -Brian J. Stinar-

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  • In Corona SDK the background image always cover other images

    - by user1446126
    I'm currently making a tower defense game with Corona SDK. However, while I'm making the gaming scene, The background scene always cover the monster spawn, I've tried background:toBack() ,however it's doesn't work.Here is my code: module(..., package.seeall) function new() local localGroup = display.newGroup(); local level=require(data.levelSelected); local currentDes = 1; monsters_list = display.newGroup() --The background local bg = display.newImage ("image/levels/1/bg.png"); bg.x = _W/2;bg.y = _H/2; bg:toBack(); --generate the monsters function spawn_monster(kind) local monster=require("monsters."..kind); newMonster=monster.new() --read the spawn(starting point) in level, and spawn the monster there newMonster.x=level.route[1][1];newMonster.y=level.route[1][2]; monsters_list:insert(newMonster); localGroup:insert(monsters_list); return monsters_list; end function move(monster,x,y) -- Using pythagoras to calauate the moving distace, Hence calauate the time consumed according to speed transition.to(monster,{time=math.sqrt(math.abs(monster.x-x)^2+math.abs(monster.y-y)^2)/(monster.speed/30),x=x, y=y, onComplete=newDes}) end function newDes() currentDes=currentDes+1; end --moake monster move according to the route function move_monster() for i=1,monsters_list.numChildren do move(monsters_list[i],200,200); print (currentDes); end end function agent() spawn_monster("basic"); end --Excute function above. timer2 = timer.performWithDelay(1000,agent,10); timer.performWithDelay(100,move_monster,-1); timer.performWithDelay(10,update,-1); move_monster(); return localGroup; end and the monster just stuck at the spawn point and stay there. but, When i comment these 3 lines of code: --local bg = display.newImage ("image/levels/1/bg.png"); --bg.x = _W/2;bg.y = _H/2; --bg:toBack(); The problem disappear Any ideas??Thanks for helping

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  • What does Silverlight offer?

    - by Maurizio Reginelli
    I'm working with C# and WPF and I would like to study something related to web programming. I already know HTML and CSS, and since I'm working with WPF, I am wondering if going into Silverlight is a good choice to start web developing. Can it be a substitute of server-side programming languages, like PHP or ASP .NET? What do you suggest? Thank you very much

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  • Did your masters degree help you as a programmer?

    - by Tim Sally
    There is a previous question ("Is a masters degree overkill?"), which is about the types of jobs available and the value of a masters when trying to get a job. What I am curious about the impact of programming ability. I know you usually write a masters thesis on some topic, which I imagine forces you to specialize. Do your programming skills actually get rusty while getting a masters, or is there some benefit? Would it be more beneficial to work for the two years instead?

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  • When to databind data-bound controls?

    - by sanjuro
    Hi, i have little dilemma, i often use data-bound controls such as Gridview in conjunction with ObjectDataSource. But i have two possible options when can i bind data to Gridview. The first is that i set datasourceid of gridview in aspx file and databind occurs in a moment before PreRender event occurs or i can set datasource in Page_Load event and databinding occurs immediately, something like this: protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { testGridView.DataSource = testObjectDataSource.Select(); testGridView.DataBind(); } } I think that in second approach i have more control above databinding. But how it is in real programming life? Which of the above two options is commonly used? Or is there some third option how can i bind data to data-bound control? Thanks for your opinions from real-life experiences.

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  • AJAX in Rails - doing simple looping to update information when available

    - by Acidburn2k
    I am trying to get put out a simple site, which would pool the database every few seconds and update the information on the page dynamicly, when theres something new inserted. I am farily new to ruby, but I understand the whole concept of RJS, link_to_function and soforth. The question is, what is the best way how to implement some kind of simple loop, which would run after the page is loaded and update the DOM if there is something new to display. Thanks in advance for any tips!

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  • How could I apply a genetic algorithm to a simple game that follows rollercoaster tracks?

    - by Chris
    I have free-rein over what I do on a final assignment for school, with respect to modifying a simple direct-x game that currently just has the camera follow some rollercoaster rails. I've developed an interest in genetic algorithms and would like to take this opportunity to apply one and learn something about them. However, I can't think of any way I could possibly apply one in this case. What are some options available to me?

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  • Using GET instead of POST to delete data behind authenticated pages

    - by Matt Spradley
    I know you should use POST whenever data will be modified on a public website. There are several reasons including the fact that search engines will follow all the links and modify the data. My question is do you think it is OK to use GET behind authenticated pages in something like an admin interface? One example would be a list of products with a delete link on each row. Since the only way to get to the page is if you are logged in, is there any harm in just using a link with the product ID in the query string?

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  • What is the best way to create a wizard for web?

    - by Yan
    I want to create a wizard that includes a few steps, that in the final steps we need to include all the steps and save to the data base. What is the best design to do this ? Is there an implementation for jquery ? Do I need to save the steps in session till the final save ?

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  • Suggestion on UPnP presentation

    - by Microkernel
    Hi all, I am working on an embedded device (bit higher end in terms of system resources but still an embedded one) which has lot of media content in it. I am trying to make it UPnP complaint and want to be able to control this device using a UPnP complaint control point/companion device like ipad. The step towards this is to be able to present the playlist content to the user. We thought of using HTML5 as a format to use. But as I am a noob in web technologies, I am not sure whats the best way to produce and present rich dynamic web pages. The content thats presented are video/audio listing that device can play and want this listing to be generated using the user's input criteria. So, what would be the best way to generate these dynamic pages which are rich and rendered as HTML5 pages. (looked at XML & XSLT, but there seems to be some limitations in how well one can use XSLT from some rewviews I saw). Thanks Microkernel PS: This may be silly or very basic as I am a embedded systems developer and not even a noob in web technologoes...

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  • Surface Detection in 2d Game?

    - by GamiShini
    I'm working on a 2D Platform game, and I was wondering what's the best (performance-wise) way to implement Surface (Collision) Detection. So far I'm thinking of constructing a list of level objects constructed of a list of lines, and I draw tiles along the lines. ( http://img375.imageshack.us/img375/1704/lines.png ). I'm thinking every object holds the ID of the surface that he walks on, in order to easily manipulate his y position while walking up/downhill. Something like this: //Player/MovableObject class MoveLeft() { this.Position.Y = Helper.GetSurfaceById(this.SurfaceId).GetYWhenXIs(this.Position.X) } So the logic I use to detect "droping/walking on surface" is a simple point (player's lower legs)-touches-line (surface) check (with some safety approximation - let`s say 1-2 pixels over the line). Is this approach OK? I`ve been having difficulty trying to find reading material for this problem, so feel free to drop links/advice.

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  • How to automatically execute python script when Maya first loaded

    - by tep
    Hi, I am new to Maya and trying to figure out how to use Python in Maya. I wanted to create a shelf in Maya and when I click that shelf, it will execute a file containing python code. First thing, I figured out that we can't simply "source" python script. I followed tutorial from http://www.rtrowbridge.com/blog/2008/11/maya-python-import-scripts/, so now I have a function psource(). In my shelf, I can just call psource("myPythonScript") My problem is I have to somehow register psource() when Maya first loaded. Do you have any idea how to do this? Thanks!

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  • Book recommendation for developing ecommerce website in Java

    - by Mirage
    I have seen that there are many books titled: Build Ecommerce website in php Build shopping carts in php or asp.net Is there any book which explains, from scratch, how to start building a website in Java using any framework or with servlets or JSP? Desired topics: Basic forms with logins and registration Building catalogue system Building shopping cart Building newsletters system

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  • how to reload the whole page through a button placed in a division in jsp

    - by ajeet singh
    when i tried to make web project, i placed the links on the left on one division and a bigger division on the right to load the jsp pages on clicking the links making the main page same... but when there is a need arises to load the whole page by clicking the button placed on the right division, i found that the only page is loaded on the right division jsp calling its action... please help me to sort out this problem..

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  • If you are a hard core .NET programmer, would you invest in learning Java

    - by GarbageGuy
    Learning just another language is not much work. However, getting familiar with all the supporting libraries is veeeery expensive and actually you cannot go too far without that. Would you consider a worthy career investment to learn java once you already are an accepted professional of .NET or you would rather invest the same amount of energy to get deeper in the things you already know?

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  • getting error as Internal Server error

    - by Rishi2686
    Hi There, When I try to run my site it gives error as Internal Server error, when I refresh the page I get my result properly.The error page looks like this: Internal Server Error The server encountered an internal error or misconfiguration and was unable to complete your request. Please contact the server administrator, [email protected] and inform them of the time the error occurred, and anything you might have done that may have caused the error. More information about this error may be available in the server error log. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request. I also checked error_log file on my server, it gives error as: [Sat Jun 12 01:21:55 2010] [error] [client 117.195.6.76] File does not exist: /home/rohit25/public_html/test/500.shtml, referer: http://www.test.mysite.com/home.php sometimes error can be; [Sat May 29 19:35:12 2010] [error] [client 97.85.189.208] File does not exist: /home2/carlton/public_html/test/favicon.ico Are there any changes required in configuration file, I also tried to involve this error code in custom error page, it shows error page, which could not resolve this issue. Your urgent help will be greatly appreciated.

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  • unexplained spacing in horizontal panel in GWT

    - by special0ne
    hi, i am adding widgets to a horizontal panel, and i want them to be all once next to the other on the left corner. even though i have set the spacing=0 and alignment= left the widgets still have space between them. they are spread evenly in the panel. please see the code here for the widget C'tor and the function that adds a new tab (toggle button) tabsPanel is a horizontalPanel, that you can see is aligned to left/right according to the locale any advise would be appreciated thanks.... public TabsWidgetManager(int width, int height, int tabs_shift_direction){ DecoratorPanel decorContent = new DecoratorPanel(); DecoratorPanel decorTitle = new DecoratorPanel(); widgetPanel.setSize(Integer.toString(width), Integer.toString(height)); tabsPanel.setSize(Integer.toString(UIConst.USER_CONTENT_WIDTH), Integer.toString(UIConst.TW_DEFAULT_TAB_HEIGHT)); tabsPanel.setSpacing(0); if (tabs_shift_direction==1) tabsPanel.setHorizontalAlignment(HorizontalPanel.ALIGN_LEFT); else tabsPanel.setHorizontalAlignment(HorizontalPanel.ALIGN_RIGHT); decorTitle.add(tabsPanel); contentPanel.setSize(Integer.toString(UIConst.USER_CONTENT_WIDTH), Integer.toString(UIConst.USER_CONTENT_MINUS_TABS_HEIGHT)); decorContent.add(contentPanel); widgetPanel.add(decorTitle, 0, 0); widgetPanel.add(decorContent, 0, UIConst.TW_DEFAULT_TAB_HEIGHT+15); initWidget(widgetPanel); } public void addTab(String title, Widget widget){ widget.setVisible(false); ToggleButton tab = new ToggleButton(title); tabsList.add(tab); tab.setSize(Integer.toString(UIConst.TW_TAB_DEFAULT_WIDTH), Integer.toString(UIConst.TW_TAB_DEFAULT_HEIGHT)); tab.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { handleTabClick((ToggleButton)event.getSource()); } }); //adding to the map tabToWidget.put(tab, widget); // adding to the tabs bar tabsPanel.add(tab); //adding to the content contentPanel.add(widget); }

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  • Best Method for "Back Button"

    - by CitadelCSCadet
    I'm working on a web application using JSP/Servlets, etc. And I have a lot of form progression. I am aware of some ways to use the "Back" functionality, but I am not sure if its efficient enough. What are the best ways to implement this? Does it Involve using the session object? or just the request? or neither?

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  • ASP.NET MVC Actions that return different views, or just make a ton of Actions?

    - by Nate Bross
    So, I am in a situation, where I need to display a different view based on the "Role" that the authenticated user has. I'm wondering which approach is best here: [Authorize(Roles="Admin")] public ActionResult AdminList(int? divID, int? subDivID) { var data = GetListItems(divID.Value, subDivID.Value); return View(data); } [Authorize(Roles = "Consultant")] public ActionResult ConsultantList(int? divID, int? subDivID) { var data = GetListItems(divID.Value, subDivID.Value); return View(data); } or should I do something like this [Authorize] public ActionResult List(int? divID, int? subDivID) { var data = GetListItems(divID.Value, subDivID.Value); if(HttpContenxt.User.IsInRole("Admin") { return View("AdminList", data ); } if(HttpContenxt.User.IsInRole("Consultant") { return View("ConsultantList", data ); } return View("NotFound"); }

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  • Android: How to invalidate multiple parts of screen

    - by user342731
    I need to be able to selectively invalidate multiple (about 20) rectangles on the screen for performance reasons, so tried the following: Vector<Rect> myRects = new Vector<Rect>(); // ... add some Rects to myRects for (Rect r : myRects) { invalidate(r); } However this seems to invalidates a union of all the Rect's, forming one large rectangle which covers all of small ones I'm trying to invalidate. How can one invalidate multiple areas on the screen, and only those areas?

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  • Keeping sync in multiplayer RTS game that uses floating point arithmetic

    - by Calmarius
    I'm writing a 2D space RTS game in C#. Single player works. Now I want to add some multiplayer functionality. I googled for it and it seems there is only one way to have thousands of units continuously moving without a powerful net connection: send only the commands through the network while running the same simulation at every player. And now there is a problem the entire engine uses doubles everywhere. And floating point calculations are depends heavily on compiler optimalizations and cpu architecture so it is very hard to keep things syncronized. And it is not grid based at all, and have a simple phisics engine to move the space-ships (space ships have impulse and angular-momentum...). So recoding the entire stuff to use fixed point would be quite cumbersome (but probably the only solution). So I have 2 options so far: Say bye to the current code and restart from scratch using integers Make the game LAN only where there is enough bandwidth to have 8 players with thousands of units and sending the positions and orientation etc in (almost) every frame... So I looking for better opinions, (or even tips on migrating the code to fixed-point without messing everything up...)

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