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  • Device Driver IRQL and Thread/Context Switches

    - by Christian Hoglund
    Hi, I'm new to Windows device driver programming. I know that certain operations can only be performed at IRQL PASSIVE_LEVEL. For example, Microsoft have this sample code of how to write to a file from a kernel driver: if (KeGetCurrentIrql() != PASSIVE_LEVEL) return STATUS_INVALID_DEVICE_STATE; Status = ZwCreateFile(...); My question is this: What is preventing the IRQL from being raised after the KeGetCurrentIrql() check above? Say a context or thread swithch occurs, couldn't the IRQL suddenly be DISPATCH_LEVEL when it gets back to my driver which would then result in a system crash? If this is NOT possible then why not just check the IRQL in the DriverEntry function and be done with it once for all?

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  • ASP.NET MVC2 RC : How to intercept or trigger client-side validation before ajax request?

    - by jacko
    I have a username textbox on a form, that has a few validation rules applied to it via the DataAnnotation attributes: [Required(ErrorMessage = "FTP login is required")] [StringLength(15, ErrorMessage = "Must be 15 characters or fewer")] [RegularExpression(@"[a-zA-Z0-9]*", ErrorMessage = "Alpha-numeric characters only")] public string FtpLogin { get; set; } I also have a button next to this text box, that fires off a jQuery ajax request that checks for the existence of the username as follows: <button onclick="check(this);return false;" id="FtpLoginCheck" name="FtpLoginCheck">Available?</button> I'm looking for a way of tieing the two together, so that the client-side validation is performed before the call to the "check(this)" in the onclick event. Edit: To be more clear, I need a way to inspect or trigger the client-side validation result of the textbox, when I click the unrelated button beside it. Edit: I now have the button JS checking for $("form").validate().invalid, but not displaying the usual validation messages. Almost there Any ideas?

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  • PowerBuilder IDE Customization for SCC

    - by Adam Hawkes
    Our PowerBuilder application is fairly large and has many objects in several PBLs for organizing our code. We often have 10 or more datawindows on one window, and these datawindows may be spread across two or three PBLs. For version control, we use exclusive check-out to avoid merge conflicts. The situation is that when you right-click on a datawindow object from the Window painter you get a context-menu with options like "Script" and "Properties" and "Modify Datawindow...". We'd like to add one for "Check-out..." to avoid having to hunt for the datawindow in several PBLs. Any ideas on how to do this, or something similar, would be greatly appreciated.

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  • Can compressing Program Files save space *and* give a significant boost to SSD performance?

    - by Christopher Galpin
    Considering solid-state disk space is still an expensive resource, compressing large folders has appeal. Thanks to VirtualStore, could Program Files be a case where it might even improve performance? Discovery In particular I have been reading: SSD and NTFS Compression Speed Increase? Does NTFS compression slow SSD/flash performance? Will somebody benchmark whole disk compression (HD,SSD) please? (may have to scroll up) The first link is particularly dreamy, but maybe head a little too far in the clouds. The third link has this sexy semi-log graph (logarithmic scale!). Quote (with notes): Using highly compressable data (IOmeter), you get at most a 30x performance increase [for reads], and at least a 49x performance DECREASE [for writes]. Assuming I interpreted and clarified that sentence correctly, this single user's benchmark has me incredibly interested. Although write performance tanks wretchedly, read performance still soars. It gave me an idea. Idea: VirtualStore It so happens that thanks to sanity saving security features introduced in Windows Vista, write access to certain folders such as Program Files is virtualized for non-administrator processes. Which means, in normal (non-elevated) usage, a program or game's attempt to write data to its install location in Program Files (which is perhaps a poor location) is redirected to %UserProfile%\AppData\Local\VirtualStore, somewhere entirely different. Thus, to my understanding, writes to Program Files should primarily only occur when installing an application. This makes compressing it not only a huge source of space gain, but also a potential candidate for performance gain. Testing The beginning of this post has me a bit timid, it suggests benchmarking NTFS compression on a whole drive is difficult because turning it off "doesn't decompress the objects". However it seems to me the compact command is perfectly capable of doing so for both drives and individual folders. Could it be only marking them for decompression the next time the OS reads from them? I need to find the answer before I begin my own testing.

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  • How to add custom fields in WordPress "Add a New Post" page?

    - by KPL
    Hello awesome people, I want to add a custom field on Add A New Post page. Like - if I am to make a plugin which will post links to Twitter after a new post is made, I would like to give ability to user to select if he wants to tweet that particular post's link to Twitter. I want to display a check box somewhere in the page which says - "Post this on Twitter" and then check for it and make a tweet. I have seen some plugins which do this. But can't remember which they were. Can someone please help me out?

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  • ASP.NET HttpContext.GetLocalResourceObject() throws InvalidOperationException

    - by Dylan Lin
    Hi all, Let's say we have such site structure: App_LocalResources       |- A.aspx.resx       |- B.aspx.resx A.aspx B.aspx Now I use HttpContext.GetLocalResourceObject("~/A.aspx") in A.aspx.cs, and it works fine. But if I use HttpContext.GetLocalResourceObject("~/A.aspx") in B.aspx.cs, it throws an exception: The resource class for this page was not found. Please check if the resource file exists and try again. Exception Details: System.InvalidOperationException: The resource class for this page was not found. Please check if the resource file exists and try again. How can I resolve this problem? I want to read the local resources from an external page, and I don't want to read the .resx file myself. Thanks :-)

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  • Regular expression for Regular expressions?

    - by kavoir.com
    I have an app that enables the user to input a regular expression, my question is how to check against any input of regular expressions and make sure they are valid ones because if they are not there will be preg_match errors. I don't want to use the '@' before preg_match, so if there's a way to check the validity of the user input of regular expressions that'd be great. The regular expression system of PHP seems to be rather too complicated for me to come up with a regular expression for them. Any idea or any alternatives would be possible in achieving this?

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  • nsthread in iphone xcode

    - by BibiBuBu
    Good Day! i want to use nsthreads in a project of xcode that will call a function which is for the network access and will check that if the network is there or not, so i need to have a thread which will execute after lets say 1 minutes to check the connectivity. and will continue run unless the app is closed. [NSThread detachNewThreadSelector:@selector(startTheBackgroundJob) toTarget:self withObject:nil]; startTheBackgroundJob NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; // wait for 3 seconds before starting the thread, you don't have to do that. This is just an example how to stop the NSThread for some time [NSThread sleepForTimeInterval:5]; //[self performSelectorInBackground:@selector(checkNet) withObject:nil]; [self performSelectorOnMainThread:@selector(checkNet) withObject:nil waitUntilDone:YES]; [pool release]; it works only for the first time but not any other, i mean only 1 loop it makes can somebody help me in this regard. Thanks

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  • Eclipse: What is the minimum Eclipse installation needed for a headless PDE build?

    - by Christoph
    Hi, I am currently using PDE build in headless mode to build my OSGI Bundle project. The PDE Antrunner task uses an Eclipse installation and I am just pointing it to my local Eclipse installation. unfortunatelly my eclipse installation is about 260MB big, but I assume that a PDE build does NOT require all of those plugins in a standard eclipse installation. Does anyone now what is the minimum list of plugins I need for doing a headless PDE build? All of my dependencies I actually have in a custom target platform folder, so I guess the only thing I need from my eclipse installation are the dependencies which PDE build actually needs. But what are those? Can I shrink my installation to a very minimum? My goal is to also check-in this "build-eclipse" folder into my project's SVN so that when you check it out, you have everything you need to start a full build, without touching any build.properties. But I don't want to commit 266MB of eclipse if I maybe need only 20MB of it. Thanks Christoph

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  • Using Microsoft.Office.Interop to save created file with C#

    - by Eyla
    I have the this code that will create excel file and work sheet then insert same values. The problem I'm facing that I'm not able to save the file with name giving ten colse it. I used SaveAs but did not work: wb.SaveAs(@"C:\mymytest.xlsx", missing, missing, missing, missing, missing, XlSaveAsAccessMode.xlExclusive, missing, missing, missing, missing, missing); this line of code would give me this error: Microsoft Office Excel cannot access the file 'C:\A3195000'. There are several possible reasons: • The file name or path does not exist. • The file is being used by another program. • The workbook you are trying to save has the same name as a currently open workbook. please advice to solve this problem. here is my code: private void button1_Click(object sender, EventArgs e) { Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application(); if (xlApp == null) { MessageBox.Show("EXCEL could not be started. Check that your office installation and project references are correct."); return; } xlApp.Visible = true; Workbook wb = xlApp.Workbooks.Add(XlWBATemplate.xlWBATWorksheet); Worksheet ws = (Worksheet)wb.Worksheets[1]; if (ws == null) { MessageBox.Show("Worksheet could not be created. Check that your office installation and project references are correct."); } // Select the Excel cells, in the range c1 to c7 in the worksheet. Range aRange = ws.get_Range("C1", "C7"); if (aRange == null) { MessageBox.Show("Could not get a range. Check to be sure you have the correct versions of the office DLLs."); } // Fill the cells in the C1 to C7 range of the worksheet with the number 6. Object[] args = new Object[1]; args[0] = 6; aRange.GetType().InvokeMember("Value", BindingFlags.SetProperty, null, aRange, args); // Change the cells in the C1 to C7 range of the worksheet to the number 8. aRange.Value2 = 8; // object missing = Type.Missing; // wb.SaveAs(@"C:\mymytest.xlsx", missing, missing, missing, missing, //missing, XlSaveAsAccessMode.xlExclusive, missing, missing, missing, missing, //missing); }

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  • MVVM/ViewModels and handling Authorization

    - by vdh_ant
    Hey guys Just wondering how how people handle Authorization when using MVVM and/or View Models. If I wasn't using VM's I would be passing back the Model and it would have a property which I could check if a user can edit a given object/property but when using MVVM I am disconnecting myself from the business object... and thus doen't know what the security should be any more. Is this a case where the mapper should be aware of the Authorization that is in place and don't copy across the data if the Authorization check fails. If this was the case I am guessing that the mapper would have to see some properties on the VM to let the interface know which fields are missing data because of the Authorization failure. If this does occur within the mapper, how does this fit in with things like AutoMapper, etc. Cheers Anthony

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  • Workflow Foundation 4 - DeclarativeServiceLibrary - Error while calling second ReceiveAndSendReply

    - by dotnetexperiments
    Hi, I have created a DeclarativeServiceLibrary using VS2010 beta 2, Please check this image of Sequential Service Following is the code used to call these two activities ` int? data = 123; ServiceReference1.ServiceClient client1 = new ServiceReference1.ServiceClient(); string result1 = client1.GetData(data); //This line shows error :( string result2 = client1.Operation1(); Response.Write(result1 + " :: ::" + result2);` client1.GetData works perfectly, but client1.Operation1 show the following error. Please let me know how to fix this. There is no context attached to the incoming message for the service and the current operation is not marked with "CanCreateInstance = true". In order to communicate with this service check whether the incoming binding supports the context protocol and has a valid context initialized.

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  • AjaxSubmit File Upload - Trying to get response $(document).ready() to fire

    - by ncyankee
    I'm using the jquery form plugin (http://malsup.com/jquery/form/) to upload a file via ajax which is processed in the background. The upload is working correctly, and I am using ASP.Net MVC to return a partial view which contains a $(document).ready call to setup a 'timer' to check on the status of the upload file's processing status. When I return the partial view which contains a script block wit ha $(document).ready call, it is never fired, therefore the 'timer' to check for the status of the upload is never started. When I do this via a regular $.post call (without upload) the function fires correctly after the html is loaded into the DOM. Is there anything else I need to do when calling the ajaxSubmit function to get this to fire? Just a sample bit of code: $('form').live('submit', function () { $(this).ajaxSubmit({ success: function (data) { $('#statusDiv').html(data); } }); return false; });

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  • Is it possible to get the client process ID of an application that runs on SQL server?

    - by Andrea.Ko
    Hi all, For my VFP application, i have a program to check currently who is accessing the server (by using sp_who2), also another progam to check who is currently locking which table. But i wish to know which options my users is accessing at the moment. Am thinking if i can write a SP to get the current connected process ID for a specific client, and insert to a table(ActLog) in SQL with the program name pass into this table during users load the program. And delete that particular record when user unload the program. Then from the ActLog, i can know who is currently accessing to which program. At the moment, i wish to know if i able to get the client process ID? rgds/Andrea

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  • Calling IPrincipal.IsInRole on Windows 7

    - by adrianbanks
    We use NTLM auth in our application to determine whether a user can perform certain operations. We use the IPrincipal of their current Windows login (in WinForms applications), calling IsInRole to check for specific group memberships. To check that a user is a local administrator on the machine, we use: AppDomain.CurrentDomain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal); ... bool allowed = Thread.CurrentPrincipal.IsInRole(@"Builtin\Administrators") This works if the current user is the Administrator user, or is another user that is a member of the Builtin\Administrators group. In our testing on Windows 7, we have found that this no longer works as expected. The Administrator user still works fine, but any other user that is a member of the Builtin\Administrators group returns false for the IsInRole call. What could be causing this difference? I have a gut feeling that a default setting has changed somewhere (possible in gpedit), but cannot find anything that looks like the culprit.

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  • Dojo: drag and drop Stop Drag

    - by Jose L Martinez-Avial
    Hi, I'm trying to use Dojo dnd Source(1.4.2) to create an interface where I can move some objects from a Source to a Target. It is working fine, but I want to change the behaviour in order to execute a check before actually doing the D&D, so if the check fails, an error message is shown to the user, and the D&D is not made. I've tried the following example I found in a blog: dojo.subscribe("/dnd/drop", function(source,nodes,iscopy) { if (nodes[0].id == 'docs_menu'){ dojo.publish("/dnd/cancel"); dojo.dnd.manager().stopDrag(); alert("Drop is not permitted"); } } ); But it fails saying that this.avatar is null. Does anybody know how to do this? Thanks. Jose

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  • SAPI Speech recognition delphi

    - by XBasic3000
    I need create a programatic equivalent using delphi language... or could someone post a link on how to do grammars in peech recogniton using the delphi. sorry for my english... **Programmatic Equivalent C#:** Ref: http://msdn.microsoft.com/en-us/library/ms723634(v=VS.85).aspx To add a phrase to a rule, SAPI provides an API called ISpGrammarBuilder::AddWordTransition. The application developer can add the sentences as follows: SPSTATEHANDLE hsHelloWorld; // Create new top-level rule called "HelloWorld" hr = cpRecoGrammar->GetRule(L"HelloWorld", NULL, SPRAF_TopLevel | SPRAF_Active, TRUE, &hsHelloWorld); // Check hr // Add the command words "hello world" // Note that the lexical delimiter is " ", a space character. // By using a space delimiter, the entire phrase can be added // in one method call hr = cpRecoGrammar->AddWordTransition(hsHelloWorld, NULL, L"hello world", L" ", SPWT_LEXICAL, NULL, NULL); // Check hr // Add the command words "hiya there" // Note that the lexical delimiter is "|", a pipe character. // By using a pipe delimiter, the entire phrase can be added // in one method call hr = cpRecoGrammar->AddWordTransition(hsHelloWorld, NULL, L"hiya|there", L"|", SPWT_LEXICAL, NULL, NULL); // Check hr // save/commit changes hr = cpRecoGrammar->Commit(NULL); // Check hr XML Grammar Sample(s): <GRAMMAR> <!-- Create a simple "hello world" rule --> <RULE NAME="HelloWorld" TOPLEVEL="ACTIVE"> <P>hello world</P> </RULE> <!-- Create a more advanced "hello world" rule that changes the display form. When the user says "hello world" the display text will be "Hiya there!" --> <RULE NAME="HelloWorld_Disp" TOPLEVEL="ACTIVE"> <P DISP="Hiya there!">hello world</P> </RULE> <!-- Create a rule that changes the pronunciation and the display form of the phrase. When the user says "eh" the display text will be "I don't understand?". Note the user didn't say "huh". The pronunciation for "what" is specific to this phrase tag and is not changed for the user or application lexicon, or even other instances of "what" in the grammar --> <RULE NAME="Question_Pron" TOPLEVEL="ACTIVE"> <P DISP="I don't understand" PRON="eh">what</P> </RULE> <!-- Create a rule demonstrating repetition --> <!-- the rule will only be recognized if the user says "hey diddle diddle" --> <RULE NAME="NurseryRhyme" TOPLEVEL="ACTIVE"> <P>hey</P> <P MIN="2" MAX="2">diddle</P> </RULE> <!-- Create a list with variable phrase weights --> <!-- If the user says similar phrases, the recognizer will use the weights to pick a match --> <RULE NAME="UseWeights" TOPLEVEL="ACTIVE"> <LIST> <!-- Note the higher likelihood that the user is expected to say "recognizer speech" --> <P WEIGHT=".95">recognize speech</P> <P WEIGHT=".05">wreck a nice beach</P> </LIST> </RULE> <!-- Create a phrase with an attached semantic property --> <!-- Speaking "one two three" will return three different unique semantic properties, with different names, and different values --> <RULE NAME="UseProps" TOPLEVEL="ACTIVE"> <!-- named property, without value --> <P PROPNAME="NOVALUE">one</P> <!-- named property, with numeric value --> <P PROPNAME="NUMBER" VAL="2">two</P> <!-- named property, with string value --> <P PROPNAME="STRING" VALSTR="three">three</P> </RULE> </GRAMMAR>

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  • javascript onkeypressed not giving current text box content

    - by Austin
    I have an html form like this: <form id="boxy" action="layout.html" method="get" accept-charset="utf-8"> <input type="text" id="a" onkeypress="Boxy.Check(this);"> </form> Invoking javascript like this: Boxy.Check = function() { input = document.getElementById(this.currentSelector.id).value; console.log("\"" + input + "\""); }; However, this.value is the previous value before onkeypress. For example, if I just type "A" into the form, console.log() prints "". And if I type "AA", console.log prints "A". Is there a way to get the current content of the input?

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  • Need to compare blobs in firebird

    - by Michael Beck
    Hey guys, I need to check on the contents of blobs in my databases (yes, plural, but one problem at a time). In one database, I have about 900 images of potentially varying sizes. I need to check to see if the versioning system that's built into our application is actually correctly replicating the image data from the previous version to the new version of a record. How do I compare values en masse so I don't have to pick through each record one at a time and open up the blob using FlameRobin or Firebird Maestro and visually compare these images? Thanks for any assistance.

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  • PHPExcel set specific headers for file format

    - by Asif
    Hi, While googling I found two different sets of headers that need to be set when outputting excel generated in different file format. for e.g. For Type "Excel5" headers are: header("Pragma: public"); header("Expires: 0"); header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); header("Content-Type: application/force-download"); header("Content-Type: application/octet-stream"); header("Content-Type: application/download");; header("Content-Disposition: attachment;filename=$filename"); header("Content-Transfer-Encoding: binary "); For Type "Excel2007" headers are: header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'); header('Content-Disposition: attachment;filename="myfile.xlsx"'); header('Cache-Control: max-age=0'); My question: is there need to set up different headers for each file type as there are other file types also CSV, HTML and PDF?

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  • F# currying efficiency?

    - by Eamon Nerbonne
    I have a function that looks as follows: let isInSet setElems normalize p = normalize p |> (Set.ofList setElems).Contains This function can be used to quickly check whether an element is semantically part of some set; for example, to check if a file path belongs to an html file: let getLowerExtension p = (Path.GetExtension p).ToLowerInvariant() let isHtmlPath = isInSet [".htm"; ".html"; ".xhtml"] getLowerExtension However, when I use a function such as the above, performance is poor since evaluation of the function body as written in "isInSet" seems to be delayed until all parameters are known - in particular, invariant bits such as (Set.ofList setElems).Contains are reevaluated each execution of isHtmlPath. How can best I maintain F#'s succint, readable nature while still getting the more efficient behavior in which the set construction is preevaluated. The above is just an example; I'm looking for a general pattern that avoids bogging me down in implementation details - where possible I'd like to avoid being distracted by details such as the implementation's execution order since that's usually not important to me and kind of undermines a major selling point of functional programming.

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  • Strange padding/margin when using UIWebView

    - by Nicsoft
    Hello, I am creating an app that is having a UIWebView which contains an advert. The size of the view is the same as the advert (image) itself. Still, there is a white margin/padding of some kind above and to the left of the image, inside the UIWebView. Check out the linked image: Also, I did link to the actual advert itself, you can check out the image loaded and view the source code there: Link to advert Any idea how I should remove the white padding? Thanks in advance!

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  • Good example usage of get_or _create in Django views and raising a Form error

    - by Rik Wade
    I would like to use get_or_create to check whether an object already exists in my database. If it does not, then it will be created. If it does exist, then I will not create the new object, but need to raise a form error to inform the user that they need to enter different data (for example, a different username). The view contains: p, created = Person.objects.get_or_create( email = registration_form.cleaned_data['email'], defaults = { 'creationDate': datetime.datetime.now(), 'dateOfBirth': datetime.date(1970,1,1) }) So 'p' will contain the existing Person if it exists, or the new Person if not. I would like to act on the boolean value in 'created' in order to skip over saving the Person and re-display the registration_form and raise an appropriate form validation error. The alternative I'm considering is doing a check in a custom Form validation method to see whether a Person exists with the data in the provided 'email' field, and just raising a validation error.

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