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• Forking Multiple Apps Under Python Subprocess

  - by noxtion

  Hello all. I have been looking through Google and SO for something that could help me solve this but I have run into a block. I am a bit new to Python but I am looking for a way to run multiple apps that will continuously run in the background. For example, I need 4 apps to start up with a param -appnum set to a different value. I would like to use python to count up and then start up a new app that will continue to run. I assumed I would use subprocess but I feel a bit overwhelmed by the documentation. I also plan to have the app print out sequences of numbers and would like to redirect this to a file. I noticed some of the SO questions talked about this, but I am a little confused on what to do. -Mike

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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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• How can I switch off exception handling in MSVC?

  - by Tamara

  Does anybody know how to switch off exception handling option in MSVC? I tried to set the option 'Enable C++ exceptions' to 'NO' and I got warning: warning C4530: C++ exception handler used, but unwind semantics are not enabled. Specify /EHsc I would like to switch off the exception handler, too, but I don't know how. In my application I basically need more speer than stability, therefore I chose switching off the exception handling. I do not have any try/catch blocks, but I do use STL. When I switch the option 'Enable C++ exceptions' to 'NO' is there any way how to get rid of those warnings?

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• Is it possible to start an activity from a regular java class?

  - by Yotam

  In my ActionBarSherlock I have the same menu items for all activities, so it seems unwise to define onClick handlers in each activity - they all do the same. Instead I created a class called MyClickListener that implements com.actionbarsherlock.view.MenuItem.OnMenuItemClickListener, and in there I have a simple switch block that starts the appropriate activity. Problem is that Intent constructor's first argument is of type Context, and even when I pass this to MyClickListener's constructor, I can't start any activity. The same goes for every method that has a Context object as a parameter. Is there a way to work around it? What is a context object? Thanks

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• Using getElementById inside user control

  - by toraan

  I have a usercontrol that hides a div when a button is clicked. <asp:LinkButton ID="lnkbtn" OnClientClick="ShowHide(); return false;" runat="server" /> <div id="popupPage" style="display:none;"> </div> function ShowHideGotoPopUp() { var ob = document.getElementById("popupPage"); if (ob.style.display == "none") ob.style.display = "block"; else ob.style.display = "none" } There is a problem when I place on page more then 1 usercontrol, all controls has div with same id = popupPage.

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• Attempted to perform an unauthorized operation

  - by Lefteris Gkinis

  Now I use the following code: Public Function SetACL(ByVal filename As String, ByVal account As String, ByVal sender As Object, ByVal e As System.EventArgs) As Boolean Try Dim rule As FileSystemAccessRule = New FileSystemAccessRule(account, FileSystemRights.Write, AccessControlType.Allow) Dim fp As PermissionSet = New PermissionSet(Permissions.PermissionState.Unrestricted) fp.AddPermission(New FileIOPermission(FileIOPermissionAccess.Read, filename)) fp.AddPermission(New FileIOPermission(FileIOPermissionAccess.Write, filename)) fp.AddPermission(New FileIOPermission(FileIOPermissionAccess.PathDiscovery, filename)) fp.Assert() Dim di As DirectoryInfo = New DirectoryInfo(Path.GetDirectoryName(filename)) SetACL = False Dim security As DirectorySecurity = di.GetAccessControl(AccessControlSections.Access) security.ModifyAccessRule(AccessControlModification.Add, rule, SetACL) di.SetAccessControl(security) Return SetACL Catch ex As Exception MessageBox.Show(ex.Message, "Set Security Sub", MessageBoxButtons.OK, MessageBoxIcon.Stop) Finalize() End Try End Function The Error of 'Attempted to perform an unauthorized operation' comes when i'm trying to execute the instraction Dim security As DirectorySecurity = di.GetAccessControl(AccessControlSections.Access) Please if anybody knows why that error comes here to respond

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• What is the best way to declare a property?

  - by Simon

  Hi. We declare properties using the @property keyword and synthesize it in the implementation file. My question is, What if I declare a property using the @property keyword and also declare a variable in the interface block with the same name? For example, consider the following code, Interface: @interface myClass : NSObject { NSString *myClass_name; // LINE 1 } @property(nonatomic, retain) NSString *myClass_name; // LINE 2 @end Implementation: @implementation myClass @synthesize myClass_name // LINE 3 @end Declaring myClass_name in LINE 1 will make any problem? Like any reference problem or any unnecessary memory consumption problem?

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• Request/Response pattern in SOA implementation

  - by UserControl

  In some enterprise-like project (.NET, WCF) i saw that all service contracts accept a single Request parameter and always return Response: [DataContract] public class CustomerRequest : RequestBase { [DataMember] public long Id { get; set; } } [DataContract] public class CustomerResponse : ResponseBase { [DataMember] public CustomerInfo Customer { get; set; } } where RequestBase/ResponseBase contain common stuff like ErrorCode, Context, etc. Bodies of both service methods and proxies are wrapped in try/catch, so the only way to check for errors is looking at ResponseBase.ErrorCode (which is enumeration). I want to know how this technique is called and why it's better compared to passing what's needed as method parameters and using standard WCF context passing/faults mechanisms?

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• How get divs count in jquery?

  - by Pandiya Chendur

  I used this jquery each function and iterated my json data with it.... $.each(data.Results, function() { divs += '<div class="resultsdiv"><br /> <span style="display: inline-block;width:150px;" class="resultName">' + this.Mat_Name + '</span><span class="resultfields" style="padding-left:10px;"> Measurement&nbsp;:</span>&nbsp;<span class="resultfieldvalues">' + this.Mes_Name + '</span>&nbsp;<a href="/Materials/Delete/' + this.Id + '"> Delete</a>&nbsp;<a href="/Materials/Details/' + this.Id + '">Details</a>&nbsp; <a href="/Materials/Edit/' + this.Id + '">Edit</a></div>'; }); alert(divs.length); doesnt seem to get the count.... Any suggestion...

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• Can a function defined in a bookmarklet be called from a page-level script?

  - by Soviut

  I have a bookmarklet that needs to open a new window/tab. In order to avoid the popup blocker, I need to call the window.open() method directly in the bookmarklet ie: at the browser-level. However, I want to keep the bookmarklet updatable by loading external Javascript files. To do this, the bookmarklet needs to append script nodes to the DOM. If i were to put window.open() code in one of these externally loaded scripts, the popup blocker would block it since its page-level. What I want to know is if I can create a wrapper function around window.open() in my bookmarklet, then call it from the externally loaded script? What is the scope and what are the permissions on a wrap such as this?

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• How-to handle errors in Vim Script ?

  - by ereOn

  In my .vimrc file, I have the following function, which folds the licensing information on the top of some .hpp and .cpp files: " Skip license function! FoldLicense() if !exists("b:foldedLicense") let b:foldedLicense = 1 1;/\*\//fold endif endfunction au BufRead *.hpp call FoldLicense() au BufRead *.cpp call FoldLicense() This works well, but if I open a .cpp file which doesn't have any licensing information block, Vim complains that the pattern is not found. Fair enough, but is there a way so that he stops complaining and just does nothing if the pattern is not found ? Thanks !

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• How send sms 2automatically 2 a paricular no: only?

  - by royalcasanova

  import net.rim.device.api.io.; import net.rim.device.api.system.; import javax.microedition.io.; import java.util.; import java.io.*; public class SendSms extends Application { private static final int MAX_PHONE_NUMBER_LENGTH = 32; private String addr = "15191112222"; private String msg = "This is a test message."; private DatagramConnection _dc = null; private static String _openString = "sms://"; public static void main(String[] args) { new SendSms().enterEventDispatcher(); } public SendSms() { try { _dc = (DatagramConnection)Connector.open(_openString); byte[] data = msg.getBytes(); Datagram d = _dc.newDatagram(_dc.getMaximumLength()); d.setAddress("//" + addr); _dc.send(d); } catch ( IOException e) {} System.exit(0); } }

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• What difference does it make to use several script blocks on a web page?

  - by Jan Aagaard

  What difference does it make to use more than one script block on a web page? I have pasted in the standard code for including Google Analytics as an example, and I have seen the same pattern used in other places. Why is this code separated into two separate script blocks instead of just using a single one? <script type="text/javascript"> var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); </script> <script type="text/javascript"> try{ var pageTracker = _gat._getTracker("UA-xxxxxx-x"); pageTracker._trackPageview(); } catch(err) {} </script>

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• How to avoid recursion in Java SecurityManager checkConnect?

  - by Zilupe

  I'm trying to take control of a Java code base that does lots of un-documented things. I'm using a custom SecurityManager to check permission requests. Specifically, my code is checking SocketPermission checks -- checkConnect. checkConnect is called when the application tries to resolve a host name to IP address and to connect to a specific IP address. The problem is that I don't know how to properly call host name resolution (InetAddress.getAddressByName) without falling into infinite recursion, because normally checkConnect is called even when I resolve the name from inside the SecurityManager.checkConnect. I have read on the web that I have to call the address resolution from a doPrivileged block, but no idea how. P.S. Is this possible without writing any policy files?

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• simulate to change the background color when click the link

  - by tom

  I have the following HTML and the java script below to simulate the background color change when the link block is clicked, but it doesn't seem to work. Any reason why? If I have only the onmousedown event handled, the background color will be changed to blue for sure. But if both onmousedown and onmouseup are handled, nothing would change visually. note... function changeColorOnMouseDown() { document.getElementById('note').style.background='blue'; } function changeColorOnMouseUp() { document.getElementById('note').style.background='#d8dde7'; }

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• How to force main Acivity to wait for subactivity in Android?

  - by rmaster

  hi, I am calling a subactivity from main activity. This subactivity should take few numbers from user (i'm using Edit text control to achieve this), save them to static variable in another class and terminate. I want main activity to wait for subactivity but both are just running simultaneously. Even doing sth like that doesn't help: Thread t = new Thread(new Runnable(){ public void run(){ Log.v("==================", "run "+new Date()); startActivityForResult(new Intent(ctx,myCustomSubactivity.class),1); } }); Log.v("==================", "calling run "+new Date()); t.start(); try { t.join(); } catch (InterruptedException e) {Log.v("==================", "can't join");} Log.v("==================", "back from activity "+new Date()); do you know how to force main activity to wait? Thread.wait() method is not supported in Android(program throws error).

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• How do I create a hybrid two column lay out like php.net?

  - by Koning WWWWWWWWWWWWWWWWWWWWWWW

  I want to create a layout like this: | | | | | | | | | | | | | | | | -FIXED-|--------FLUID---------| | | | | | | | | | | | | | | Just like http://www.php.net/ I have this: div#sidebar { float: left; width: 200px; padding: 4px; background-color: #EEEEEE; border-right: dashed 1px #AAAAAA; } div#content { padding: 4px; margin-left: 208px; } But the problem is that the sidebar isn't at least the height of the content block (which it should be). Can anyone help me? Thanks Oh, one more thing: I will never, ever use a table for this!

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• Three boolean values saved in one tinyint

  - by Casper

  Hello, probably a simple question but I seem to be suffering from programmer's block. :) I have three boolean values: A, B, and C. I would like to save the state combination as an unsigned tinyint (max 255) into a database and be able to derive the states from the saved integer. Even though there are only a limited number of combinations, I would like to avoid hard-coding each state combination to a specific value (something like if A=true and B=true has the value 1). I tried to assign values to the variables so (A=1, B=2, C=3) and then adding, but I can't differentiate between A and B being true from i.e. only C being true. I am stumped but pretty sure that it is possible. Thanks

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• Is there a faster way to download a page from the net to a string?

  - by cphil5

  I have tried other methods to download info from a URL, but needed a faster one. I need to download and parse about 250 separate pages, and would like the app to not appear ridiculously slow. This is the code I am currently using to retrieve a single page, any insight would be great. try { URL myURL = new URL("http://www.google.com"); URLConnection ucon = myURL.openConnection(); InputStream inputStream = ucon.getInputStream(); BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream); ByteArrayBuffer byteArrayBuffer = new ByteArrayBuffer(50); int current = 0; while ((current = bufferedInputStream.read()) != -1) { byteArrayBuffer.append((byte) current); } tempString = new String(byteArrayBuffer.toByteArray()); } catch (Exception e) { Log.i("Error",e.toString()); }

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• In a pre-commit hook - how to access/compare current and previous versions of files

  - by EthanML

  I'm trying to add to our existing pre-commit SVN hook so that it will check for and block an increase in file size for files in specific directory/s. I've written a python script to compare two file sizes, which takes two files as arguments and uses sys.exit(0) or (1) to return the result, this part seems to work fine. My problem is in calling the python script from the batch file, how to reference the newly committed and previous versions of each file? The existing code is new to me and a mess of %REPOS%, %TXN%s etc and I'm not sure how to go about using them. Is there a simple, standard way of doing this? It also already contains code to loop through the changed files using svnlook changed, so that part shouldn't be an issue. Thanks very much

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• Centering images php

  - by peak

  I'm trying to center an image in php. I'm currently using this line of code echo '<img src="newimage.jpg" width="110" height="120" class="centre">'; However, this seems to have no effect. I've also tried using something like this, img.center { display: block; margin-left: auto; margin-right: auto; } <img src="newimage.jpg" alt="Suni" class="center" /> but this merely gives me a syntax error, how do I go about fixing this? Thanks

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• When should one let an application crash because of an exception in Java (design issue)?

  - by JVerstry

  In most cases, it is possible to catch exceptions in Java, even unchecked ones. But, it is not necessarily possible to do something about it (for example out of memory). For other cases, the issue I am trying to solve is a design principle one. I am trying to set-up a design principle or a set of rules indicating when one should give up on an exceptional situation, even if it is detected in time. The objective is trying to not crash the application as much as possible. Has someone already brainstormed and communicated about this? I am looking for specific generic cases and possible solutions, or thumb-rules. UPDATE Suggestions so far: Stop running if data coherency can be compromised Stop running if data can be deleted Stop running if you can't do anything about it (Out of memory...) Stop running if key service is not available or becomes unavailable and cannot be restarted If application must be stopped, degrade as gracefully as possible Use rollbacks in db transactions Log as much relevant information as you can Notify the developers

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• Make text appear briefly in a JPanel

  - by Roo

  Hi, I am trying to make text appear briefly before it disappears. It would be along the lines of 1) Set color to black 2) wait x amount of seconds 3) set color to background color The method I call is repaint(), which then calls paintComponent(Graphics painter). repaint() is called only if I press the space-bar. I thought of trying repaint();Thread.sleep(1000);repaint(); (I do catch the Interrupt exception, just not shown), but it only calls paintComponent once per space-bar . Is there an easy way to do this or is this something that is a bit challenging?

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• Best practices: displaying text that was input via multi-line text box

  - by chris

  I have a multi-line text box. When users simply type away, the text box wraps the text, and it's saved as a single line. It's also possible that users may enter line breaks, for example when entering a "bulleted" lists like: Here are some suggestions: - fix this - remove that - and another thing Now, the problem occurs when I try to display the value of this field. In order to preserve the formatting, I currently wrap the presentation in <pre> - this works to preserve user-supplied breaks, but when there's a lot of text saved as a single line, it displays the whole text block as single line, resulting in horizontal scrolling being needed to see everything. Is there a graceful way to handle both of these cases?

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• How do i hide html until its processed with javascript?

  - by acidzombie24

  I am using some JS code to transform my menu into a drilldown menu. The problem is before it runs the JS you see a BIG UGLY mess of links. On their site its solved by putting the js at the top. Using recommendations by yahoo/YSlow i am keeping the JS files at the bottom. I tried hiding the menu with display:none then using jquery to .show(), .css('display', ''), .css('display', 'block') and they all lead up to a messsed up looking menu (i get the title but not the title background color or any links of the menu) How do i properly hide a div/menu and show it after being rendered?

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