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Problem adding previously deleted method in ATL COM Dave Moran27-Feb-01 5:22 Dave Moran 27-Feb-01 5:22  I deleted an interface method and and tried to add it again but I get the following errors twice when compiling: ...\include\atlcom.h(1827) : error C2259: 'CComObject<class cessunit="">' : cannot instantiate abstract class due to following members: ...\include\atlcom.h(1823) : while compiling class-template member function 'long __stdcall ATL::CComCreator<class atl::ccomobject<class cessunit=""> >::CreateInstance(void *,const struct _GUID &,void ** )' ...\include\atlcom.h(1827) : warning C4259: 'long __stdcall IESSUnit::ClassDescription(void)' : pure virtual function was not defined ...\esscounit.h(205) : see declaration of 'ClassDescription' ...\include\atlcom.h(1823) : while compiling class-template member function 'long __stdcall ATL::CComCreator<class atl::ccomobject<class cessunit=""> >::CreateInstance(void *,const struct _GUID &,void ** )' I've tried removing every instance of 'ClassDescription', restarting DevStudio and rebuilding the entire COM. I've tried adding the method without arguments. Nothing works. Any suggestions? Dave Dave http://www.unit-conversion.com http://www.essco.co.uk Re: Problem adding previously deleted method in ATL COM Julien28-Feb-01 16:20 Julien 28-Feb-01 16:20  hey Dave, Devstudio also generates a .rgs file, look inside and you'll find that it like a .reg file. You can manually update this but its like modifing generated code... If your up to it, recreate the project and re-add the methods. Let me know how you go. Jules Re: Problem adding previously deleted method in ATL COM Dave Moran1-Mar-01 1:26 Dave Moran 1-Mar-01 1:26  Thanks for replying. When I looked in my three .rgs files (one for each of my interfaces) I didn't find anything that relates to the individual methods, only the interface itself. What am I meant to do with this file? Dave http://www.unit-conversion.com http://www.essco.co.uk ActiveX and events Ivan Polak27-Feb-01 3:52 Ivan Polak 27-Feb-01 3:52  I use in dialog-based application ActiveX object (1) and in ActiveX object (1) second ActiveX object (2). I don`t use events from first ActiveX (1) in second ActiveX (2). Please, help me. Thanks. Ivan Re: ActiveX and events Julien28-Feb-01 16:34 Julien 28-Feb-01 16:34  Ivan, I assume you are asking if your DialogApp can receive event from the 2nd ActiveX Control. You need to somehow get access to ActiveXCtrl2 and I recommend that that you implement a mehtod in ActiveXCtrl1 like: HRESULT GetActiveX2(IUnknown** ppUnknown); Which will supply you with the Interface pointer. Then you can do the usual QueryInterface stuff to get a handle to the ctrl. That then leads to Asking for the ConnectionPointContainer etc. This is assuming C++ of course. Sorry I couldn't go into more detail, but there just so much I didn't know where to start. Jules ActiveX Ivan Polak27-Feb-01 3:43 Ivan Polak 27-Feb-01 3:43  Can I insert first ActiveX object into second ActiveX objekt and use second ActiveX object in dialog-based application. Thanks. Ivan Voice Recorder control Heidyen25-Feb-01 18:48 Heidyen 25-Feb-01 18:48  hi I would like to know where can I download the audio source code for Windows CE(ATL COM)? IShellFolder and EnumObjects,CreateView... aes24-Feb-01 10:23 aes 24-Feb-01 10:23  Hi, I'm not sure that this is the right forum but I coldn't find any "Shell" forum. I'm sorry if this is the wrong forum (please correct me if so). I'm currently developing a shell extension that resides on desktop. It uses a database for dynamic subfolders display. Each subfolder could possibly have different types of mount points (e.g. Compound file, a directory or database "fs"...). ShExt | A Folder (DB Retrieved "root" folder) ....| Compound "fs" Next Folder (DB Retrieved "root" folder) ....| Database "fs" etc... Many Thanx in Advance Mario Problems/Questions: P1) Each "root" folder needs a login: When a new "root" folder is about to expand i use SHChangeNotify with SHCNE_MEDIAREMOVED (since i've marked the "root" folders as removable) to compress the possibly old expanded folder is being compressed. The problem is that explorer is wery slow, it always enumerates the new folder before compressing the old one and makes it really messy. Q1) Is it some way of making explorer to compress it first and then use the enumerator? (I don't want to do any "hacking" in the tree pane... P2) Since my implementation internally just uses UNICODE and I don't have a Win95 box: I don't like to have separate distributions of my program at least internally the same, except for the UI stuff... Q2) Does Win95 query for e.g. IExtractIconW or does it just uses IExtractIcon ? P3) Not really a problem, but laziness (or rather less code to maintance)? Q3) Is there any "generic" helper object that I could use for the view pane if no custom is needed (that takes IShellFolder* param and uses the enumerator, IExtractIcon etc... and populates it...)? P3) Well... not a problem, rather a general question? Q4) Why do explorer (on my Win200 machine) seems so "sloppy" in terms of instantiating uneccesary many times? Dump (I've written the component in ATL : FinalConstruct Initialize GetClassID FinalConstruct Initialize EnumObjects FinalConstruct Next, GetDisplayNameOf Next, GetDisplayNameOf Next, GetDisplayNameOf Next FinalRelease FinalRelease FinalRelease // Ok, until here (seems to use threads to do above stuff) // Here the strange stuff begins... It seems, for me anyway, // wase of computational power doing that many // instantiation of the object? // (Lucky me that I don't do that much in the Initialization process (FinalConstruct, // Initialize), merely store the pidl for futher use, // but one might have to do some more processing one day in the Initialization routine) FinalConstruct Initialize GetDisplayNameOf GetUIObjectOf FinalRelease FinalConstruct Initialize GetDisplayNameOf GetUIObjectOf FinalRelease FinalConstruct Initialize GetDisplayNameOf GetUIObjectOf ... ATL ActiveX Control - Window Creation 23-Feb-01 3:36 23-Feb-01 3:36  Hello, I am creating an ActiveX control using ATL to replace an existing one based on MFC - it all works fine in test container. I have a problem when putting the control onto a HTML page. The previous control loaded a file in the onload handler in javascript: e.g. function myloader() { myobject.loadfile("wibble.file"); } etc. the onload code needs a valid window to have been created - the problem is that the window is not created until after the method is called. I have the m_bWindowOnly set to true so it should be trying to create a windowless control. anyone else come across this or know how to overcome it. Thanks Building MFC COM Connectable Objects 21-Feb-01 2:21 21-Feb-01 2:21  How do I built a connectable component using MFC? The component should be capable of sending and receiving events. Thanks, Can't use a handle to object 18-Feb-01 8:49 18-Feb-01 8:49  When I pass a handle of file (or bitmap) to the server ,which has been opened from the client , the server can't access the file.When the server reads from the file , the operation don't return an error code but the information that has been read is wrong(or the bitmap can't be selected in any device context).I tried lots of things , but nothing helped me.Please help me. Re: Can't use a handle to object Julien28-Feb-01 16:55 Julien 28-Feb-01 16:55  hey Joe, You can not use HANDLE's between processes. You need to call DuplicateHandle to have your second process have its own handle to the same resource. Watch out for the first arguement to DuplicateHandle as it is a HANDLE to the process that created it, the way to get that is to call OpenProcess with the ProcessId. Jules Microsoft MPEG4 Video Compressor 17-Feb-01 10:39 17-Feb-01 10:39  My MS-Mpeg4 compressor has become corrupt, I cannot find this file anywhere. Could somebody please advise me on where I may find this file ?? Regards Robin How to get the IDispatch* from a specified OLE server instance? 16-Feb-01 14:26 16-Feb-01 14:26  Hi Guys, My application is needed to connect to another application that supports automation( like Word, Exec), but the problem is: When I start my application, the application I want to connect may have many running instances, if I use the ProgID to get the ClassID and create a DispatchDriver by that ClassID, I always get the IDispatch* from the first started instance. Do you guys know anything about how to do that and kindly give me some ideas? COM+ Alpesh Makwana15-Feb-01 23:31 Alpesh Makwana 15-Feb-01 23:31  Hello, Can anyone point to a good resource (Book/Web) where I can find articles on creating COM+ object with VC++ can't see combobox's strings in (ATL) at Run time Stephane Koomson15-Feb-01 11:35 Stephane Koomson 15-Feb-01 11:35  Hi everyone, I'm trying to build an activeX (ATL)witch contain a combobox. The problem is, I can't see the strings that I add in the combobox list. At test mode everything seem perfect, but When I insert my New control in any container there is no string inside. I learned on another site that it is a bug, But they don't say exactly how to solve it. I'm usign Visual C++ 6.0 to build it. This crucial for me Please if you have any solution contact me that will appreciated. Email: skoomson@motus.com vbcomponent in Javascript Praveen15-Feb-01 10:47 Praveen 15-Feb-01 10:47  Hi, I have developed a vbcomponent(Activex dll).the component has the function like this SynonyList(Words, WordList, MeaningArray, cou)-Words,wordlist,meaningarry,cou are variant. if u pass a word in this fucntion it returns wordlist,meaningarry as array of strings,cou as integer.if i use this in vbscript it works .but javascript i don't know how to pass it to the function. pls give me ur suggestions. Making part of an MFC ActiveX control transparent 15-Feb-01 4:08 15-Feb-01 4:08  Hello I'm working on VC++6 , on Windows NT. I'm planning on building an MFC ActiveX. The ActiveX looks like this: It will look as a black rectangle but in the rectangle there will be an inner rectangle which will be transparent. So you will have an internal transparent rectangle inside A black rectangle. Does anyone knows how to make an ActiveX control that has a transparent rectangle inside it ? Thanks , Roni dcomcnfg 13-Feb-01 20:31 13-Feb-01 20:31  When a NT workstation is installed in a certain domain A, and then moved to another domain B, then following happens: When a COM-component is registered, in the dcomcnfg you see owner : account unknown. What can be the reason ? Best regards, P. de Hon ContextMenu on rightclick of network neighborhood computer 13-Feb-01 16:13 13-Feb-01 16:13  Have any idea about how to invoke a context menu on right click of Network Neighborhood computer. Say u want to display two menu items like connect and disconnect of a n/w neighborhood computer using ShellExtensions. Any idea or suggestions highly appreciated.. Pls. provide how to register the component , i mean under what hive to be registered. Thanks & Regards, soma MMC snap-in 13-Feb-01 1:45 13-Feb-01 1:45  Hi, I've got to develop a snap-in for the Microsoft Management Console (mmc). I dont have documentation to do that. If someone have a link or an example to help me it would be very apreciate. I usually seen the msdn documentation but it's not very clear in my head and I have trouble with the example. Thanx for helping me !!! Re: MMC snap-in 15-Feb-01 10:16 15-Feb-01 10:16  This months (MARCH 2001) MSDN Magazine page 56 titled "Build more flexible console snap-ins with the MMC 2.0 Object Model". I hope this helps... Re: MMC snap-in 5-Mar-01 21:27 5-Mar-01 21:27  Yap, let's write snapins using visual basic. C001! Re: MMC snap-in 5-Mar-01 20:54 5-Mar-01 20:54  I've wrote one... Feel free to contact me mailto:reznitskiy@softlab.ru (english/francais/russian). And there is some documentation in msdn on writing snapins. Problems registering DLL 12-Feb-01 7:23 12-Feb-01 7:23  I'm writing a COM Application using ATL. Up until now, I haven't had a problem with building the DLL. I was debugging my application and made a minor change to solve a problem. But I couldn't register my DLL. I undid my change but I still get the following error: Linking... Creating library Debug/MAPConnector.lib and object Debug/MAPConnector.exp Performing registration RegSvr32: LoadLibrary(".\Debug\MAPConnector.dll") failed. GetLastError returns 0x000000c1. MAPConnector.dll - 0 error(s), 0 warning(s) Could someone tell me what the error message means and how to solve it? I'll appreciate any help I can get.

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