Answer Questions

• linker capturing audio from various devices using Directshow

  hi, i want to record the audio, from various sources, i have started coding by seeing the msdn help, i am getting the problems for creating the filters like CLSID_FileWriter. And there is no class id like the CLSID_WavDest which is written in msdn help at http://msdn.microsoft.com/archive/default.asp url=/archive/en-us/directx9_c_Summer_03/directX/htm/creatinganaudiocapturegraph.asp does any body have refernce code for capturing of audio. thanks in advance Are you using the right value for the dwClsContext parameter in CoCreateInstance It should be CLSCTX_INPROC_SERVER (or one of the flags that includes CLSCTX_INPROC_SERVER, such as CLSCTX_INPROC). That's the only reason that I can think of w ...Show All

• yandrea WPF/E Export: Text as Path, how to change?

  Hi, why isn't it possible to export text as an WPF/E XAML Text element. I currently get all my text exported as a path instead. I'm missing something Michael Yes, of course, I would like to see Blend as WPF/E editor, too, and what I know Microsoft will do that. It makes no sense that a subset of XAML (WPF) couldn't be managed with it. But with Blend you are not able to create graphics as you can do it with Expression Designer, or I'm wrong Michael We're currently working on improved tooling for WPF/E and I realize it's painful where we are today. The workflow I usually use is to do the rich graphics in Design then switch to Blend for the WPF/E XAML (including the text). It's painful, but possible to structure your X ...Show All

• bluebx32 UI Spy can't navigate portions of FireFox

  I was hoping to automate FireFox, but I am unable to navigate to certain controls. UI Spy is also unable to navigate to the controls and gives the following exception: UI Automation tree navigation is broken. The parent of one of the descendants exist but the descendant is not the child of the parent Is this most likely a FireFox issue or a problem that will be worked out in future versions of .NET 3 Any ideas to get around this Thanks! James Firefox use XUL to build its UI. Think of them as special HTML elements so spy++ can't really see them. You can access these dialogs using nsIWindowMediator interface. These guys also looks like they automation firefox dialogs www.artoftest.c ...Show All

• Bahadır KONU WS-AT problem: The MSDTC transaction manager's WS-AtomicTransaction protocol service is disabled

  Hello, I have a very strange problem with the WS-AT controller. I call a simple transactional WCF service once from a WCF client and once from a Java client. When called from the WCF client, everything works fine, but when called from the Java client, I get an exception with the message "The MSDTC transaction manager's WS-AtomicTransaction protocol service is disabled and cannot unmarshal incoming transactions." From the service trace log / service message log, I have the headers of the messages sent to the service both from the wcf client and the java client. Here the headers from the WCF client: <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> <s:Header> <CoordinationContext s:mustUnde ...Show All

• AM Varela workflowInstance.Unload problem

  I'm trying to unload a workflow instance from my host, writing smth like: WorkflowRuntime wr = WorkflowRuntimeHost.Runtime; if (e.ForceBack == ControlFlowMessage.CommandEnum.Back) { WorkflowInstance workflowInstance = wr.GetWorkflow(e.InstanceId); //stepPersistenceService.ForceRollback(e.InstanceId, e.StepId); workflowInstance.Unload(); } and everyting is OK with the persistence (as I persisted the instance once before that), then on the Persisted event I'm trying to load it: void wr_WorkflowPersisted(object sender, WorkflowEventArgs e) { e.WorkflowInstance.Load(); WorkflowRuntime wr = (WorkflowRuntime)sender; ManualWorkflowSchedulerService schedulerService = wr.GetService&l ...Show All

• harvard_isaac Looking for a book review

  Greetigs, I was looking for a book on directshow programming and this book was suggested: Mike Wasson and Peter Turcan: Fundamentals of Audio and Video Programming for Games . Before I buy the book I was wondering if it suits my needs. I am trying to learn programming by writing a frame grabber. I was hoping to learn how to start the camera, initiate and manipulate the data streams, etc. Has anyone used this book, and if so, was it useful Thanks in advance. Actually, for that purpose Mark Pesce's book is probably a better place to start: http://www.microsoft.com/MSPress/books/6381.aspx Unfortunately it appears to be out of print. ---------------------------------------------------------------------------- Mik ...Show All

• WII Activity Binding

  *Senario: Activity1 has a property "Output", which is of string type; Activity2 has property "Input", which is of string type; Activity2.Input is bound to Activity.Output. *Question: 1. At run time, how is the value of Activity1.Output "linked" to (or assigned to) Activity2.Input I have 3 guesses. Guess1: every time the getter of Activity2.Input is called, the function "this.GetValue(xxx)", (inherated from DependencyObject, called by the getter of Activity2.Input), actually checks if there is a binding on this dependency property, if there is, it will follow the binding path and return the value of the target property (in this case, Activity1.Output). Guess2: (I doubt it), the wo ...Show All

• msnashok Getting runtime error at the CreateWorkflow statement in Vista 5472

  I'm always getting the following error at the CreateWorkflow statement, workflowRuntime.CreateWorkflow An unhandled exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll Additional information: Access to the registry key 'Global' is denied. when I run any workflow. I have, > Vista Build 5472 > Vista SDK July > Orcas June CTP > Visual Studio 2005 Extensions for Windows Workflow Foundation RC4(EN) Is there any rights issue involved However, I'm working as administrator. Is it again due to the Orcas version mismatch. When can we expect the matching Orcas for the July CTP. I did not face any such error with the build 5456. Can anyone help me out of this This hap ...Show All

• polymorphicx DirectShow / DirectDraw surface problem (getsurface())

  First off i apaologise as my DirectShow knowledge is more or less non-existant, if it was better this problem would maybe be blindingly obvious but I have searched forums, documentation, usd the DX debugging features etc and still haven't solved it! I am using directshow with directdraw surfaces to play avi's in the Irrlicht engine. they play fine in a windowed app but I have a problem in full screen. the movie is played to a surface then copied to a texture that I can use. The problem seems to be that I use 32 bit textures and that when I call pSample->GetSurface(&pSurface,&Movie_rect); (pSample is a pointer to a IDirectDrawStreamSample) I get a 16 bit surface in fullscreen mode, even though my Irrlicht devi ...Show All

• Terence Lee ConnectDirect() failing without calling CheckMediaType

  Greetings all. I'm just getting into DirectShow programming, so I apologize if this is a stupid question or anything, and I also apologize for my incessant wordiness. I'm trying to make a renderer filter. For my reference, I'm looking at the DX9 Texture Renderer sample. The sample was surprisingly buggy, but after fixing it up I got it to compile and render onto that lovely cylinder. After taking it apart to find out how I could implement something similar in my own program, I found that it worked by just adding the source filter to the graph, adding the custom renderer, and just calling Connect() on the pins, letting the Graph Builder stick in whatever filters it felt was necessary. This is not acceptable to me, because it seems it always ...Show All

• Ben Santiago how to pass data between two activites

  Hi, I am new to WF. In my workflow scenario, there are more than one activity. I want to pass data from one activity to next activity. Is it possible in WF If so, could you please tell me the way to pass data between two activities. Thanks & Regards, Chakri. Kavitha, Now I understood that using dependency properties and activitybind class, we can bind the properties. I feel it is like stating binding. Is there any dynamic binding mechanisms so that i can pass data at runtime -Chakri If you look at that chapter, this is exactly the scenario it describes - you need to bind the data using DependencyProperty. Check out the resources I sent you and le ...Show All

• dwl Some basic questions on wwf

  Hi friends, I came across a good article that says, we can host the designer and allow the non-developer types (a.k.a. business people) to design and edit workflows. Can we host the designer in a web application That is i create my set of custom activities and create a web page that shows the designer with my custom activities and the standard one and any non-developer type person can use it to design and edit workflows Is there some demo example of this, so that i can get a better picture of it. One more question :: "Activities can be viewed as instructions to the workflow engine." Are they part of the workflow engine or can we have a set of activity dlls that can be fed to a workflow engine Thanks a Lot Sonali ...Show All

• Goodwill Sequencing animations

  I've got simple animations going that go left-to-right, and can make them repeat... no problem. Now I have two animations.. a forward and a reverse... let's say it's ">" going left to right and it's "<" going right to left. I want to start off with the ">" but I don't want to see the "<" until the ">" finishes. I'm thinking event triggers, but I also need to turn the images on and off, or set opaqueness or something. I can't find a good example (or I'm missing it) of setting a trigger when an animation hits the end that starts another one. Also, to change properties, I have to go to javascript, right If that's right, then can I launch a javascript at the end of an ...Show All

• akram badr Sample Simple-STS for RC1+: Cannot retrieve a Managed Card from SampleSecurityTokenService

  I can create *.crd without any problems. However, I’m unable to retrieve the Managed card form SampleSecurityTokenServices. Repro: 1. Run SampleSecurityTokenService.exe to accept Managed Cards 2. Go to https://www.fabrikam.com/CardSpace/Sample.htm and click on “Click here to get the Token” 3. Select the Managed Card and Send. Windows CardSpace tries to contact https://www.fabrikam.com:7001/sample/trust/selfissuedsaml/mex and receives the following error. “Your data could not be retrieved from the Managed Card. Check your network connection and verify you have supplied the correct authenticated credentials." In the Event Log, I found the following message: There was a failure making a WS-Trust e ...Show All

• gonzo883 GoTo Activity

  Hi Is there a custom activity which implements the functionality of GO TO thanks Bobs Based on your previous post, I was thinking that you would have trouble breaking the logic down into well defined blocks. If you think you can do that, then I believe the ConditionedActivityGroup will give you the flexibility you want to run those blocks in the order you want, and as many times as you want. It is all rules driven so you should be able to use rule logic to determine what blocks to run. Matt I think I have come up with two possible solutions but now need to weigh up what benefits I would get from using WF with the added complexity against extending our current solution. Option ...Show All