Answer Questions

• Cactus77 Code Activity context menu questions

  On the code activity context menu, two of the selections are: Promote Bindable Properties and Bind Property 'ExecuteCode' (assuming that I placed a value into the Executecode property and created a handler). I'd like to have a better understanding of what these menu selections do. For example, why would a code activity, from the toolbox, have a bindable property Wouldn't that have to be a custom activity with a dependency property I created And why would I bind my ExecuteCode method to a property Thanks. You're right. That was not the best approach to what I was trying to accomplish. I took a new approach. It's more straightforward and it works. Thanks. ...Show All

• Ronaldlee Ejalu Problems creating a custom sequence activity.

  Hi to everyone! I’m trying to create a custom sequence activity which will be used in a state machine workflow. The intended use is to Drag&Drop the custom activity from the toolbox into an EventDrivenActivity (after the HandleExternalEvent). I tryed to add (by designer in VS.NET 2005) a SetStateActivity to my custom activity but this operation is not permitted so I tryed to add it programmatically (for example into custom activity constructor) but I receive an error saying that SetStateActivities are allowed only into StateMachine context and the solution does not compile. So I decided to add it using the ToolBoxItem CreateComponentsCore method but I receive an error. In my custom activity I expose a ...Show All

• Michael Hansen Problem with mediaelement and formato not wm

  I'm trying to test wpf/e potential with media and I have two questions, please: Using mediaelement, I found several troubles with the following format: avi, mpeg, mp3; on the contrary without problem with wmv and wma. I'm not an expert of graphic, but I think it is a little strange, because I write a test in wich all works in a correct way with WPF on the .NET Framework 3.0 and even when I embed the Windows Media Player directly in browser. I tried to build a simple page containing a mediaelement on wich I set dynamically with javascript the propery "source" with an url to a streaming server (i.e. "http://download.microsoft.com/download/3/b/0/3b0b0ab5-eb51-4896-bf3a-2f08a4007144/mike_harsh_wpf_e_2006.wmv"). The control ...Show All

• Buddhist Wrong screen resolution in flip 3d mode with large font

  Hi, I use GetSystemMetrics() to get resolution in flip 3d mode with large font: int nScreenW = ::GetSystemMetrics(SM_CXSCREEN); int nScreenH = ::GetSystemMetrics(SM_CYSCREEN); But I get wrong resolution : 819x566 (my setting is 1024x768), to turn off flip 3d mode, I can get right values. OS: Windows Vista RC1 (build 5600) Get a new graphic Adapter Answer by myself: Use the new API : SetProcessDPIAware(). hey , ive just installed windows vista home edition , its working fine , but i dont have a clue how to use windows aero flip 3d , could u show or tell me how , ive been tryin to use it all day , but i cant get it to work :( . write bak. ...Show All

• Sathyashankar Task scheduler in Vista

  The IScheduledWorkItem::GetExitCode function behaves differently in Vista. It returns SCHED_S_TASK_HAS_NOT_RUN even if the task has been run. Steps to reproduce: Create a scheduled task, in the "Configure for" combo box select "Windows Server 2003,XP,2000". Wait for the task to start and complete. Write a small program that gets a pointer to the task's IScheduledWorkItem interface and calls GetExitCode. The return value will be SCHED_S_TASK_HAS_NOT_RUN. In Windows XP it would be S_OK. Is it a bug Hi,     When I get a task triger from one scheduled task and reset the time of the triger then save it, the task triger can't be updated. Do you have a solution Thanks! ...Show All

• GeorgeBush Controlling Audio Output Levels

  Hello, I've been trying to learn the new Audio APIs in Vista and can't seem to find a way to control the levels of various input devices through the APIs (EndpointVolume,DeviceTopology). If I open the Sound panel->Playback tab->Speakers->Properties->Levels tab, I can see the master volume level, mute, and balance controls, which I can programatically effect using EndpointVolume API. Below that however, I have the same controls for Line In, Microphone, and CD Player that control the level of output to the speakers comming from these inputs. These are the controls I'm trying to effect from the API, but cannot seem to get to. Any advice on this would be greatly appreciated. Thanks, Scott ...Show All

• Tintivilo Workflow Extensions RC5 not working?

  I have installed RC1 of the .NET 3.0 framework ok on my Windows XP x64 workstation, but the Workflow Extensions RC5 for Visual Studio 2005 don't seem to work. They install the SDK but no Workflow options appear in VS2005 The previous CTP (July) worked ok Hi, there, I had the exact the same problem when I saved the rc5 msi locally and then installed it. I managed to bypass this problem by clicking the Run button directly on the File Download Dialog. Try it, it might help. Richard Hello I've done what you suggest and I have the same efect. There is no VS Extentions installed. Any one can help me tkx in advance Paulo Aboim Pinto I cannot install the extensions for visual studio. I have instal ...Show All

• Fabio Vazquez ActivityExecutionStatus Executing to Closed

  I have created a simple Custom Activity and overridden the protected method Execute. The nature of job within Execute is such that the response would arrive into the activity asynchronously, I am returning ActivityExecutionStatus.Executing at the end of the method. I have a delegate callback private void myCallBackMethod(object Sender, EventArgs Args). My callback gets called successfully on recieving the response. What I do not understand now is, how and where do I return ActivityExecutionStatus.Closed so that the workflow having this CustomActivity knows that the activity is completed and it can proceed with the rest of the activities. In my case I will need the workflow execution to wait until the CustomActivity is completed, but since ...Show All

• Bryan7 Calling GetWorkflow multiple times for same instance

  I'm new to WF and still in the experimentation phase. In any case, I came to scenario that seems a bit confusing and was wondering if anyone can shed some light on the matter. I have a very simple sequential workflow that has only one code activity which writes to the console, sleeps 10 seconds, and writes to the console again. To run this, I've created a Windows application with two buttons and their click events are as follows: private void button1_Click(object sender, EventArgs e) { WorkflowRuntime wfr = new WorkflowRuntime(); SqlWorkflowPersistenceService persist; persist = new SqlWorkflowPersistenceService(...); wfr.AddService(persist); wfr.StartRuntime(); WorkflowInstance wfi = wfr.CreateWorkflow(typeof(MyWorkflow ...Show All

• T.Gunaseelan WMI crashes

  Hi All I have a problems with a WMI provider that works fine on all Windows platforms but it is causing the wmiprvse.exe to crash.. I changed the mof files trying to use different declaration for the provider but it still crashes at the first enumeration of instances. The provider is a dll library. This is a part of mof file: instance of __Win32Provider as $P { Name = "NetworkPortInfoProvider"; ClsId = "{4f72b80e-4ba2-4a6c-9735-b84c39fb494b}"; HostingModel="LocalSystemHost"; }; instance of __InstanceProviderRegistration { Provider = $P; SupportsGet = TRUE; SupportsPut = TRUE; SupportsDelete = TRUE; SupportsEnumeration = TRUE; QuerySupportLevels = {&q ...Show All

• thegooner Pattern for updating custom Activity Properties without completing Activity

  Hi Most activities in my workflows are human activities and are therefore event-driven. The workflow blocks at each new activity waiting for a user to click "Complete" or "Approve" in the application GUI. These activities have a number of common business-logic properties, encapsulated in a custom base class. Example properties are: TargetCompletionTime, Priority, RequiresApproval etc. The values of these properties are tracked using TrackingExtracts and custom TrackingProfiles. This allows me to query the tracking service for the current state of my activities, including the values of the custom properties. The complication is that I need to be allow my users to update the values of these activity properties at any time without closing the ...Show All

• chakravarthy_b Dynamic XAML

  Hi, Have played around with the WPF/E plugin and static XAML for a while now. But what I really want to do is to generate dynamic XAML on the server with WPF and push it to the client side. What do I need installed for such a scenario and are there any good examples on how to generate dynamic serverside XAML for the WPF/E plugin Tim Hi Shawn and thanks for your answer. I've had similar thoughts but the idea of working with strings on the server instead of real WPF objects isn't really very attractive. A compromise would be to work with pure XML but for complicated graphics (mostly paths, lines, ellipses) a true object model would make it much more clean. Of course one could create custom ...Show All

• GaryMcC Sample grabber callback / one shot for audio samples

  Hi DirectShow forum, I would like to use the sample grabber to get uncompressed PCM audio data out of my filter graph to play using other means (i.e. not a DirectShow renderer). The sample grabber "one shot" mode would be the ideal solution to this problem, becuase it would allow me to create a simple GetSample function which advances to the next sample and returns the data. Unfortunately, the "one shot" mode is completely broken (as anybody who has attempted to use it already knows...) I can't use the callback functions because my application for the sample data does not match the playback rate of the graph. It would be possible to use the callback functions if I could reliably pause the graph after each callback, allo ...Show All

• sticksnap Retrieving parameter before completion of workflow.

  I have there states (S1, S2 and S3) and two properties (P1 and P2) in my workflow. In S2 i like to get the values of P1 and P2. how can i do this Thanks in advance. Khusal - Yes, u r right i want to assess these properties( P1 and P2) from my Host Application. Actullay I want to maintain the inner state with in a state. State 1 State 2 State 2-1 State 2-2 State 2-2-1 Completion There would be 2 states (State 1 and State 2). State 2 would only come after completion of State 1. In State 2 is having 3 task (STATE 2-1, STATE 2-2 and STATE 2-2-1) user can perform STATE 2-1 and STATE 2-2 same time. But he can move for STATE 2-2-1 only After ...Show All

• sarathy avoid an activity to be removed

  How can I avoid an activity to be removed from the workflow I have a custom workflow with a starting and a closing activity and don't want the user to be able to remove these using the DEL key. I am rehosting the designer in a WinForms app. You will need to create you own designer and override the CanInsertActivities, CanMoveActivities and CanRemoveActivities methods. ...Show All