COM

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ATL client 31-Jul-01 4:25 31-Jul-01 4:25  How can an ATL in-proccess be client ,in a nother word how it can call another Acticex Dll and wich is the best function can do that Re: ATL client Not Active31-Jul-01 15:23 Not Active 31-Jul-01 15:23  MyActiveX::CallOther() { CoCreateInstance(YourActiveX); // Not proper code, but you get the idea } Re: ATL client 31-Jul-01 22:47 31-Jul-01 22:47  Hi, Could I use a smart pointer instead of CoCreateInstance(...)?? Re: ATL client Not Active1-Aug-01 2:52 Not Active 1-Aug-01 2:52  Yes, and you could also read a book or other documentation. Using com dll in anothor com dll 30-Jul-01 23:12 30-Jul-01 23:12  I develop application in VC++ I need to use com dll in another com dll,is it possible?? Thnks Re: Using com dll in anothor com dll 31-Jul-01 9:22 31-Jul-01 9:22  Of course. If your module supports a dual interface add a header file created by MIDL compiler to the project and you can use the powerful of vtable. If your COM module implements only IDispatch you have to generate a class derived from COleDispatchDriver ( by ClassWizard). palmap32.dll <-pretty impossible !?! 30-Jul-01 11:42 30-Jul-01 11:42  Hello every1! I am looking at some sample code that microsoft is giving out with MSDN and i can't understand what is going on...if some1 knows it... Here's the problem - the project palmap(can be found in any MSDN library) is a dll file that is used as an extension of aviview(a prog for viewing avi files and also can be found in the MSDN). A part of the source of palmap.c says: typedef struct { IAVIStreamVtbl FAR * lpVtbl; ULONG ulRefCount; // // instance data // PAVISTREAM pavi; PGETFRAME pgf; AVISTREAMINFO sinfo; HPALETTE hpal; LPBYTE lp16to8; LONG lLastFrame; LPBITMAPINFOHEADER lpdibLast; } PALMAPSTREAM, FAR*PPALMAPSTREAM; There is something sneaky in this struct since IAVIStreamVtbl is defined nowhere(i checked the headers and tried to see if any IDLs exist). I searched the whole project directory for that string and there is no match. It is obviously the vtable and also has an interface prefix but i don't find any interface definitions too. BTW: i tried to look for the definition by clicking with the right button on the "IAVIStreamVtbl" and choosing "Goto definition...." but there is no brosing files with that project. After building the project there are no errors or warnings. so - Where could this IAVIStreamVtbl be defined? Thanks for any reply! Vladimir Ralev Re: palmap32.dll <-pretty impossible !?! Kevin Cook2-Aug-01 17:09 Kevin Cook 2-Aug-01 17:09  Look for a #import statement. Look for xxxx_i.h file after the compile. COM+ Code Sample Todd Richardson30-Jul-01 7:59 Todd Richardson 30-Jul-01 7:59  Are there any good code samples available on this site (or elsewhere) that I can use to get idea of the workings of a COM+ application? I already have a pretty good textbook understanding of COM+. Thanks for your help! Out parameter as pointer parag29-Jul-01 21:45 parag 29-Jul-01 21:45  I have out parameter as IUnknown** on the server side method Method(IUnknown** ptrIUnknown) Now on the client side , how do i call the method i declared IUnknown* pIUnk; Then I call some method Method(&pIUnk); but IUnknown pointer does not get filled up what is the mistake in this ? parag any good material on com in net? pathi29-Jul-01 21:08 pathi 29-Jul-01 21:08  hi I want some good samples on aggregation ?Where can I find links for this? please help Pathi bhikshapathi_g@semanticspace.com CoInitialize has not been called. 28-Jul-01 22:59 28-Jul-01 22:59  I am using visual basic to develop an application using a VB ActiveX dll I have created a multithreading tech. using window API function CreateThread(...) like this :- ------------------------This laid in XClass in the ActiveX dll------------- lRet = CreateThread(0, _ 0, _ AddressOf TheThread, _ 0, _ 0, _ lThreadID) ----------------------------This thread Function is laid in some module------- Public Function TheThread(ByRef p As PARAMETER) As Long On Error GoTo TheThread_Error XClass.SpecialFunction Exit Function TheThread_Error: MsgBox ("TheThread had an error : " + Err.Description) End Function But there is a run time error message comes up say "CoInitialize has not been called" Can some body help me. Thanks. Re: CoInitialize has not been called. Not Active29-Jul-01 15:03 Not Active 29-Jul-01 15:03  You must initialize the COM libraries in each thread to be able to use it. If you need to do multi-threading I would give up on VB and use C++. about Microsoft Agent 2.0 ActiveX 26-Jul-01 17:40 26-Jul-01 17:40  If I use Microsoft Agent 2.0 com Interface for programming, (Microsoft Visual C++6.0) how can I add a button or CheckList on WordBalloon like Microsoft Office Assistants? if you know,Can you tell me? Thank you ! Active X installation 26-Jul-01 6:33 26-Jul-01 6:33  I have written a program using the MSComm Active X component. Now I'm on the point that I want to make an install shield for this program. What is the best way to do this when I want to register the MSComm component to the OS automatically? Any tips and tricks are welcome. Regards, J hn Re: Active X installation Not Active26-Jul-01 18:01 Not Active 26-Jul-01 18:01  What version of Installshield are you using? Re: Active X installation 26-Jul-01 23:48 26-Jul-01 23:48  install shield for Microsoft Visual C++ 6.0 Re: Active X installation Hadi Rezaee28-Jul-01 19:07 Hadi Rezaee 28-Jul-01 19:07  Hi John, I wrote program with MSCOMM, too. But my program have problem in sending and recieving data !!! Of course i use of SetOutput() and GetInput(), But ... Can you explain to me, why ??? My month article: Game programming by DirectX by Lan Mader. Please visit in: www.geocities.com/hadi_rezaie/index.html Hadi Rezaie Re: Active X installation 31-Jul-01 1:07 31-Jul-01 1:07  I have sent you examples by e-mail. John DoModal from an Interface (Simple Object) 26-Jul-01 2:09 26-Jul-01 2:09  Hello, I wrote a COM DLL with an interface: IMyInterface. I added to the project a dialog (inherits from CDialog): CMyDlg.h and CMyDlg.cpp. In the class of the interface I added: CMyDlg m_dlg; and when I call: m_dlg.DoModal() it fails in DestroyWindow() inside the DoModal function. What did I do wrong? I only need to open and close a regular dialog through an interface! Thank you, Penina. DirectShow 25-Jul-01 5:25 25-Jul-01 5:25  Does anyone knows how to change the format of a pin? I can change it in the GraphEditor, but I don't know how to change it in code. (I need to change the size of the frame to 320*240). Thank you. Can't register the service? zhaoyong25-Jul-01 2:17 zhaoyong 25-Jul-01 2:17  i use the ATL wizard create a COM service.When I execute the command "myservice.exe /Service" on the computer ,not install VC(NT4 SP4),I can't register it. but when i can execute the command succefully on the computer with vc6. Re: Can't register the service? Not Active25-Jul-01 3:22 Not Active 25-Jul-01 3:22  Sounds like your missing a file, or files, on the non-development machine. Use depends and make sure all files are present on the target system. GetProperty and VARIANT AlexEg24-Jul-01 23:34 AlexEg 24-Jul-01 23:34  Hi, I need read text value from property which is in registry defined like VARIAT. So I use following code: COleDIspatchDriver m_Driver; ... VARIANT res; VariantInit(&res); m_Driver.GetProperty(Id_PropText, VT_VARIANT, (void*)&res); ... And that returns res.vt=0x2008, res.bstrVal=0x0018f040. But no text even in the data source is correct text value of this property. Have you any idea where can be problem? Thanks Alex. when to call AddRef() and Release pathi24-Jul-01 21:26 pathi 24-Jul-01 21:26  hi I am getting confused as when to call the methods AddRef() and Release() methods.I am using aggregation hence please tell me in detail.I am new to com Thanks Pathi bhikshapathi_g@semanticspace.com

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