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  • Creating child within xml file.

    - by Kaloyan
    Hey, guys. I want to ask if someone can give me an example of creating child through xml. I mean creating custom components through xml (for every xml tag you create your own custom component and then add it as a child to the stage). I hope is it clear enough... :)

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  • How to update QStandartItemModel without freezing the main UI

    - by user1044002
    I'm starting to learn PyQt4 and have been stuck on something for a long time now and can't figure it out myself: Here is the concept: There is a TreeView with custom QStandartItemModel, which gets rebuild every couple of seconds, and can have a lot (hundreds at least) of entries, there also will be additional delegates for the different columns etc. It's fairly complex and the building time for even plain model, without delegates, goes up to .3 sec, which makes the TreeView to freeze. Please advice me for the best approach on solving this. I was thing of somehow building the model in different thread, and eventually sending it to the TreeView, where it would just perform setModel() with the new one, but couldn't make that work. here is some code that may illustrate the problem a bit: from PyQt4.QtCore import * from PyQt4.QtGui import * import sys, os, re, time app = QApplication(sys.argv) REFRESH = 1 class Reloader_Thread(QThread): def __init__(self, parent = None): QThread.__init__(self, parent) self.loaders = ['\\', '--', '|', '/', '--'] self.emit(SIGNAL('refresh')) def run(self): format = '|%d/%b/%Y %H:%M:%S| ' while True: self.emit(SIGNAL('refresh')) self.sleep(REFRESH) class Model(QStandardItemModel): def __init__(self, viewer=None): QStandardItemModel.__init__(self,None) self.build() def build(self): stTime = time.clock() newRows = [] for r in range(1000): row = [] for c in range(12): item = QStandardItem('%s %02d%02d' % (time.strftime('%H"%M\'%S'), r,c)) row.append(item) newRows.append(row) eTime = time.clock() - stTime outStr = 'Build %03f' % eTime format = '|%d/%b/%Y %H:%M:%S| ' stTime = time.clock() self.beginRemoveRows(QModelIndex(), 0, self.rowCount()) self.removeRows(0, self.rowCount()) self.endRemoveRows() eTime = time.clock() - stTime outStr += ', Remove %03f' % eTime stTime = time.clock() numNew = len(newRows) for r in range(numNew): self.appendRow(newRows[r]) eTime = time.clock() - stTime outStr += ', Set %03f' % eTime self.emit(SIGNAL('status'), outStr) self.reset() w = QWidget() w.setGeometry(200,200,800,600) hb = QVBoxLayout(w) tv = QTreeView() tvm = Model(tv) tv.setModel(tvm) sb = QStatusBar() reloader = Reloader_Thread() tvm.connect(tvm, SIGNAL('status'), sb.showMessage) reloader.connect(reloader, SIGNAL('refresh'), tvm.build) reloader.start() hb.addWidget(tv) hb.addWidget(sb) w.show() app.setStyle('plastique') app.processEvents(QEventLoop.AllEvents) app.aboutToQuit.connect(reloader.quit) app.exec_()

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  • ANTLR and c# - where to start?

    - by mehanicar
    I want to integrate ANTLR with my c# desktop application. I could not find many articles that talk about integration of ANTLR wirh C#. Can you recommend a book that explains it step by step through real world examples?

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  • Sharepoint how to get a list of Sharepoint specific fields/columns

    - by BeraCim
    Hi all: I have a list of fields/columns that comprises of Sharepoint specific fields/columns, my own custom fields/columns, and a bunch of custom fields/columns created by someone else (which I dont know what they are yet). My goal is to get the list of the fields/columnns created by that someone else. My first hurdle lies in how to tell which ones are from Sharepoint. So I was wondering is there any way to programmatically retrieve a list of Sharepoint Specific fields/columns? Thanks.

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  • How to change colors for ListView, alternating row color?

    - by Gerry
    I have a couple of list views, one uses TextViews laid out with xml, the other uses a custom class derived from View. The default halloween color scheme is pretty ugly. How can I change the background and selection colors for the list elements. Ideally, I'd like to be able to do this in code not xml, to handle the custom view. Thanks, Gerry

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  • white in the black

    - by gcc
    how can i detect white image surrounded by black image take input 000 000 000 000 000 255 255 255 000 000 255 255 255 000 000 255 255 255 000 000 000 000 000 000 000 make it simpliest form 0 0 0 0 0 2 2 2 0 0 2 2 2 0 0 2 2 2 0 0 that step i couldnot did then search for coordinate of leading entry x,y then determine are there any detection if not print no detection else go another step find length of the square and how can calculate length and widht of the square

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  • How to improve Java performance on Informix for Windows

    - by Michal Niklas
    I have problem with performance of Java UDR functions on Informix on Windows. On this server I already have some functions in C and SPL. I chose one function to write it in those 3 languages and I measured performance of this function on test table. Function calculates some kind of checksum so it does not use any db libraries etc. only string and math operations. I observed performance on 30k records with SQL like: select function(txt) from _tmp_perf_test and I changed function to 'function_c, function_spl or function_java. My performance tests showed that C function is the fastest, SPL function is about 5 times slower, where Java is 100 (one hundred!) times slower than C. I checked it few times and 1:100 ratio didn't improve. I changed Java function to simply return length of the string but even this do not help so it looks, that there is general problem with Java function invocation, because there was no difference in time between Java function that calculate checksum and Java function that returns length of the string. I increased JVM_MAX_HEAP_SIZE to 128 and it not helped too. I use IBM Informix Dynamic Server Version 11.50.TC6DE. The same test on Linux server: IBM Informix Dynamic Server Version 11.50.FC6 show more "normal" results, i.e. Java is slower from C and SPL but only 2 to 5 times. What can I do to improve Java performance on Informix server on Windows? More info about Java on servers: c:\Informix\extend\krakatoa\jre\bin>java -version java version "1.5.0" Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20081129a (SR9-0 )) IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows Server 2003 x86-32 j9vmwi3223-20081129 (JIT enabled) J9VM - 20081126_26240_lHdSMr JIT - 20081112_1511ifx1_r8 GC - 200811_07) JCL - 20081129 [root@informix11 bin]# ./java -version java version "1.5.0" Java(TM) 2 Runtime Environment, Standard Edition (build pxa64devifx-20071025 (SR6b)) IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Linux amd64-64 j9vmxa6423-20071005 (JIT enabled) J9VM - 20071004_14218_LHdSMr JIT - 20070820_1846ifx1_r8 GC - 200708_10) JCL - 20071025

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  • Add property to an ASP.NET MVC 2 ViewUserControl

    - by roosteronacid
    I have created a ViewUserControl in my ASP.NET MVC 2 project. This ViewUserControl serves as the general page-header for all views in the project. How can I add a custom property on ViewUserControls, accessible from views using that control?..: <%@ Register Src="../Shared/Header.ascx" TagName="Header" TagPrefix="uc" %> <uc:Header runat="server" ID="ucHeader" MenuItemHighlighted="Menuitem.FrontPage" /> <!-- custom property, here -->

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  • Strange behavior using getchar() and -O3

    - by Eduardo
    I have these two functions void set_dram_channel_width(int channel_width){ printf("one\n"); getchar(); } void set_dram_transaction_granularity(int cacheline_size){ printf("two\n"); getchar(); } //output: one f //my keyboard input two one f //keyboard input two one f //keyboard input //No more calls Then I change the functions to: void set_dram_channel_width(int channel_width){ printf("one\n"); } void set_dram_transaction_granularity(int cacheline_size){ printf("two\n"); getchar(); } //output one two f //keyboard input //No more calls Both functions are called by an external code, the code for both programs is the same, just changing the getchar() I get those two different outputs. Is this possible or there is something that is really wrong in my code? Thanks This is the output I get with GDB** For the first code (gdb) break mem-dram.c:374 Breakpoint 1 at 0x71c810: file build/ALPHA_FS/mem/dramsim/mem-dram.c, line 374. (gdb) break mem-dram.c:381 Breakpoint 2 at 0x71c7b0: file build/ALPHA_FS/mem/dramsim/mem-dram.c, line 381. (gdb) run -d ./tmp/MyBench2/ one f [Switching to Thread 47368811512112 (LWP 17507)] Breakpoint 1, set_dram_channel_width (channel_width=64) (gdb) c Continuing. two one f Breakpoint 2, set_dram_transaction_granularity (cacheline_size=64) (gdb) c Continuing. Breakpoint 1, set_dram_channel_width (channel_width=8) 374 void set_dram_channel_width(int channel_width){ (gdb) c Continuing. two one f For the second code (gdb) break mem-dram.c:374 Breakpoint 1 at 0x71c7b6: file build/ALPHA_FS/mem/dramsim/mem-dram.c, line 374. (gdb) break mem-dram.c:380 Breakpoint 2 at 0x71c7f0: file build/ALPHA_FS/mem/dramsim/mem-dram.c, line 380. (gdb) run one two f [Switching to Thread 46985688772912 (LWP 17801)] Breakpoint 1, set_dram_channel_width (channel_width=64) (gdb) c Continuing. Breakpoint 2, set_dram_transaction_granularity (cacheline_size=64) (gdb) c Continuing. Breakpoint 1, set_dram_channel_width (channel_width=8) (gdb) c Continuing.

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  • How do i jump to a breakpoint within gdb?

    - by Chris Smullian
    Hey folks! I'm new to gdb and I tried out the following: I set a breakpoint, which worked fine actually, but is there any possibility to jump immediately to that breakpoint without using "next" or "step". Using "next" or "step" takes really long to get to the final breakpoint. I wasn't able to find a faster way. Any help is preciated! regards chris smullian

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  • Serializing WPF RichTextBox to XAML vs RTF

    - by chaiguy
    I have a RichTextBox and need to serialize its content to my database purely for storage purposes. It would appear that I have a choice between serializing as XAML or as RTF, and am wondering if there are any advantages to serializing to XAML over RTF, which I would consider as more "standard". In particular, am I losing any capability by serializing to RTF instead of XAML? I understand XAML supports custom classes inside the FlowDocument, but I'm not currently using any custom classes (though the potential for extensibility might be enough reason to use XAML).

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  • Serializing WPF RichTextBox to XAML vs RTF

    - by chaiguy
    I have a RichTextBox and need to serialize its content to my database purely for storage purposes. It would appear that I have a choice between serializing as XAML or as RTF, and am wondering if there are any advantages to serializing to XAML over RTF, which I would consider as more "standard". In particular, am I losing any capability by serializing to RTF instead of XAML? I understand XAML supports custom classes inside the FlowDocument, but I'm not currently using any custom classes (though the potential for extensibility might be enough reason to use XAML).

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  • Endian check in C

    - by webgenius
    Got this code snippet from some website: int num = 1; if(*(char *)&num == 1) { printf("\nLittle-Endian\n"); } else { printf("Big-Endian\n"); } Can anyone explain this step-by-step? &num - Adress of a (char *)&num - Type-cast address of a into a string *(char *)&num - Points to the first character of the string Am I missing anything here?

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  • Web application

    - by Baz
    hi guys, its my first web application in real world and am very much confuse from the beginning am working on Merchandise suppliers application, which includes various type of products. for an instance Home products cloths men t-shirts add basket send information to my client, I don’t need to add PayPal , just need to send information to my client , So far I have done , analysis , site structure , page designing am confuse about database designing Can any one help me out or send me some example step by step how should I begin with it .

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  • Simplify a batch of git commands

    - by Bogdan Gusiev
    When I want to merge one branch to another I use to do the following(in this example master to custom): git checkout master && git pull && git checkout custom && git merge master Can somebody suggest how to simplify this? Thanks, Bogdan.

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  • Node.js/ v8: How to make my own snapshot to accelerate startup

    - by Anand
    I have a node.js (v0.6.12) application that starts by evaluating a Javascript file, startup.js. It takes a long time to evaluate startup.js, and I'd like to 'bake it in' to a custom build of Node if possible. The v8 source directory distributed with Node, node/deps/v8/src, contains a SconScript that can almost be used to do this. On line 302, we have LIBRARY_FILES = ''' runtime.js v8natives.js array.js string.js uri.js math.js messages.js apinatives.js date.js regexp.js json.js liveedit-debugger.js mirror-debugger.js debug-debugger.js '''.split() Those javascript files are present in the same directory. Something in the build process apparently evaluates them, takes a snapshot of state, and saves it as a byte string in node/out/Release/obj/release/snapshot.cc (on Mac OS). Some customization of the startup snapshot is possible by altering the SconScript. For example, I can change the definition of the builtin Date.toString by altering date.js. I can even add new global variables by adding startup.js to the list of library files, with contents global.test = 1. However, I can't put just any javascript code in startup.js. If it contains Date.toString = 1;, an error results even though the code is valid at the node repl: Build failed: -> task failed (err #2): {task: libv8.a SConstruct -> libv8.a} make: *** [program] Error 1 And it obviously can't make use of code that depends on libraries Node adds to v8. global.underscore = require('underscore'); causes the same error. I'd ideally like a tool, customSnapshot, where customSnapshot startup.js evaluates startup.js with node and then dumps a snapshot to a file, snapshot.cc, which I can put into the node source directory. I can then build node and tell it not to rebuild the snapshot.

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  • Generating video or images of geometrical objects from data

    - by Jonathan Barbero
    Hello, I'm working in a course's project to predict the velocity and position of the solar system planets (and other objects). It will be really cool if I can visualize the predicted objects data, if it's possible generating 3D images, if in video that's amazing. Do you know any library that lets me to use this data to generate an image or video? (I don't care in which language) Data: - simulation step (time line step for a video) - positions of the objects - radius and/or colours of the objects Thanks in advance, any suggestion is welcome.

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  • How can i install sun java to Fedora 8

    - by Tushar Ahirrao
    Hi I want to install java on my fedora 8 server but come to the step 9 that is mention in http://fedorasolved.org/browser-solutions/java-i386 but at the step 10 when i enter the command ln -s /opt/jre1.6.0_18/plugin/i386/ns7/libjavaplugin_oji.so /usr/lib/mozilla/plugins/libjavaplugin_oji.so it gives following error ln -s /opt/jre1.6.0_18/plugin/i386/ns7/libjavaplugin_oji.so /usr/lib/mozilla/plugins/libjavaplugin_oji.so ln: creating symbolic link `/usr/lib/mozilla/plugins/libjavaplugin_oji.so': No such file or directory can you help me please?

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  • How to create package for .deb file

    - by Sunil Kumar Sahoo
    Hi I have created .rpm packages successfully for fedora FC10 linux. I can cretae .rpm file of my application similarly I want to create .deb file of my application. I want step-by-step approach to create debian packager. Please help me to create .deb file for my application I am using ubuntu linux to create packager Thanks Sunil Kumar Sahoo

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  • Debugging site written mainly in JScript with AJAX code injection

    - by blumidoo
    Hello, I have a legacy code to maintain and while trying to understand the logic behind the code, I have run into lots of annoying issues. The application is written mainly in Java Script, with extensive usage of jQuery + different plugins, especially Accordion. It creates a wizard-like flow, where client code for the next step is downloaded in the background by injecting a result of a remote AJAX request. It also uses callbacks a lot and pretty complicated "by convention" programming style (lots of events handlers are created on the fly based on certain object names - e.g. current page name, current step name). Adding to that, the code is very messy and there is no obvious inner structure - the functions are scattered in the code, file names do not reflect the business role of the code, lots of functions and code snippets are most likely not used at all etc. PROBLEM: How to approach this code base, so that the inner flow of the code can be sort-of "reverse engineered" using a suite of smart debugging tools. Ideally, I would like to be able to attach to the running application and step through the code, breaking on each new function call. Also, it would be nice to be able to create a "diagram of calls" in the application (i.e. in order to run a particular page logic, this particular flow of function calls was executed in a particular order). Not to mention to be able to run a coverage analysis, identifying potentially orphaned code fragments. I would like to stress out once more, that it is impossible to understand the inner logic of the application just by looking at the code itself, unless you have LOTS of spare time and beer crates, which I unfortunately do not have :/ (shame...) An IDE of some sort that would aid in extending that code would be also great, but I am currently looking into possibility to use Visual Studio 2010 to do the job, as the site itself is a mix of Classic ASP and ASP.NET (I'd say - 70% Java Script with jQuery, 30% ASP). I have obviously tried FireBug, but I was unable to find a way to define a breakpoint or step into the code, which is "injected" into the client JS using AJAX calls (i.e. the application retrieves the code by invoking an URL and injects it to the client local code). Venkman debugger had similar issues. Any hints would be welcome. Feel free to ask additional questions.

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  • How to make a Multilanguage website in php and Mysql

    - by user295239
    Hello to All Group Members. Can any body tell me how i make a dynamic multilanguage website in php and mysql.I have no idea abt it.I search on google and do not find good solution. Any one tell me step by step guide if possible made a demo for multilanguage website. Or please refer me any link where tell the detail abt it.How i do it. Thanks in Advance. Highly Appreciated. Best Regard Hasnat

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  • How do you 'clone' WebControls in C# .NET ?

    - by Adz
    My basic question is, in .NET, how do I clone WebControls? I would like to build a custom tag, which can produce multiple copies of its children. Ultimately I intend to build a tag similar to in JSP/Struts. But the first hurdle I have is the ability to duplicate/clone the contents of a control. Consider this rather contrived example; <custom:duplicate count="2"> <div> <p>Some html</p> <asp:TextBox id="tb1" runat="server" /> </div> </custom:duplicate> The HTML markup which is output would be something like, <div> <p>Some html</p> <input type="text" id="tb1" /> </div> <div> <p>Some html</p> <input type="text" id="tb1" /> </div> Note: I know i have the id duplicated, I can come up with a solution to that later! So what we would have is my custom control with 3 children (I think) - a literal control, a TextBox control, and another literal control. In this example I have said 'count=2' so what the control should do is output/render its children twice. What I would hope to do is write some "OnInit" code which does something like: List<WebControl> clones; for(int i=1; i<count; i++) { foreach(WebControl c in Controls) { WebControl clone = c.Clone(); clones.Add(clone); } } Controls.AddRange(clones); However, as far as I can tell, WebControls do not implement ICloneable, so its not possible to clone them in this way. Any ideas how I can clone WebControls?

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  • Get Attribute value in ViewEngine ASP.NET MVC 3

    - by Kushan Fernando
    I'm writting my own view engine. public class MyViewEngine : RazorViewEngine { public override ViewEngineResult FindView(ControllerContext controllerContext, string viewName, string masterName, bool useCache) { // Here, how do I get attributes defined on top of the Action ? } } ASP.NET MVC Custom Attributes within Custom View Engine Above SO Question has how to get attributes defined on top of the Controller. But I need to get attributes defined on Action.

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