Re: ID3DX10Mesh and ID3DXMesh Guids EXACTLY the same - COM Discussion Boards

How to Start Scanner and Camera wizard to import pictures by code?

linova20-Jul-09 2:30

20-Jul-09 2:30

I have trouble in getting Scanner and Camera wizard started to import pictures from a removable
Device(such as USB mass storage) through API. Could someone give me some direction?

I know Wia.AutoplayHandler.1 is the one do the job, but I don't know how shell uses Wia.AutoplayHandler.1 and then I don't know how to simulate shell to call it.

In general, when user plug in a MSD device, windows will pop up a Autoplay dialog, and when user select import, a import wizard will pop up. What I need to do is to popup this import wizard dialog and tell the wizard the path(as g:\) where to import, then the wizard will show pictures in the MSD device to user.

The component HKEY_CLASSES_ROOT\WIA.AutoplayDropHandler.1 looks like the thing the wizard uses. But I still don't know the right way to use it as shell does.

Object doesn't support this property or method

peace_smyle16-Jul-09 4:01

peace_smyle

16-Jul-09 4:01

Hi,
I Created one Activex control in c#.net.i assigned stong name to assambly,i registered the assembly,created setup and created the cab file and compiled.

i created one asp.net web application and added Html page and call the activex method in onload using object tag by using javascript.i'm using ie7 to run the application.browser throwing error immediatly as 'Object doesn't support this property or method' i enabled the options in Tools -> InternetOptions -> Security -> Custom level -> enable the Download un signed Activex controls and intialize the unsafe scripting too.

please provide me solution to solve my issue.and how to run the activex control by using iis.how to use the .cab zip file.am struggling alot from long time.plz..plz.. how your will helps me alot..

thanks in advance
krishna

Re: Object doesn't support this property or method

Hristo-Bojilov16-Jul-09 9:12

Hristo-Bojilov

16-Jul-09 9:12

Hi
Are you sure you added ClassInterfaceAttribute to your class like the sample below?

<br />
using System.Runtime.InteropServices;<br />
<br />
[ClassInterface(ClassInterfaceType.AutoDispatch)]<br />
public class MyClass<br />
{<br />
   public MyClass() {}<br />
}<br />
<br />

ClassInterfaceType.AutoDispatch is required if you wanna your class be accessed through a script.

Re: Object doesn't support this property or method

peace_smyle16-Jul-09 19:11

peace_smyle

16-Jul-09 19:11

Hi, still am getting same error sither for the ClassInterface(ClassInterfaceType.AutoDual) or
ClassInterface(ClassInterfaceType.AutoDispatch).if we updated the class of activex control is it required to do create the strong name to the assembly,register the assembly and create the cab file again.

thanks and regards,
krishna

ID3DX10Mesh and ID3DXMesh Guids EXACTLY the same [modified]

Klempie16-Jul-09 2:28

Klempie

16-Jul-09 2:28

I'm doing C# interop with Direct3D (I know about SlimDX and XNA so let's not get into the merits of this) and I'm calling D3DX10CreateMesh passing it my ID3DX10Mesh interface. I'm getting an error saying "No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE))". The D3DX10CreateMesh call comes while I am trying to create a 10 mesh to copy a 9 mesh into (after successfully loading an x file). I've looked at my C# definition of the ID3DX10Mesh and it follows the same structure as every other working interface I've defined.

But then I noticed something. The Guids for the 9 and 10 meshes are *exactly* the same (4020E5C2-1403-4929-883F-E2E849FAC195). I've double checked the d3dx9mesh and d3dx10mesh headers and this is the case. The 9 mesh interface works but the 10 doesn't (This maybe be instantiation-order dependent) I personally don't understand this as it would imply that even in C/C++ apps you couldn't use the two meshes together but we know that you can. I've seen it done in NVUT SDK. I can only think that the Runtime Callable Wrapper is getting confused byt the Guids?

Why would the mesh guids be the same (seems ridiculous to me) and how are C/C++ apps able to avoid the conflict?

PS. I've posted this in the COM forum because the problem is COM not Direct3D.

modified on Thursday, July 16, 2009 9:56 AM

Re: ID3DX10Mesh and ID3DXMesh Guids EXACTLY the same

Randor 16-Jul-09 10:44

Randor

16-Jul-09 10:44

Klempie wrote:
Why would the mesh guids be the same (seems ridiculous to me) and how are C/C++ apps able to avoid the conflict?

Yes, I believe this is normal. DirectX10 is backwards compatible with DirectX9. Only new/incompatible interfaces will have new guid.

Best Wishes,
-David Delaune

Re: ID3DX10Mesh and ID3DXMesh Guids EXACTLY the same

Klempie16-Jul-09 11:08

Klempie

16-Jul-09 11:08

That's just the thing though. The methods on the two interfaces are completely different so I'm not sure how they would be compatible. It looks like I will be forced to do what I need to without using the 10 mesh.

Re: ID3DX10Mesh and ID3DXMesh Guids EXACTLY the same

Baltoro16-Jul-09 15:03

Baltoro

16-Jul-09 15:03

If the methods on the ID3DX10Mesh are completely different from the DX9 version (differing signature parameters, causing it to be incompatible at the binary level), then it seems ridiculous that GUIDs would be the same (as Don Box would say, it violates the basic precept of COM). And, since, I can't imagine the Microsoft DirectX Team screwing up something that obvious and simple, there MUST be another rational explanation.
Anyway, it's good to know,...I'll stick with DirectX 9,...I understand it.

Re: ID3DX10Mesh and ID3DXMesh Guids EXACTLY the same

Klempie16-Jul-09 22:55

Klempie

16-Jul-09 22:55

Yup. The methods do not match up parameter wise, nor do they even match up in terms of implied functionality from the naming.

Low Level Drive Hooks

saif_saifi14-Jul-09 20:18

saif_saifi

14-Jul-09 20:18

I want to know which window message is generated when a volume is inserted, i.e when i insert card in memory card reader's slot an autorun dialog box appears it means there must be some message that is generated when i insert memory card in the slot, I have tried WM_DEVICEARRIVED and also WMI Win32_DeviceChangeEvent but they get fired when I insert the reader into USB slot not when i change the card, but window shows auto run dialog box i want to know that low level window message that is generated when i insert or remove card form slot not the whole card reader.

sssssssss

Re: Low Level Drive Hooks

Randor 15-Jul-09 13:00

Randor

15-Jul-09 13:00

I believe you are looking for the WM_DEVICECHANGE Message[^]. Note that your application will not recieve this message by default. You will need to call the RegisterDeviceNotification Function[^] to register to receive device change notifications.

Best Wishes,
-David Delaune

Re: Low Level Drive Hooks

BrownCodeProject25-Jul-09 21:13

BrownCodeProject

25-Jul-09 21:13

Hello guy, you can try WM_DEVICECHANGE message, and RegisterDeviceNotification() may be useful, good luck! Cool | :cool:

Questions on out-of-proc COM server

WayneS13-Jul-09 3:12

WayneS

13-Jul-09 3:12

I have a couple of questions about developing an out-of-proc (local) COM server using ATL.

I need to figure out how to make the server function as a single instance. Currently, any call by a client app to CoCreateInstance will launch a new instance of my server. Is there a macro or define that I am missing?

I am also having trouble getting QueryInterface to work properly on an exposed class. I can only get a IUnknown ptr to my object. If the client calls QueryInterface to get a different interface, I can see via traces (from defining _ATL_DEBUG_INTERFACES and _ATL_DEBUG_QI) that the QI call on my object (in the exe) succeeds, but but the refcount is only going to 1, then QI succeeds, then release is called, dropping the refcount back to 0. (I am using the singleton class factory.) The call in the client is returning E_NOINTERFACE.

I would appreciate any ideas or suggestions on where to get help.

Thanks.

Wayne

Re: Questions on out-of-proc COM server

Rod_22-Jul-09 0:25

Rod_

22-Jul-09 0:25

to get your server to be a single instance you need to modify the call to RegisterClassObjects to

hr = _Module.RegisterClassObjects(CLSCTX_LOCAL_SERVER, REGCLS_SINGLEUSE);

Dll Registration Problem

Member 428319513-Jul-09 0:56

Member 4283195

13-Jul-09 0:56

hi
I m working on this issue from months but not found a appropriate solution yet.

I had made a customized website on ASP.NET 2.0 my website.My requirement is when ever the client login to my site a(Com)dll has to registerd in his system automatically.

Can anybody suggest me the right solution for it??
how do I able to register that dll to the client end that access my website

I be highly obliged

Thank u

sandhya

Re: Dll Registration Problem

«_Superman_»13-Jul-09 3:38

«_Superman_»

13-Jul-09 3:38

Take a look at the tutorial - How to add ActiveX content to your web pages[^]

By automatically register, if you mean the component must be registered without notifying the user, that is a matter of security settings at the client.

«_Superman_»
I love work. It gives me something to do between weekends.

Re: Dll Registration Problem

Member 428319513-Jul-09 19:57

Member 4283195

13-Jul-09 19:57

I am using cab,msi files with this the dll is registering while i rebuild the solution.But my requirment is after hosting my site,when i requested the url the dll has to be register.

sandhya

Re: Dll Registration Problem

Md. Marufuzzaman24-Jul-09 23:12

Md. Marufuzzaman

24-Jul-09 23:12

Please let me know that you COM+ is need to register in GAC?

Thanks
Md. Marufuzzaman

Hook the drag and drop functionality of windows.....

FSam12-Jul-09 21:11

FSam

12-Jul-09 21:11

Hi, all

i am quite tired in searching for any thing that can help me in hooking the drag and drop functionality of the windows, and yet i am unable to find an exact solution....

what i want to do is to check the file's name before being dropped, anywhere in my system...then allow or disallow the movement of the file according to my requirements...so i have to make a dll to hook the event being generated by the drag and drop opertaion..

there is a lot about setwineventhook() api but i am unable to understand it completely ...whether it is used to hook the event generated while dragging an object???is there any interface to use this api???is this the right way ot hook the drag and drop handler...just like to hook the copy,paste operations there is an ICopyHook interface ..???

plz tell me if i am heading in the right direction aur if not then plz direct me in the right direction....

urgently need a help..thanx in advance.. Smile | :)

Sameen.

Re: Hook the drag and drop functionality of windows.....

FSam13-Jul-09 20:22

FSam

13-Jul-09 20:22

isn't there anyone who can help me.... Confused | :confused:

...plz rply

How to raise Performance of COM Server of external API ?

gehbitte12-Jul-09 3:17

gehbitte

12-Jul-09 3:17

Hi there,

I already described my problem here.

Short description: I am using an API from an DataProvider to program a financial stock exchange analysis program. I can fill a DataStream Object provided by the external API with multible Instrument Objects. This DataStream fires events every time a new price occurs for the respective instrument on the exchange.

If there are many (>50.000) Objects in the DataStream, sometimes it will stop firing the events. It has nothing to do with my code, I already tested the code performance and it looks ok. So somehow this "COM-Server" of the external API is the reason for this behaviour. I noticed, that the problem will occur more often on systems with older CPUs. So it also has something to do with the CPU Power.

Is there any way to influence the performance of the COM Server? Something in the Network Preferences?

Any suggestions would be appreciated.

Re: How to raise Performance of COM Server of external API ?

Baltoro12-Jul-09 10:58

Baltoro

12-Jul-09 10:58

You don't say how you instantiate the COM Server, but if it's an out-of-process server, or a component that you access from a remote machine, and you are a client of that server, then the COM library uses the RPC protocol to transfer the data back and forth between the two machines. You might refer to: The Network Protocol[^], a chapter from the book "Inside COM+", which describes the methods COM uses to communicate with a DCOM component on a remote machine. Also, from the same book, Standard Marshaling[^], explains the actual COM Library mechanisms involved in managing the proxy and stub architecture.
If you are accessing an out-of-process server, then that is definitely your bottleneck, and not the code that you posted in the C# Forum.

Re: How to raise Performance of COM Server of external API ?

gehbitte12-Jul-09 23:48

gehbitte

12-Jul-09 23:48

Ok, i'm coding in CSharp. The DataProvider API is the TaiPanRealTime API which I define in the Program.cs class:

public static TaiPanRTLib.TaiPanRealtime Tapp;

so I do with the DataStream object from TaiPan, which fires the respective events:

TaiPanRTLib.DataStream TPStream;

I instantiate the Class (start the Server) in a method:

if (Tapp == null) { Tapp = new TaiPanRTLib.TaiPanRealtime(); }
TPStream = (DataStream)TPapp.DataStream;

I add the events:

TPStream.Brief += new _IDataStreamEvents_BriefEventHandler(TPBrief_Brief);
     TPStream.Geld += new _IDataStreamEvents_GeldEventHandler(TPBrief_Geld);

So thats how I set up the TaiPan Application (and with it the COM Server).

I am not a network specialist, all I could learn from the link you posted is that the COM Server uses the RPC Protocol. The RPC runs in a svchost.exe process, but I don't see any performance changes of the respective processes in the taskmanager when I start my program.

But thank you anyway for your help!

Re: How to raise Performance of COM Server of external API ?

Baltoro16-Jul-09 14:53

Baltoro

16-Jul-09 14:53

...Sorry, didn't mean to confuse you,...but, I got the impression that you code was OK, and that you were losing data because of physical system execution limitations. You suggested that there might be some setting in Network Preferences that would increase the performance of your DataProvider. Naturally, I assumed that you were receiving your data over the wire (which is why I made the RPC suggestion).
...So, now. I'm confused. When you describe the DataProvider as an external API, what does that mean? The library exists on your machine, and you are just linking to it when compiling? Or are you using a header file that was provided by someone who developed the Data Provider, and you use that information when instantiating (with CoCreateInstanceEx, or equivalent COM library function). Are you just developing a client application, or both a server and client, and are testing it on your machine? Can you understand my confusion?
Anyway,...I'm guessing that you have it all figured out by now.

Re: How to raise Performance of COM Server of external API ?

gehbitte16-Jul-09 21:00

gehbitte

16-Jul-09 21:00

I am sorry about the confusion, I will try to describe it better:

TaiPanRealtime is a Financial Charting Software from the company Lenz&Partner and can be downloaded here[^]. You must have a valid account to use this software.

It features Realtime Charts, News etc which you can access through a GUI. And it also comes with a C# API, that's what I meant with 'external API'.

After installation of the TaiPanRealtime software, in my C# Project I can add a COM Reference to the TaiPan Realtime Library to access certain functions like the DataStream I described in the posts above. [I just noticed that the path to this library does not point to an *.dll file but to the TaiPanRT.exe, don't know if this is important.] When I start my program, I first have to login to TaiPanRealtime. TaiPanRealtime then connects to the server at Lenz&Partner via internet.

When i am using the TaiPanRealtime-DataStream object, the server at Lenz&Partner have to know which symbols (equities) I am interested in. This is done by filling the DataStream with symbol numbers. The server then starts to deliver current prices for the respective instruments. The Data comes over the Internet, through the TaiPanRealtime Application and finally in my program where I can analyze it.

I already talked to the support at Lenz&Partner and there is where I first heard the word 'COM-Server'. They said, the TaiPanRealtime Application stored on my computer contains this 'COM-Server' and its performance causes my problems.

If anything is not clear, please say.

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