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  • Maintaining single instance application

    - by Semas
    Hello. I have been working on this application of mine and got this problem. Running program through command line with different arguments opens different .exe process. My question is how can i prevent from opening same file few times, and is it possible to send new command line arguments to already open instance of application. Thanks.

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  • [java] run 2 threads simultaneously

    - by lamsaitat
    hi all, in the case of an IM client. i have made 2 separate threads to handle sending packets (by std io) and receiving packets. the question is how to make these 2 threads run simultaneously so that i can keep prompting for input while at the same time be ready to receive packets at any time? i have already tried setting a timer but the data is always lost receiving.

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  • Get Row of DataGrid in User Control Page

    - by Romil
    My Question is related to access the rows in one page and putting conditions in another page. I need to check whether a datagrid has row in it or not. DataGrid is in .aspx page. Based on this checking i need to write a condition in .ascx page. the .ascx on which condition is checked is linked to .aspx page. Meaning that UserControl1.ascx is Register with Default.aspx page I am using VS 2003 Please advice Thanks

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  • Get spiral index from location

    - by ricick
    I'm using Alberto Santini's solution to this question to get a spiral grid reference based on an items index Algorithm for iterating over an outward spiral on a discrete 2D grid from the origin It's not the accepted solution, but it's the best for my needs as it avoids using a loop. It's working well, but what I want now is to do the inverse. Based on a known x and y coordinate return the index of a location. This is as a precursor to returning the items surrounding a given location.

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  • Returning Null values with COUNT

    - by Randy B.
    With this query, I get a result that is two short of the table because they are not included in count, and I would like get the NULL values in the result. To do this, I am pretty sure I need to use a subquery of some kind, but I am not sure how, since the attribute in question is an aggregate. SELECT Equipment.SerialNo , Name, COUNT(Assignment.SerialNo) FROM Equipment INNER JOIN Assignment ON Assignment.SerialNo = Equipment.SerialNo GROUP BY Equipment.SerialNo, Name

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  • How to insert item which type is QString to a ComboBox in Qt?

    - by Hanny
    I have an item which type is QString: for example: QString name="Name" the question is: How can I put this name variable into a combobox? I've read the Qt 4.6.2 docs but still cant figure out how to do that. Please dont refer me back to that Qt 4.6.2 docs again.. Please help me ASAP!! this is really urgent! thank you very much!! :)

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  • How to do a back-reference on Google AppEngine?

    - by jCuga
    I'm trying to access an object that is linked to by a db.ReferenceProperty in Google app engine. Here's the model's code: class InquiryQuestion(db.Model): inquiry_ref = db.ReferenceProperty(reference_class=GiftInquiry, required=True, collection_name="inquiry_ref") And I am trying to access it in the following way: linkedObject = question.inquiry_ref and then linkedKey = linkedObject.key but it's not working. Can anyone please help?

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  • Javascript to detect if a div is contained inside another and when is not anymore

    - by user3668732
    i have a question. I need to detect using javacript (or JQuery) when a div is contained inside another and when is not contained anymore. I need something like this: if(div #result).contains (div #dbResults) then{#explainMsg.hide, #errorMsg.hide; if(div #result).not contains (div #dbResults) anymore then {#errorMsg.show}. the "not contains anymore" part is because the div's are added dynamically server side. Obliviously is not the code, but what i need to obtain. thanks

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  • Book with C programs that have real programming examples.

    - by Siamore
    This is my first question on Stack Overflow, I would like to know about any c programming books that have real programs to introduce real problems as opposed to standard books with examples aimed to teach the language it should be sort of like a challenge with solutions so that concepts like recursion can be used i know that i should find solutions to existing problems to learn the language but this is my first attempt and i find it hard to understand some simple problems so i was hoping for a book with solutions.

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  • Safe vs Unsafe code

    - by Lumpy
    Read this question today about safe and unsafe code I then read about it in MSDN but I still don't understand it. Why would you want to use pointers in C#? Is this purely for speed?

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  • Php on windows and blocks

    - by zerkms
    My development PC has windows installed. And I've experienced weird php behaviour: <?php file_put_contents('c:/q', microtime(1) . "\r\n", FILE_APPEND); sleep(10); When I run this script in browser simultaneously in two different tabs I get such results 1294713622.125 1294713632.2188 which obviously is not what I expected, although in CLI everything is fine. So the question: what can block execution? (session.auto_start is Off)

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  • Access specifier's and classes and objects?

    - by TimothyTech
    Alright, im trying to understand this, so a class is simply creating a template for an object. class Bow { int arrows; }; and an object is simply creating a specific item using the class template. Bow::Bow(arrows) { arrows = 20; } also another question, public specifiers are used to make data members avaible in objects and private specifiers are used to make data memebers only avaialble inside the class?

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  • Suggestions related to Android final application?

    - by UMMA
    dear friends, i have completed my First android application and i have deployed that application to different android based mobile phones which is working fine. my question to you is, is there iphone store like thing exists in android to upload your application by paying fee to android store or something like that.. or nothing or should i start passing my application to end users directly? any help would be appriciated.

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  • scaling axes in Mathematica

    - by lak3rs
    I'm sure this is an incredibly simple question but I've recently started using Mathematica so it's all new to me. How do you scale the y axis? I try the following but it won't compile. Plot[y = {Exp[-(x^2+3x+2)]}, {x, 0, 5}, {y, 0, 1}]

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  • Links pointing to a page

    - by Mio
    I know this is not a programming question, but I couldn't think of where else to ask. Does google or anybody else have a feature to let you see the list of sites pointing to a given link?

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