ATL / WTL / STL

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Terminal Across Network SiddharthAtw20-Oct-04 18:34 SiddharthAtw 20-Oct-04 18:34  Need suggestions for the problem preferrably in VC6: There are two machines A and B. A telnet(or SSH) to B.On logged in to B, B should give it's own window in Machine A. That is, B should be the owner of window in A. If it is something to do with XWindows or Xterm, I am not clear how exactly to hit the problem. I hate that lazy Java distributing atl71.dll in setup Anonymous19-Oct-04 23:34 Anonymous 19-Oct-04 23:34  i am working on a project which needs vc7 specific dlls ( atl71.dll msvcr71.dll etc) which i need to ship to the client thro the setup. Since these dlls are not registered where should my setup register / copy these dlls so that my code uses them. if these are not COM dlls then how do they get referenced when any piece of code uses them? Re: distributing atl71.dll in setup Jörgen Sigvardsson20-Oct-04 8:43 Jörgen Sigvardsson 20-Oct-04 8:43  Same directory as the binary or a directory which is in the PATH environment variable, C:\Windows[\system32]. I'd opt for same directory as binary, just to make sure no other app replaces your dll's. -- Weiter, weiter, ins verderben. Wir müssen leben bis wir sterben. Re: distributing atl71.dll in setup Michael Dunn20-Oct-04 9:14 Michael Dunn 20-Oct-04 9:14  Installing anything into windows and/or system32 is discouraged these days, because it leads to DLL Hell™. Installing into the app dir, and creating a APPNAME.exe.local file is the way to go on Win2K+. -- I'm Michael Dunn and I approve this post. Vote Trogdor in oh-four! Re: distributing atl71.dll in setup Jörgen Sigvardsson20-Oct-04 12:28 Jörgen Sigvardsson 20-Oct-04 12:28  What's the .local file for? -- Weiter, weiter, ins verderben. Wir müssen leben bis wir sterben. Re: distributing atl71.dll in setup Michael Dunn21-Oct-04 2:32 Michael Dunn 21-Oct-04 2:32  In short, it tells the OS to load DLLs from the EXE's directory if they exist there, before searching the normal path for DLLs. More info here[^] -- I'm Michael Dunn and I approve this post. Vote Trogdor in oh-four! Re: distributing atl71.dll in setup Jörgen Sigvardsson20-Oct-04 8:45 Jörgen Sigvardsson 20-Oct-04 8:45  Hmm.. wait. The beside-executable option may not work on Win9x. I'm not sure. -- Weiter, weiter, ins verderben. Wir müssen leben bis wir sterben. Re: distributing atl71.dll in setup UncleRedz20-Oct-04 20:34 UncleRedz 20-Oct-04 20:34  Don't quote me on this but I recall that on NT4 (at least with SP3) and older OS such as Win9X the dll loading first looks in the system folders and then looks in the application folder ("beside-executable" option), resulting in windows loading what ever version is in the system and not the new version that is in your application folder. As opposed to W2K and XP that first look in the application folder and then in the system folders. Re: distributing atl71.dll in setup Stuart Dootson21-Oct-04 8:47 Stuart Dootson 21-Oct-04 8:47  This page implies that Windows looks in the application folder first for DLLs. Stuart Dootson 'Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p' WTL release build with ATL_MIN_CRT UncleRedz19-Oct-04 4:36 UncleRedz 19-Oct-04 4:36  Hi, I'm using WTL7 (also tried WTL71) for a project that has to be kept small, so I'm using ATL_MIN_CRT when doing the release build, this works fine in VC6, no compile or link errors. But, here's the problem, if I try to upgrade the project to VS.NET2003, the release build will not link properly, giving the following errors: Linking... LIBCMT.lib(crt0dat.obj) : error LNK2005: __osplatform already defined in atlmincrt.lib(atlinit.obj) LIBCMT.lib(crt0.obj) : error LNK2019: unresolved external symbol _main referenced in function _mainCRTStartup I know this is saying that something is causing the compiler/linker to use CRT, which fails due to ATL_MIN_CRT. Skipping ATL_MIN_CRT is not an option. I have checked the project settings and everything seems to be correctly upgraded from VS6 to VS.NET2003 and the code haven't changed. What could be the problem? Is it still a matter of trying to track down what function call is pulling in the CRT lib? This is anoying since, well, it worked before. Any ideas or things to keep in mind when working with WTL and VS.NET2003? Cheers! Re: WTL release build with ATL_MIN_CRT UncleRedz19-Oct-04 20:45 UncleRedz 19-Oct-04 20:45  OK, found it. I had an atoi() call somewhere, replacing that with StrToInt() did the trick. Strange that it worked in VS6 but not VS.NET2003. Cheers Re: WTL release build with ATL_MIN_CRT Jörgen Sigvardsson19-Oct-04 22:12 Jörgen Sigvardsson 19-Oct-04 22:12  I believe you can find these dependencies quite easy. Link dynamically against the CRT without ATL_MIN_CRT. Launch the Dependency Walker (Depends.exe in your VS.NET tools directory), and open your binary with it. Locate the MSVCRT.DLL entry in the tree view and select it. On the right hand side you see two list views with function entry points. The top list view contains the functions which you import from the selected DLL. From there on, it's just a matter of Find in Files to rid yourself of the offending function call(s). -- Weiter, weiter, ins verderben. Wir müssen leben bis wir sterben. Re: WTL release build with ATL_MIN_CRT UncleRedz20-Oct-04 4:29 UncleRedz 20-Oct-04 4:29  Nice, I did not know this, that makes it a lot easier. Thanks! Re: WTL release build with ATL_MIN_CRT ThatsAlok21-Oct-04 2:30 ThatsAlok 21-Oct-04 2:30  thanks mr Jörgen for this great help ----------------------------- "I Think It Will Help" ----------------------------- Alok Gupta visit me at http://www.thisisalok.tk Help creating VB6 com objects from atl service nalenb18-Oct-04 7:31 nalenb 18-Oct-04 7:31  Hi, I created a new ATL service using vs.net 2003. In the PreMessageLoop function I create a new thread which does some work (after calling the parent PreMessageLoop method), the rest of the standard service code is unchanged. In this thread I create an instance of a CComObject which is in the same atl project using CComObject::CreateInstance(&a);. This CComObject is free threaded and I've defined free threading in stdafx.h. CoInitializeEx is properly called with multithreading. After the instance is created, a method is called on the object (A->Load()). In this method (Load) I create an CComPtr<vbobj> vb; object using CoCreateInstance (CLSCTX_INPROC_SERVER | CLSCTX_LOCAL_SERVER | CLSCTX_REMOTE_SERVER) which is an instance of a com object from a VB6 dll. When I call a method on this newest object (vb), I get a whole bunch of exception errors (First-chance exception at 0x7c57e592 in MyService.exe: Microsoft C++ exception: long @ 0x0151c7e0.) in the output window (thousands of these errors) and my code appears to be hung (it should complete the method call in about 30 seconds, but goes on for minutes before I kill it). I am checking all the hresults before this and they all succeed. However, if I put my VB6 project in debug mode, my c++ code proceeded just fine, i.e. no errors. It's the same project that created the dll used by ATL and everything is registered properly. Some other methods on this dll work properly (such as fetching the threadid) either way (debug and non-debug). Any ideas? Thanks On a related note, is it not possible to debug services in "service" mode? When I register it as a service it won't run since I think StartServiceCtrlDispatcher fails. Re: Help creating VB6 com objects from atl service nalenb18-Oct-04 17:24 nalenb 18-Oct-04 17:24  Well, upon further testing my code works just fine when the service is register and started, so I'm guessing the problem comes in when trying to run the service in debug mode in vs.net. Anyone have link on how to debug a service? It seems that just unregistering the service, compiling in debug mode and then running it doesn't work correctly. I haven't fully traced into the ATL code yet though. database Anonymous18-Oct-04 1:11 Anonymous 18-Oct-04 1:11  could anyone give me information on: how to access database in ATL (using visual c++)? thanks Re: database Nemanja Trifunovic18-Oct-04 6:04 Nemanja Trifunovic 18-Oct-04 6:04  Take a look at OLEDB templates[^] My programming blahblahblah blog. If you ever find anything useful here, please let me know to remove it. Re: database bsunil_18519-Oct-04 0:12 bsunil_185 19-Oct-04 0:12  Thanks! but to use OLEDB: Do u need MFC support? I want something without MFC support. Re: database Nemanja Trifunovic19-Oct-04 5:05 Nemanja Trifunovic 19-Oct-04 5:05  Nope, you don't need MFC. BTW, there was a beginners' article for using OLEDB templates here on CP. Just search for OLEDB and I am sure you will find it. My programming blahblahblah blog. If you ever find anything useful here, please let me know to remove it. Re: database Lim Bio Liong18-Oct-04 21:15 Lim Bio Liong 18-Oct-04 21:15  Hello, ATL does not provide any intrinsic database access functionalities. You acess any database system of your choice using the APIs provided by that database system. However, if you want to access databases using ADO (Active Database Objects) (which is COM-based), you would import the Type Library of ADO (using the #import statement) and then connect to the database of your choice via the appropriate connection string. Note that your database system must also support ADO (most do anyway). Examples of database systems that support ADO are : MS Access, Oracle, SQL Server, Sybase. Regards, Bio. Re: database bsunil_18519-Oct-04 0:08 bsunil_185 19-Oct-04 0:08  Thanks for the info. I will look for ADO, and if I could not find anything useful I will contact u. How to Craete Event ThatsAlok16-Oct-04 3:58 ThatsAlok 16-Oct-04 3:58  I am new to COM/ATL,i have very beginner question, i want to know ho wto create events and raise that event in From ATL DLL. thanks for every Suggestion ----------------------------- "I Think It Will Help" ----------------------------- Alok Gupta visit me at http://www.thisisalok.tk Re: How to Craete Event ThatsAlok29-Oct-04 20:44 ThatsAlok 29-Oct-04 20:44  Yeah, Sorry i found it myself,as AtlCom wizard itslef Provide support for Event,you just mere have to Check the IConnectionPoint Box ,rets of thing will be handle by Wizard itself ----------------------------- "I Think It Will Help" ----------------------------- Alok Gupta visit me at http://www.thisisalok.tk How can we persist Custom Interfaces qur15-Oct-04 0:43 qur 15-Oct-04 0:43  I have develop a List view control. Control has propert Columns which implements the IColumns interface. Now i want to persist this property by including it in Prop map. Below is the code <br /> BEGIN_PROP_MAP(CGridAdv)<br /> PROP_ENTRY("Columns", 14, CLSID_ColumnsProp)<br /> END_PROP_MAP()<br /> After doing that control crashes whenever container try to dislay it. Can anyone tell me how to do that? thanks qur

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