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  • How to dispose a Writeable Bitmap? (WPF)

    - by Mario
    Some time ago i posted a question related to a WriteableBitmap memory leak, and though I received wonderful tips related to the problem, I still think there is a serious bug / (mistake made by me) / (Confusion) / (some other thing) here. So, here is my problem again: Suppose we have a WPF application with an Image and a button. The image's source is a really big bitmap (3600 * 4800 px), when it's shown at runtime the applicaton consumes ~90 MB. Now suppose i wish to instantiate a WriteableBitmap from the source of the image (the really big Image), when this happens the applications consumes ~220 MB. Now comes the tricky part, when the modifications to the image (through the WriteableBitmap) end, and all the references to the WriteableBitmap (at least those that I'm aware of) are destroyed (at the end of a method or by setting them to null) the memory used by the writeableBitmap should be freed and the application consumption should return to ~90 MB. The problem is that sometimes it returns, sometimes it does not. Here is a sample code: // The Image's source whas set previous to this event private void buttonTest_Click(object sender, RoutedEventArgs e) { if (image.Source != null) { WriteableBitmap bitmap = new WriteableBitmap((BitmapSource)image.Source); bitmap.Lock(); bitmap.Unlock(); //image.Source = null; bitmap = null; } } As you can see the reference is local and the memory should be released at the end of the method (Or when the Garbage collector decides to do so). However, the app could consume ~224 MB until the end of the universe. Any help would be great.

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  • pagination for displaytag with colorbox in Spring framework

    - by Hitesh Solanki
    Hi..... I want to display the pop up for user selection using colorbox. I have put link on manageblacklist.jsp named 'select'. when I click on 'select' link ,colorbox is displayed. all user is displayed but pagination is not worked. I have used display tag for pagination. Without using colorbox, pagination is worked fine. I have used spring framework. The code of manageblacklist.jsp is given below: <%@ page contentType="text/html" pageEncoding="UTF-8" import="java.util.*"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <%@ include file="/WEB-INF/jsp/include.jsp" %> <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %> <%@ taglib uri="http://displaytag.sf.net" prefix="display" %> <%@ page import="com.sufalam.mailserver.bean.User"%> <%@ page import="javax.servlet.http.HttpSession" %> <% String pageSize = (String) request.getAttribute("pageSize"); System.out.println("page size:" + pageSize); HttpSession session1 = request.getSession(); List<User> userList = (List<User>) session1.getAttribute("userList"); Iterator iterator = userList.iterator(); String user = (String) request.getAttribute("user"); System.out.println("user in the jsp :" + user); %> <html> <head> <script type="text/javascript" src="js/jquery142.js"></script> <script type="text/javascript" src="js/jquery.colorbox.js"></script> <link rel="stylesheet" href="style/colorbox.css" type="text/css"> <script type="text/javascript"> $(document).ready(function(){ //Examples of how to assign the ColorBox event to elements $(".example5").colorbox(); //Example of preserving a JavaScript event for inline calls. $("#click").click(function(){ $('#click').css({"background-color":"#f00", "color":"#fff", "cursor":"inherit"}).text("Open this window again and this message will still be here."); return false; }); }); </script> <script type="text/javascript"> function changePageSize() { var myValue = document.getElementById("combo1").value; document.getElementById("selectedPageSize").value=myValue; document.whitelistBlacklistForm.submit(); } function selectAll() { var selectAll = document.getElementById("checkAll"); var returnById = document.getElementsByName("check"); var i; var val; if (selectAll.checked == true) { val = true; } else { val = false; } for (i = 0; i < returnById.length; i++) { returnById[i].checked = val; } } function onload() { insertNavigation ('insertHereTop', 'insertHereBottom'); } function insertNavigation( topElementID, BottomElementID ) { if ( document.getElementById('pagingBanner') ){ document.getElementById(topElementID).innerHTML=document.getElementById('pagingBanner').innerHTML; document.getElementById(BottomElementID).innerHTML=document.getElementById('pagingBanner1').innerHTML; } } function confirmDelete() { if (confirm("Are you sure you want to delete selected records?")) { flag = 1; return true; } else { return false; } } function loadModels() { var flag=true; var textValue = document.getElementById('txtuser'); $.getJSON("ajaxblacklist.htm", // url { param :textValue.value }, // request params function(json) { // callback // var options = '<table class="displayTable" cellspacing="0"><thead><tr><th align = "center">Blacklisted Sender</th>'+ // '<th align ="center">Delete</th></tr></thead><tbody>'; var options = '<table width="100%" border="0" cellspacing="0" cellpadding="0"><tr><td style="background:url(images/leftbg.gif) repeat-y; width:8px;"></td>' + '<td class="middlesection"><table width="100%" border="0" cellspacing="0" cellpadding="0"><tr>' + '<td height="30" class="p10"><table width="100%" border="0" cellspacing="0" cellpadding="0" class="allboder" >' + '<tr><td class="tebelhd"> Blacklisted Sender </td></tr>'; for (i in json) { var state = json[i]; for(j in state){ var op = state[j]; if(op.length==undefined){ options += '<tr><td class="tdhd"><table width="0%" border="0" cellspacing="0" cellpadding="0"><tr><td width="741">'+ state[j].senderEmail + '</td><td align="center" width="148"><a href="managewhitelistblacklist.htm?sender='+state[j].senderEmail+'&recipient='+ state[j].recipientEmail+'&action=delete"><span> <img src="/MailServerV2/images/delete.gif"/> </span></a></td></tr></table></td></tr>'; break; } for(k in op) { if(flag == true) { flag = false; options += '<tr><td class="tdhd"><table width="0%" border="0" cellspacing="0" cellpadding="0"><tr>'; } else { flag = true; options += '<tr><td class="tdhd2"><table width="0%" border="0" cellspacing="0" cellpadding="0"><tr>'; } options += '<td width="741">'+ op[k].senderEmail +'</td><td align="center" width="148"><a href="managewhitelistblacklist.htm?sender='+op[k].senderEmail+'&recipient='+op[k].recipientEmail+'&action=delete"><span> <img src="/MailServerV2/images/delete.gif"/> </span></a></td></tr></table></td></tr>'; } } } options += '</td></tr></table>'; $("div[name^=blacklist]").html(options); }); } </script> </head> <body> <table width="" border="0" align="center" cellpadding="0" cellspacing="0" class="maintable"> <tr> <td class="topsection"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td valign="top" align="center" class="middlesection" ><table width="96%" border="0" cellspacing="0" cellpadding="0"> <tr> <td >&nbsp;</td> </tr> <tr> <td> <table width="100%" border="0" cellspacing ="0" cellpadding="0"> <tr> <td> <table width="100%" border="0" cellspacing="0" cellpadding="3"> <tr> <td align="left" valign="middle"><h1>Manage Blacklist</h1></td> <td align="right" valign="bottom"><div style="float:right;"><a href="savewhitelistblacklist.htm" class="buttonash"><span>Create Whitelist Blacklist </span></a></div></td> </tr> </table></td> </tr> <tr> <td class="bottomboder"><img src="images/ashish.gif" height="1" /></td> </tr> </table> </td> </tr> <tr> <td>&nbsp;</td> </tr> <tr> <td> </td> </tr> <tr> <td> <div id="TabbedPanels1" class="TabbedPanels"/> <div style="display: block;" class="TabbedPanelsContent"/> <div align="left" class="tebelhd"> Blacklist Information </div><div class="entry-edit"> <div class="fieldset" id="base_fieldset"> <div class="hor-scroll_1" align="left"> <fieldset Class="label1css" style="color:#666666"> <legend>Fields</legend> <table> <tr> <td align="right"> Recipient Email : </td> <td><input type="text" id="txtuser" name="txtuser" <% if (user != null) { %> value="<%=user%>" <% } else { %> value="" <% } %> /> </td> <td><a href="#" class="buttonash" onclick="loadModels()"><span>Search</span></a></td> <!-- <td><a href="javascript:void(0)" class="buttonash" onclick="window.open('selectuser.htm','selectuser','width=600,height=400,menubar=yes,status=yes,location=yes,toolbar=yes,scrollbars=yes');" ><span>Select</span></a></td>--> <td><a href="selectuser.htm" class="example5 buttonash" ><span>Select</span></a> </td> <td align="right"> </td> </tr> </table> </fieldset> <div id="blacklist" name="blacklist"></div> </div> </div> </div> </td> </tr> </table> </td> </tr> </table> </td> <!-- InstanceEndEditable --> <td style="background:url(images/rightbg.gif) repeat-y; width:8px;"></td> </tr> </table> <% // session1.removeAttribute("user"); %> </body> </html> So , please tell me how to work pagination .... Thanks in advanced...

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  • How to assign RelayCommand to Click or SelectedIndexChanges events?

    - by Hikari
    Hello, I'm just starting with MVVM light, but so far it allowed me to solve some of my issues. Infortunately I'm struggling with relatively sime issues in Silverlight. Let's assume the following button with EventToCommand: <i:Interaction.Triggers> <i:EventTrigger EventName="MouseEnter"> <GalaSoft_MvvmLight_Command:EventToCommand Command="{Binding UpdateAccountsCommand, Mode=OneWay}" CommandParameter="{Binding SelectedIndex, ElementName=lstLedgers}"/> </i:EventTrigger> </i:Interaction.Triggers> </Button> How to assign this code to SelectedIndexChanged event? Futher issue - how to assign a command in C# code? The problem is as follows: I'm developing Windows Phone 7 app. Application Bar needs to be initiated in C# (as far as I know there is no xaml code for application bar at this stage). As a result I have no idea how to bind a command to a application bat button in from c#, now xaml. Thanks in advance your your help.

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  • How to solve "catastrophic failure" with 32-bit COM component in SysWOW64\cscript or wscript

    - by kcrumley
    I'm trying to run a VBScript script that uses a 7-year-old 3rd-party 32-bit COM component on Windows Server 2008 R2, with the command-line 32-bit script host, SysWOW64\cscript.exe. When I call CreateObject on the class, it appears to be successful, but the very first time I try to use a property or method (I've tried several different ones) on the object, it gives me the "catastrophic failure". I have identical results with SysWOW64\wscript.exe, except, of course, that my error message comes in a msgbox instead of the command-line window. I think this has to do specifically with the 64-bit scripting hosts because of the following: The equivalent Classic ASP script, calling the same component and using 95% of the same code, works correctly on the same server, with IIS configured to support 32-bit COM. The same VBScript works correctly on a 32-bit Windows XP machine and a 32-bit Windows Server 2003 machine. The component fails in exactly the same way on my 64-bit Windows 7 machine. My Google searches for solutions to this problem have mostly turned up a lot of different problems that were solved by putting the COM component into a toolbar in Visual Studio. Obviously, that solution doesn't apply here. My questions are: Is there a core problem that is always behind a "catastrophic failure" from a Windows scripting host calling a COM component? Is there a place in a configuration snap-in, or in the registry, where I need to make a change similar to the change I had to make to the IIS Application pool to "Enable 32-bit Applications"? Is there a general place in the Server 2008 R2 Event Viewer that I should be looking, to see if there are any more details on the failure, in case it turns out to be specific to this component? Thanks in advance.

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  • log4j additivity, category logging level and appender threshold

    - by GBa
    I'm having troubles understanding the relation between additivity, category logging level and appender threshold... here's the scenario (my log4j.properties file): log4j.category.GeneralPurpose.classTypes=INFO, webAppLogger log4j.additivity.GeneralPurpose.classTypes=true log4j.category.GeneralPurpose=ERROR, defaultLogger log4j.additivity.GeneralPurpose=false log4j.appender.webAppLogger=org.apache.log4j.RollingFileAppender log4j.appender.webAppLogger.File=webapps/someWebApp/logs/webApp.log log4j.appender.webAppLogger.MaxFileSize=3000KB log4j.appender.webAppLogger.MaxBackupIndex=10 log4j.appender.webAppLogger.layout=org.apache.log4j.PatternLayout log4j.appender.webAppLogger.layout.ConversionPattern=%d [%t] (%F:%L) %-5p - %m%n log4j.appender.webAppLogger.Encoding=UTF-8 log4j.appender.defaultLogger=org.apache.log4j.RollingFileAppender log4j.appender.defaultLogger.File=logs/server.log log4j.appender.defaultLogger.MaxFileSize=3000KB log4j.appender.defaultLogger.MaxBackupIndex=10 log4j.appender.defaultLogger.layout=org.apache.log4j.PatternLayout log4j.appender.defaultLogger.layout.ConversionPattern=%d [%t] (%F:%L) %-5p - %m%n log4j.appender.defaultLogger.Encoding=UTF-8 insights: category GeneralPurpose.classTypes is INFO category GeneralPurpose.classTypes has additivity TRUE category GeneralPurpose is ERROR category GeneralPurpose has additivity FALSE with the current configuration I would have assumed that INFO messages sent to category GeneralPurpose.classTypes.* would be only logged to webAppLogger since the parent logger (cateogry) is set with ERROR level logging. However, this is not the case, the message is logged twice (one in each log file). Looks like the ERROR logging level for the parent category is not taken into consideration when the event is sent as part of additivity... is my observation correct or am I missing something ? how should I alter the configuration in order to achieve only ERROR level loggings in server.log ? thanks, GBa.

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  • YUI DataTable with JSON and client side filtering Data Error

    - by user316574
    Hi, I don't understand what I'm doing wrong here ! I keep getting a Data Error. But I validated the JSON and it's ok... Here is the javascript from the YUI Datatble example (slightly modified). <div class="markup"> <label for="filter">Filter by state:</label> <input type="text" id="filter" value=""> <div id="tbl"></div> -- YAHOO.util.Event.addListener(window, "load", function() { //var Ex = YAHOO.namespace('example'); var dataSource = new YAHOO.util.DataSource("jsondb/json_meta_proxy.html",{ responseType : YAHOO.util.DataSource.TYPE_JSON, responseSchema : { resultsList: "records", fields: [ {key:"idprojet"}, {key:"nomprojet"} ], metaFields: { totalRecords: "totalRecords" } }, doBeforeCallback : function (req,raw,res,cb) { // This is the filter function var data = res.results || [], filtered = [], i,l; if (req) { req = req.toLowerCase(); for (i = 0, l = data.length; i and here is the JSON data in the file "jsondb/json_meta_proxy.html" { "recordsReturned": 1, "totalRecords": 1, "startIndex": 0, "sort": "idprojet", "dir": "asc", "records": [ { "idprojet": "11256", "nomprojet": "" } ] } Many thanks for your help !!!

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  • Android Scan for Wifi networks

    - by Nils
    Hello, I'm trying to scan for wireless networks and found this helpful source on the net. Unfortunately it's not working and I have no idea why. My problem is that I can't wait 10 minutes for the result - I need them within a few seconds and thought about setting the boolean variable waiting on false as soon as I get a result.... well, it runs forever ... looks like nothing is received. Any idea ? Thanks. // -- Sample WiFi implementation - http://groups.google.com/group/android-developers/browse_thread/thread/f722d5f90cfae69 IntentFilter i = new IntentFilter(); i.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); registerReceiver(new BroadcastReceiver(){ @Override public void onReceive(Context c, Intent i){ // Code to execute when SCAN_RESULTS_AVAILABLE_ACTION event occurs mWifiManager = (WifiManager) c.getSystemService(Context.WIFI_SERVICE); wireless = mWifiManager.getScanResults(); // Returns a <list> of scanResults waiting = false; } } ,i); // -- End Wifi Sample mWifiManager.startScan(); while (waiting) { try { Thread.sleep(200); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } Log.d("PROJECT1","Wifi WAITING"); }

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  • online quiz using ASP dot NET

    - by wacky_coder
    Hii, I need to develop an online quiz website that would be having MCQs. I would want to have one question appearing per page with a Numeric Pager so that the user can go back and forth. I tried using the FormView for displaying the questions and RadioButtons. I created a class QANS that would hold the answer selected by the user for the questions that he did answer so that I can later sum up the total Score. Now, the problem I'm facing is as below: Let the user select a RadioButton, say R, on a PageIndex, say I, and then go to some other page, say K. When the user returns back to page I, none of the RadioButtons is selected. I tried adding code for setting the Checked property of the RadioButton true in the Page_Load(), but it didn't help. I also tried the same with the PageIndexChanged and PageIndexChanging event, but the RadioButton doesn't get checked. The RadioButton that was selected for a particular question has been stored and I am able to print which one it was using Response.Write() but I'm not able to keep the RadioButton Checked. How shall this be done?

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  • Issue allowing custom Xml Serialization/Deserialization on certain types of field

    - by sw1sh
    I've been working with Xml Serialization/Deserialization in .net and wanted a method where the serialization/deserialization process would only be applied to certain parts of an Xml fragment. This is so I can keep certain parts of the fragment in Xml after the deserialization process. To do this I thought it would be best to create a new class (XmlLiteral) that implemented IXmlSerializable and then wrote specific code for handling the IXmlSerializable.ReadXml and IXmlSerializable.WriteXml methods. In my example below this works for Serializing, however during the Deserialization process it fails to run for multiple uses of my XmlLiteral class. In my example below sTest1 gets populated correctly, but sTest2 and sTest3 are empty. I'm guessing I must be going wrong with the following lines but can't figure out why.. Any ideas at all? Private Sub ReadXml(ByVal reader As System.Xml.XmlReader) Implements IXmlSerializable.ReadXml Dim StringType As String = "" If reader.IsEmptyElement OrElse reader.Read() = False Then Exit Sub End If _src = reader.ReadOuterXml() End Sub Full listing: Imports System Imports System.Xml.Serialization Imports System.Xml Imports System.IO Imports System.Text Public Class XmlLiteralExample Inherits System.Web.UI.Page Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim MyObjectInstance As New MyObject MyObjectInstance.aProperty = "MyValue" MyObjectInstance.XmlLiteral1 = New XmlLiteral("<test1>Some Value</test1>") MyObjectInstance.XmlLiteral2 = New XmlLiteral("<test2>Some Value</test2>") MyObjectInstance.XmlLiteral3 = New XmlLiteral("<test3>Some Value</test3>") ' quickly serialize the object to Xml Dim sw As New StringWriter(New StringBuilder()) Dim s As New XmlSerializer(MyObjectInstance.[GetType]()), xmlnsEmpty As New XmlSerializerNamespaces xmlnsEmpty.Add("", "") s.Serialize(sw, MyObjectInstance, xmlnsEmpty) Dim XElement As XElement = XElement.Parse(sw.ToString()) ' XElement reads as the following, so serialization works OK '<MyObject> ' <aProperty>MyValue</aProperty> ' <XmlLiteral1> ' <test1>Some Value</test1> ' </XmlLiteral1> ' <XmlLiteral2> ' <test2>Some Value</test2> ' </XmlLiteral2> ' <XmlLiteral3> ' <test3>Some Value</test3> ' </XmlLiteral3> '</MyObject> ' quickly deserialize the object back to an instance of MyObjectInstance2 Dim MyObjectInstance2 As New MyObject Dim xmlReader As XmlReader, x As XmlSerializer xmlReader = XElement.CreateReader x = New XmlSerializer(MyObjectInstance2.GetType()) MyObjectInstance2 = x.Deserialize(xmlReader) Dim sProperty As String = MyObjectInstance2.aProperty ' equal to "MyValue" Dim sTest1 As String = MyObjectInstance2.XmlLiteral1.Text ' contains <test1>Some Value</test1> Dim sTest2 As String = MyObjectInstance2.XmlLiteral2.Text ' is empty Dim sTest3 As String = MyObjectInstance2.XmlLiteral3.Text ' is empty ' sTest3 and sTest3 should be populated but are not? xmlReader = Nothing End Sub Public Class MyObject Private _aProperty As String Private _XmlLiteral1 As XmlLiteral Private _XmlLiteral2 As XmlLiteral Private _XmlLiteral3 As XmlLiteral Public Property aProperty As String Get Return _aProperty End Get Set(ByVal value As String) _aProperty = value End Set End Property Public Property XmlLiteral1 As XmlLiteral Get Return _XmlLiteral1 End Get Set(ByVal value As XmlLiteral) _XmlLiteral1 = value End Set End Property Public Property XmlLiteral2 As XmlLiteral Get Return _XmlLiteral2 End Get Set(ByVal value As XmlLiteral) _XmlLiteral2 = value End Set End Property Public Property XmlLiteral3 As XmlLiteral Get Return _XmlLiteral3 End Get Set(ByVal value As XmlLiteral) _XmlLiteral3 = value End Set End Property Public Sub New() _XmlLiteral1 = New XmlLiteral _XmlLiteral2 = New XmlLiteral _XmlLiteral3 = New XmlLiteral End Sub End Class <System.Xml.Serialization.XmlRootAttribute(Namespace:="", IsNullable:=False)> _ Public Class XmlLiteral Implements IXmlSerializable Private _src As String Public Property Text() As String Get Return _src End Get Set(ByVal value As String) _src = value End Set End Property Public Sub New() _src = "" End Sub Public Sub New(ByVal Text As String) _src = Text End Sub #Region "IXmlSerializable Members" Private Function GetSchema() As System.Xml.Schema.XmlSchema Implements IXmlSerializable.GetSchema Return Nothing End Function Private Sub ReadXml(ByVal reader As System.Xml.XmlReader) Implements IXmlSerializable.ReadXml Dim StringType As String = "" If reader.IsEmptyElement OrElse reader.Read() = False Then Exit Sub End If _src = reader.ReadOuterXml() End Sub Private Sub WriteXml(ByVal writer As System.Xml.XmlWriter) Implements IXmlSerializable.WriteXml writer.WriteRaw(_src) End Sub #End Region End Class End Class

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  • NSCollectionView subclass doesn't call drawRect during drag session despite setNeedsDisplay

    - by Alain Vitry
    Greetings, I am puzzled as to how and when drawRect is supposed to be called in a NSCollectionView subclass. I implement drag and drop operation in order to move NSCollectionViewItems within the collection, and would like to draw a visual indication of where the drop would end. The subclass does not call drawRect during the drag session. (It does during scroll) Is this the intended operation ? Any hint on how to implement this behavior properly are welcome. A full xcode project of the following code is available at: http://babouk.ovh.org/dload/MyCollectionView.zip Best regards Code sample: @interface CollectionViewAppDelegate : NSObject <NSApplicationDelegate> { NSWindow *window; NSMutableArray *collectionContent; } /* properties declaration */ /* KVC compliance declarations */ @end @interface MyCollectionView : NSCollectionView @end @interface ItemModel { NSString *name; } @property (copy) NSString *name; @end @implementation MyCollectionView - (void)drawRect:(NSRect)rect { NSLog(@"DrawRect"); } - (void)mouseDragged:(NSEvent *)aEvent { NSPoint localPoint = [self convertPoint:[aEvent locationInWindow] fromView:nil]; [self dragImage:[NSImage imageNamed:@"Move.png"] at:localPoint offset:NSZeroSize event:aEvent pasteboard:nil source:self slideBack:NO]; } - (BOOL)prepareForDragOperation:(id < NSDraggingInfo >)sender { return YES; } - (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender { return NSDragOperationEvery; } - (NSDragOperation)draggingUpdated:(id <NSDraggingInfo>)sender { [self setNeedsDisplay:YES]; return NSDragOperationEvery; } - (NSDragOperation)draggingSourceOperationMaskForLocal:(BOOL)isLocal { return NSDragOperationEvery; } - (void)mouseDown:(NSEvent *)theEvent { } @end @implementation CollectionViewAppDelegate @synthesize window, collectionContent, collectionView; - (void)applicationDidFinishLaunching:(NSNotification *)aNotification { NSMutableArray *data = [[NSMutableArray alloc] init]; /* Fill in data */ [self setCollectionContent:data]; [data release]; } /* dealloc */ /* KVC implementation */ @end @implementation ItemModel @synthesize name; /* dealloc */ @end

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  • Poco SocketReactors for a Proxy Server

    - by Genesis
    Can anyone give me some idea of the best way to implement a non-blocking proxy server using a Poco Socket Reactor? Currently I have a blocking implementation where if a readable notification arrives from the client I am writing what is read directly to the server, and if a readable notification arrives from the server I am writing what is read directly to the client. To achieve this I keep the thread that initiated the server connection alive but I would prefer to switch to non-blocking and have any threads which are used to initiate a connection removed once the server and client sockets are registered with the reactor and the SOCKS5 handshake is over. With a SocketReactor one can register event handlers for a single socket but the trouble is I would need to store whatever is read from that socket in a global buffer until the corresponding server socket is ready to be written to as from my testing I dont seem to be able to just write directly to the server when client data arrives. I am thinking of using a struct that contains the client socket, server socket, client buffer and server buffer and whenever a writable notification comes along for either the client or server, finding the corresponding buffer and writing this. Any thoughts?

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  • GXT LayoutContainer with scrollbar reports a client height value which includes the area below the s

    - by Pieter Breed
    I have this code which sets up a "main" container into which other modules of the application will go. LayoutContainer c = new LayoutContainer(); c.setScrollMode(Scroll.ALWAYS); parentContainer.add(c, <...>); Then later on, I have the following as an event handler pContainer = c; // pContainer is actually a parameter, but it has c's value pContainer.removeAll(); pContainer.setLayout(new FitLayout()); LayoutContainer wrapperContainer = new LayoutContainer(); wrapperContainer.setLayout(new BorderLayout()); wrapperContainer.setBorders(false); pContainer.add(wrapperContainer); LayoutContainer west = pWestContentContainer; BorderLayoutData westLayoutData = new BorderLayoutData(LayoutRegion.WEST); westLayoutData.setSize(pWidth); westLayoutData.setSplit(true); wrapperContainer.add(west, westLayoutData); LayoutContainer center = new LayoutContainer(); wrapperContainer.add(center, new BorderLayoutData(LayoutRegion.CENTER)); pCallback.withSplitContainer(center); pContainer.layout(); So in effect, the container called 'west' here will be where the module's UI gets displayed. That module UI then does a simple rowlayout with two children. The botton child has RowData(1, 1) so it fills up all the available space. My problem is that the c (parent) container reports a height and width value which includes the value underneath the scrollbars. What I would like is that the scrollbars show all the space excluding their own space. This is a screenshot showing what I mean:

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  • Symfony forms question (restoring selected value of a dynamically populated sfWidgetFormSelect widge

    - by Stick it to THE MAN
    I am using Symfony 1.3.2 with Propel ORM on Ubuntu 9.10. I have developed a form that dynamically populates a select widget with cities in a selected country, using AJAX. Before the data entered on the form is saved, I validate the form. If validation fails, the form is presented back to the user for correction. However, because the country list is dynamically generated, the form that is presented for correction does not have a valid city selected (it is empty, since the country widget has not changed yet). This is inconvenient for the user, because it means they have to select ANOTHER country (so the change event is fired), and then change back to the original country they selected, then FINALLY select the city which they had last selected. All of this is forced on the user because another (possibly unrelated) field did not vaildate. I tried $form-getValue('widget_name'), called immediately after $form-bind(), but it seems (infact, IIRC, if form fails to validate, all the values are reset to null) - so that does not work. I am currently trying a nasty hack which involves the use of directly accesing the input (i.e. tainted) data via $_POST, and setting them into a flash variable - but I feel its a very nasty hack) What I'm trying to do is a common use case scenario - is there a better way to do this, than hacking around with $_POST etc?

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  • Why updatepanel triggers another updatepanel?

    - by HasanGursoy
    I have two update panels at my ajax page. This is first time I'm using updatepanel and I don't know what is wrong. I think only btnFilter's Click event must trigger the second update panel's content but changing combo values (which also hides/unhides btnFilter button) makes second updatepanel change content (at least I see transferred data with firebug & second updatepanel blinks sometimes). Online here. <asp:UpdatePanel ID="upComparison" runat="server"> <ContentTemplate> Brand: <asp:DropDownList ID="ddlBrands" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddlBrands_SelectedIndexChanged" AppendDataBoundItems="true"> <asp:ListItem Value="" Text="Please select a brand..." /> </asp:DropDownList> <asp:Panel ID="pModels" runat="server" Visible="false"> Model: <asp:DropDownList ID="ddlModels" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddlModels_SelectedIndexChanged" /> </asp:Panel> <asp:Panel ID="pButton" runat="server" Visible="false"> <asp:UpdateProgress ID="upMain" runat="server" DisplayAfter="100"> <ProgressTemplate><img src="/Assets/Images/loader.gif" /> </ProgressTemplate> </asp:UpdateProgress> <asp:Button ID="btnFilter" runat="server" Text="Filter" OnClick="btnFilter_Click" /> </asp:Panel> </ContentTemplate> </asp:UpdatePanel> <asp:UpdatePanel ID="upList" runat="server"> <ContentTemplate> <asp:Repeater ID="rProducts" runat="server"> <ItemTemplate>some code here</ItemTemplate> </asp:Repeater> </ContentTemplate> <Triggers> <asp:AsyncPostBackTrigger ControlID="btnFilter" EventName="Click" /> </Triggers> </asp:UpdatePanel>

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  • AS3 "Loader" progress immediately goes to 100%

    - by Bart van Heukelom
    If you go to http://moederdagontbijtplacemat.nl/ you will see a progress bar. The application is loading a fairly large SWF from the server using the Loader class. Strangely enough, the progress bar immediately goes to 100% (but the loading still takes a while after that). The code is below, but you'll see it's basically too simple to break. It has worked when the application was on a different server, so I though maybe the new server wasn't sending the size of the large SWF in the http headers. Firebug does show a progress bar though, so that is not the case, the information should be available. It also works when I run the loader swf locally and change the URL (new URLRequest("Placemat.swf")) to the absolute URL of Placemat.swf on the server. var l:Loader = new Loader(); addChild(l); l.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, function(e:ProgressEvent) { s.setProgress(e.bytesLoaded/e.bytesTotal); trace(Math.round(100 * e.bytesLoaded/e.bytesTotal), "%"); }); l.contentLoaderInfo.addEventListener(Event.COMPLETE, function() { removeChild(s); }); l.load(new URLRequest("Placemat.swf"));

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  • How do I store more information in a marker?

    - by Sebastian
    Hello, I'm using Google Maps v3 and I build in the server side a json collection of location data. So when I receive that, I iterate through that collection and create a marker object for each and every one of them. For each of these markers, I bind them with the click event, so when the user clicks on a marker in the map, it displays an infoWindow with data related to the associated location. I have an array to store all the location got from the server that holds the retrieved json objects and their corresponding marker. The problem is that, even when I have an array that I can reference or iterate through, I need to not only get the marker object when the user clicks on them, but also the location object, that stores more information. I tried to mantain this array of objects and reference it from the calling object without success, because the function is called by the marker and not the location object. So I thought if it's possible to store more information in the google maps marker object like using a general purpose field. Please let me know if more information is needed. Thanks!

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  • How to call PopOver Controller from UITableViewCell.accessoryView?

    - by Vic
    Hi, First I would like to say that I'm really new to ipad/ipod/iphone development, and to objective-c too. With that being said, I'm trying to develop a small application targeting the iPad, using Xcode and IB, basically, I have a table, for each UITableViewCell in the table, I added to the accessoryView a button that contains an image. Here is the code: UIImage *img = [UIImage imageNamed:@"myimage.png"]; UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; CGRect frame = CGRectMake(0.0, 0.0, img.size.width, img.size.height); button.frame = frame; // match the button's size with the image size [button setBackgroundImage:img forState:UIControlStateNormal]; // set the button's target to this table view controller so we can interpret touch events and map that to a NSIndexSet [button addTarget:self action:@selector(checkButtonTapped:event:) forControlEvents:UIControlEventTouchUpInside]; button.backgroundColor = [UIColor clearColor]; cell.accessoryView = button; So far, so good, now the problem is that I want a PopOver control to appear when a user taps the button on the accessoryView of a cell. I tried this on the "accessoryButtonTappedForRowWithIndexPath" of the tableView: UITableViewCell *cell = [myTable cellForRowAtIndexPath:indexPath]; UIButton *button = (UIButton *)cell.accessoryView; //customViewController is the controller of the view that I want to be displayed by the PopOver controller customViewController = [[CustomViewController alloc]init]; popOverController = [[UIPopoverController alloc] initWithContentViewController: customViewController]; popOverController.popoverContentSize = CGSizeMake(147, 122); CGRect rect = button.frame; [popOverController presentPopoverFromRect:rect inView:cell.accessoryView permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES]; The problem with this code is that it shows the Popover at the top of the application View, while debugging I saw the values of "rect" and they are: x = 267 y = 13 so I think it is pretty obvious why the PopOver is being displayed so up on the view, so my question is, how can I get the correct values for the PopOver to appear just below the button on the accessoryView of the cell? Also, as you can see, I'm telling it to use the "cell.accessoryView" for the "inView:" attribute, is that okay?

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  • Invoking brill tagger through C#

    - by Toshal Mokadam
    We want to use brill tagger such that on a button click, it will tag the Input.txt into output.txt. So we have created a new visual studio project and put a button. On button click event we wrote the following code. There are no errors and we can see the command prompt getting invoked. But the output file is not getting created. The code is as follows. could you pls guide us?? private void button1_Click(object sender, EventArgs e) { ProcessStartInfo brillStartInfo = new ProcessStartInfo(@"C:\Users\toshal\Documents\Visual Studio 2008\Projects\brill tagger\bin\brill.exe"); brillStartInfo.Arguments = "/C brill.exe LEXICON.BROWN Input.txt BIGRAMS LEXICALRULEFILE.BROWN CONTEXTUALRULEFILE.BROWN > output.txt"; brillStartInfo.UseShellExecute = false; brillStartInfo.RedirectStandardOutput = true; brillStartInfo.RedirectStandardError = true; brillStartInfo.CreateNoWindow = false; Process brill = new Process(); brill.StartInfo = brillStartInfo; brill.Start(); string output = brill.StandardOutput.ReadToEnd(); brill.WaitForExit(); }

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  • Uploadify - Passing Information Back to The Original Form

    - by CccTrash
    I have an Send.aspx page that has an uploadify control on it. Upload.ashx handles the file upload. I am adding a file record to a sql database in the Upload.ashx file and I need to get the ID of that record back from Upload.aspx when it is done. Can't get it working with Sessions. =( Something to do with an Adobe bug? What would the best way to handle this be? Here is the uploadify control: <script type="text/javascript"> // <![CDATA[ var contestID = $('[id$=HiddenFieldContestID]').val(); var maxEntries = $('[id$=HiddenFieldMaxEntries]').val(); var userID = $('[id$=HiddenFieldUserID]').val(); $(document).ready(function() { $('#fileInput').uploadify({ 'uploader': '../uploadify/uploadify.swf', 'script': '../uploadify/Upload.ashx', 'scriptData': { 'contestID': contestID, 'maxEntries': maxEntries, 'userID': userID }, 'cancelImg': '../uploadify/cancel.png', 'auto': true, 'multi': false, 'fileDesc': 'Image Files', 'fileExt': '*.jpg;*.png;*.jpeg', 'queueSizeLimit': 1, 'sizeLimit': 4000000, 'buttonText': 'Choose Image', 'folder': '/uploads', 'onAllComplete': function(event, queueID, fileObj, response, data) { document.getElementById('<%= ButtonCleanup.ClientID %>').click(); } }); }); // ]]></script> Edit: See Answer below... Video Tutorial from start to finish: http://casonclagg.com/articles/6/video-tutorial-uploadify-asp-net-c-sharp.aspx

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  • Do you have ideas for a workaround for this Known bug in Visual Studio 2010's addIn model ?

    - by Jesper
    When developing AddIns for Visual Studio 2010 the following line fails: CommandBarEvents handler = (EnvDTE.CommandBarEvents)m_VSStudio.DTE.Events.get_CommandBarEvents(popup); Update: Forgot to tell that m_VSStudio is of the type DTE2 Where popup is of the type CommandBarPopup (for the type CommandBarControl it works though) The line fails with this Exception: System.Runtime.InteropServices.COMException (0x80020003): Member not found. (Exception from HRESULT: 0x80020003 (DISP_E_MEMBERNOTFOUND)) The exact same line worked in Visual Studio 2008. The purpose of the line is to get a handler which handles clickevents, when one clicks the Popup. After som searching I found this link: http://connect.microsoft.com/VisualStudio/feedback/details/524335/events-get-commandbarevents-exception-on-submenus-reproducible-bug-addin Which basicly states that it is a known bug, which will not be fixed, because there is a workaround. But unfortunately it does not state the workaround :( I would be extremely pleased if anybody has a great idea for a workaround ? The reason why I want to listen to the click events is because I want to show or hide the submenuitems (CommandBarControl) given some condition, when one clicks a menu (CommandBarPopup). So a workaround that uses something else than the click event would also be appreciated.

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  • jqgrid not updating data on reload

    - by meepmeep
    I have a jqgrid with data loading from an xml stream (handled by django 1.1.1): jQuery(document).ready(function(){ jQuery("#list").jqGrid({ url:'/downtime/list_xml/', datatype: 'xml', mtype: 'GET', postData:{site:1,date_start:document.getElementById('datepicker_start').value,date_end:document.getElementById('datepicker_end').value}, colNames:[...], colModel :[...], pager: '#pager', rowNum: 25, rowList:[10,25,50], viewrecords: true, height: 500, caption: 'Click on column headers to reorder' }); $("#grid_reload").click(function(){ $("#list").trigger("reloadGrid"); }); $("#tabs").tabs(); $("#datepicker_start").datepicker({dateFormat: 'yy-mm-dd'}); $("#datepicker_end").datepicker({dateFormat: 'yy-mm-dd'}); ... And the html elements: <th>Start Date:</th> <td><input id="datepicker_start" type="text" value="2009-12-01"></input></td> <th>End Date:</th> <td><input id="datepicker_end" type="text" value="2009-12-03"></input></td> <td><input id="grid_reload" type="submit" value="load" /></td> When I click the grid_reload button, the grid reloads, but when it has done so it shows exactly the same data as before, even though the xml is tested to return different data for different timestamps. I have checked using alert(document.getElementById('datepicker_start').value) that the values in the date inputs are passed correctly when the reload event is triggered. Any ideas why the data doesn't update? A caching or browser issue perhaps?

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  • How do you use asynchronous ORMs without huge callback chains?

    - by hornairs
    I'm using the relatively immature Joose Javascript ORM plugin (project page) to persist objects in an Appcelerator Titanium (company page) mobile project. Since it's client side storage, the application has to check to see if the database is initialized before starting up the ORM since it inspects the DB tables to construct the classes. My problem is that this sequence of operations (and if this one is like this, other things down the road) takes a lot of callbacks to complete. I have a lot of jumping around in the code that isn't apparent to a maintainer and results in some complex call graphs and whatnot. So, I ask these questions: How would you asynchronously initialize a database and populate it with seed data using an ORM that needs the schema to be correct to function? Do you have any general strategies or links for async/event driven programming and keeping the call graph simple and understandable? Do you have any suggestions for Javascript ORMs/meta object systems that work with HTML 5 as a storage engine and are hopefully framework agnostic? Am I just a big newb and should be able to work this out with ease? Thanks folks!

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  • Knopflerfish packaging

    - by Jens
    Hello, I am at the moment creating a matrix which is showing how far Knopflerfish, Equinox and Felix are OSGi 4.2 compliant. So far I looked at the Knopflerfish documentation (Link 1, Link 2) to get an idea of how much of the Core and Compendium specs are actually implemented. The core specification seems to be fully implemented, although there are some inconsistent statements about the Security Layer and the Declarative Services. What makes me wonder is how much of all the Compendium specs are implemented: Remote Services Log Service Http Service Device Access Configuration Admin Service Metatype Service Preferences Service User Admin Service Wire Admin Service IO Connector Service Initial Provisioning UPnP Device Service Declarative Services Event Admin Service Deployment Admin Auto Configuration Application Admin DMT Admin Service Monitor Admin Service Foreign Application Access Blueprint Container Tracker XML Parser Service Position Measurement and State Execution Environment To find out more I downloaded (Download page) the source code of Knopflerfish and had a look at it. It looks like some parts of the spec are implemented through the "original" framework provided by the OSGi Alliance (org.osgi.*). One example is the UPnP package: Does this mean that missing parts which are not directly implemented by Knopflerfish are added through the "original" OSGi framework? And does this also apply to other frameworks like Felix or Equinox?

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  • [jQuery] Trouble loading tooltips on all images displayed inside Colorbox

    - by adaneko
    I would like to load a tooltip plugin (I'm currently trying qTip, but I've tried a few and have run into the same problem each time) inside Colorbox (http://colorpowered.com/colorbox/). Colorbox dynamically loads this code to display the images you want to show in it: <div id="cboxLoadedContent" style="display: block; width: 400px; overflow: auto; height: 498px;"> <img src="image.jpg" id="cboxPhoto" style="margin: 49px auto auto; border: medium none; display: block; float: none; cursor: pointer;"> </div> Using Colorbox's event hooks, I am currently calling my tooltip plugin on onComplete, but this only applies the tooltip to the first image in the group. If you go to the next image, the tooltip needs to be recalled as Colorbox regenerates the code displayed above. What is the best way to recall the tooltip plugin? I have tried to recall the tooltip by attaching it to clicking on the div with the id "cboxNext" as a test, but it doesn't work since it takes time for cboxPhoto to load, so I think the functions generating the tooltip load before they can apply to the image.

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  • MissingMethodException when running application on different computer

    - by Codesleuth
    I have a problem where I compiled my application on Visual Studio 2010 while targetting the .NET Framework 3.5, deployed it to a client server, only to find it gives me the following error: ************** Exception Text ************** System.MissingMethodException: Method not found: 'Void System.Xml.Xsl.XslCompiledTransform.Transform( System.Xml.XPath.IXPathNavigable, System.Xml.Xsl.XsltArgumentList, System.Xml.XmlWriter, System.Xml.XmlResolver)'. ************** Loaded Assemblies ************** [...] System.Xml Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.3082 (QFE.050727-3000) CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll The method it says it's looking for is this: XslTransform.Transform Method (IXPathNavigable, XsltArgumentList, XmlWriter, XmlResolver) (Supported in: 4, 3.5, 3.0, 2.0, 1.1) I've tried setting up a redirect to the .NET Framework 4.0 version of the same DLL using the assemblyBinding element like so: <runtime> <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> <dependentAssembly> <assemblyIdentity name="System.Xml" publicKeyToken="b77a5c561934e089" culture="neutral" /> <bindingRedirect oldVersion="2.0.0.0" newVersion="4.0.0.0"/> <codeBase version="4.0.0.0" href="file:///C:/WINDOWS/Microsoft.NET/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll" /> </dependentAssembly> </assemblyBinding> </runtime> But now the application won't run, and puts this in the event log: EventType clr20r3, P1 myapplication.exe, P2 3.85.12.27583, P3 4be9757f, P4 system.configuration, P5 2.0.0.0, P6 4889de74, P7 1a6, P8 136, P9 ioibmurhynrxkw0zxkyrvfn0boyyufow, P10 NIL. So, in summary, (1) does anyone know why the application can't find the method listed, and (2) why doesn't it let me redirect to the .NET 4.0 version of System.Xml? Any help is appreciated, I'm totally stuck!

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