ATL / WTL / STL

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Re: Help Me... atlctrls.h Compile Error... Michael P Butler6-Jul-04 9:47 Michael P Butler 6-Jul-04 9:47  Jörgen Sigvardsson wrote: Hmmm.. can't it be a too low value on #define WIN32_VERSION (or whatever that define is called)? Having look through the commctrl.h header, it doesn't appear to be a factor. But then Microsoft Headers aren't the best layed out in the world. I may have a play when I'm on a machine with WTL installed, but I've not had this problem in the past. Michael CP Blog [^] Re: Help Me... atlctrls.h Compile Error... _oti15-Jul-04 12:50 _oti 15-Jul-04 12:50  The problem is (obviously) that ImageList_Read and ImageList_Write are not defined. The reason they're not defined because __IStream_INTERFACE_DEFINED__ is not defined. This is not defined because ObjIdl.h is not included. ObjIdl.h contains definitions for IStream, which is what the ImageLists are serialised to/from. There may be some issues with the point at which you include the file, and you may have to a #undef _INC_WINDOWS at some point. There are foggy wisps of memory regarding this, but I'm not sure if it applies to this problem. Hope this helps,     Phil -- All things considered, you can't really consider all things ... CStatic text and icon (bitmap) without background Ajnstajn6-Jul-04 1:00 Ajnstajn 6-Jul-04 1:00  Hi, 1. I have to create a CStatic text and I need it to be without background. How can I do it? Can u write a sample code as simple as you can, please? 2. I have to create a CStatic icon (bitmap) and I need it to be without background. How can I do it? Can u write a sample code as simple as you can, please? Answer this as fast as you can Thank you veeeeeeeeeerrrrrrrrrrrryyyyyyyyyyy much Greatfull, Ajnstajn Re: CStatic text and icon (bitmap) without background Alexandru Savescu13-Jul-04 1:59 Alexandru Savescu 13-Jul-04 1:59  Bad forum! Best regards, Alexandru Savescu P.S. Interested in art? Visit this! [wtl] CDialogImp that uses multiple dialogs? Tommy2k4-Jul-04 8:02 Tommy2k 4-Jul-04 8:02  How can I make my app just multiple dialogs instead of just the one that is defined in enum { IDD = * } ? I want to make it so that the window (the displayed dialog ) changes when you press a button in the toolbar.... Any help is very welcome Re: [wtl] CDialogImp that uses multiple dialogs? Michael P Butler6-Jul-04 2:08 Michael P Butler 6-Jul-04 2:08  You'll need to create a seperate CDialogImpl derived class for each dialog and then call them using the DoModal function, or hide the current window and show the new dialog. Michael CP Blog [^] How do I implement an interface in ATL Field Zhang3-Jul-04 23:15 Field Zhang 3-Jul-04 23:15  Please help me. Let's say we have an COM interface IAppInterface from another application named App. What I want to do is to create my COM class and implements the IAppInterface. So I created a new ATL project MyObject, added a simple ATL object, and chose "Implement interface" from the menu. But after building this project, I cannot see IAppInterface from MyObject. What's wrong? I know I should do some thing in the .idl file. What should I do? By the way, I'm using Visual Studio .NET 2003. Thanks. import new type in ATL server Anonymous30-Jun-04 5:36 Anonymous 30-Jun-04 5:36  Hi, I would need a small help. I have developed a static C++ library, in which a class APDU is defined. Now I am developing an in-process server ATL whose class of implementation will have to contain as variable member an object APDU. Accordingly I would like, that the interfaces (what I am creating with the wizard) they accepted as parameter an object APDU. EXAMPLE (We suppose that my server ATL has to print the content of an APDU) I create my server ATL (step 1)File--> New--> Project--> ATL COM App Wizard--> project name=server (step 2) Server Type=DLL I insert a new object ATL Insert--> New ATL Object--> Simple Object--> Short Name = example To this point I want to add a type APDU property to the file idl Right mouse button-->Add Property How do I do to make APDU appear the type in the curtain menu that show the possible types?? Thanks Anthony Re: import new type in ATL server Jörgen Sigvardsson1-Jul-04 11:24 Jörgen Sigvardsson 1-Jul-04 11:24  > How do I do to make APDU appear the type in the curtain menu that show the possible types?? You don't. Just type your type. All you have to make sure is that the IDL compiler recognizes your type. May or may not be easy. -- Ich bin Joachim von Hassel, und ich bin Pilot der Bundeswehr. Welle: Erdball - F104-G Starfighter BSTR returns invalid characters when multiple event sinks are used Aby Philip28-Jun-04 20:06 Aby Philip 28-Jun-04 20:06  Hi I have a component implementing a proprietary protocol (say, Protocol.dll)and does the communciation over serial port. I have defined ATL objects for each type of packet, and nearly all has a property called "description" which returns a BSTR. One ATL object encapsulates the serial communication. So I can set the baud rate, port number etc. A connection point event is defined corresponding to each packet that may arrive to the PC (from the device). Say ProtocolPkt1, ProtocolPkt2, ProtocolPkt3 etc. Now we typically use 2 serial ports. One that does proper protocol communciation and another that dumps trace staements. To take care of the trace statements I have one event defined (LogData) in the same event interface described above. I have an application (say Mainwindow.exe) that uses the above component, connects to both the ports and has separate event sinks to handle the 2 ports separately. The protocol data and the log data coming from the 2 ports are to be shown in separate windows. Whenever an event notifies that log data is received it is simply dumped in a window. Whenever any event notifying any of the protocol packets is received, the corresponding packet is created from the bytes received in the event, interpreted and displayed. Now onto the problem. When some protocol packets are received, the description property has to be called. When both the ports are connected the log data comes fine. But when the description property of say ProtocolPkt1 event is called, the BSTR returned is prefixed with some log string that came in the LogData event. Further the application displays a crash when it is closed. Some more observations. 1. This does not happen when the BSTR returned is very short. Typically only when the string returned is long and computed in some for loop, does this corruption occur. 2. This does not happen when I use the debug version of Protocol.dll. I hope I have made myself clear. If any information is required please let me know. Any pointers that can help me proceed would be greatly appreaciated Thanks aby Re: BSTR returns invalid characters when multiple event sinks are used palbano29-Jun-04 13:53 palbano 29-Jun-04 13:53  >> 2. This does not happen when I use the debug version of Protocol.dll. Have you tried looking at this article Surviving the Release Version? "No matter where you go, there your are." - Buckaroo Banzai -pete Re: BSTR returns invalid characters when multiple event sinks are used vprashu1-Jul-04 9:05 vprashu 1-Jul-04 9:05  Make sure that the code that fires the event manages the life time of the BSTR. I suspect that the first client is releasing the BSTR and hence ur second client sees garbage. For events and BSTR the caller allocates and frees the bstr. if u are using _bstr_t always pass a copy to the event( bstrVar.copy()) Hope this helps.. prashu Re: BSTR returns invalid characters when multiple event sinks are used Jörgen Sigvardsson1-Jul-04 11:31 Jörgen Sigvardsson 1-Jul-04 11:31  Hmm.. never send a copy of a BSTR to a COM method. That means that the method is responsible for cleaning up the string. This however is against COM rules, as [in] parameters MUST be managed by the caller. If the string has to be marshalled through the method call, then the string passed in will be lost (memory leak), and the callee will free a bstr which it does not own (the marshaller owns it). Thus, if you are using a _bstr_t or a CComBSTR, pass the BSTR pointer (or adress of if passing as an [out] argument) managed by these classes. [in] parameters are managed by called [out] parameters are allocated by callee, and passed for ownership to caller -- Ich bin Joachim von Hassel, und ich bin Pilot der Bundeswehr. Welle: Erdball - F104-G Starfighter Web browser controls in vs.net Ram. Sundar28-Jun-04 6:23 Ram. Sundar 28-Jun-04 6:23  Hi! I recently upgraded from VC 6.0 to VS.net 2002. I am using WTL v7.0. I created a simple modal dialog application and added a web browser control to it. The compilation was successful but the application refuses to create a dialog. Can anyone tell me what I should do to get my app up and running? After this happened, I created a similar project in VC 6.0 and it seems to work well there. When I open the same project (that I created in VC 6.0) in vs.net 2002 and convert it to VC 7.0 project and compile it, I get a problem hRes = _Module.Init(NULL, hInstance); I replaced this piece of code with hRes = _Module.Init(NULL, hInstance, &LIBID_ATLLib); I presume this is because of some ATL incompatibility?! Can anyone please help me with this? Thanks! Ram How to debug asp component? wood27-Jun-04 23:25 wood 27-Jun-04 23:25  Hi,erveryone, I don't know how to debug my asp component,Can you help me ?Thanks! Re: How to debug asp component? Jaime Stuardo30-Jun-04 5:58 Jaime Stuardo 30-Jun-04 5:58  You need to register the DLL in MTS or Component Services first. I will assume you are in Windows 2000/XP so I'll refer to those. Using MTS, the procedure is analogous. 1.- In Component Services, right click on the Application containing your component. Click properties. 2.- Copy the Application ID to clipboard 3.- In Visual C++ with your component project opened. Go to Project Settings. 4.- Be sure it is selected Debug configuration. Go to Debug Tab. 5.- Under "Executable for debug session:" write: C:\WINNT\system32\DLLHOST.EXE (obviously the path should be the path where DLLHOST.EXE file is in your system) 6.- Under "Program arguments:" write: /ProcessId:{the application ID you previously copied to clipboard} 7.- Now place a breakpoint where you want to start debugging 8.- Run the component (you will be warned that DLLHOST.EXE doesn't have debug information... just click OK) 9.- Run your ASP Page. When the breakpoint is reached, Visual C++ IDE will be activated for you to continue debugging your component as any Visual C++ program. 10.- If you make changes to your component, you may need to shutdown the component services Application before you can debug it again. I hope this helps Jaime Exceptions raised while CoCreateInstance Anonymous24-Jun-04 23:46 Anonymous 24-Jun-04 23:46  Hi, I am developing multithreading COM EXE server. In one of the methods I have called CoCreateInstance, which is made threadsafe by using CSingleLock(&(oneMutext)). After some time of server starts, this CoCreateInstance raises an exception. Also heap get corrupted at this instance. Can anybody help me in resolving this issue. Mandar Where can I find WTL reference? Ajnstajn23-Jun-04 0:15 Ajnstajn 23-Jun-04 0:15  Where can I find WTL reference to download it, including explanations of every member functions and variables for every class? Fore Thanks Ajnstajn Re: Where can I find WTL reference? palbano23-Jun-04 5:30 palbano 23-Jun-04 5:30  Does not exist. CodeProject may have the best collection of WTL stuff available. Search Articles for WTL. -pete Re: Where can I find WTL reference? Michael Dunn23-Jun-04 14:16 Michael Dunn 23-Jun-04 14:16  There is The WTL Documentation Project[^] which is just Doxygen-generated web pages, not explanations of the various classes/methods. I have a series of tutorials (starting here[^]) on using WTL. Check them out, they may be more helpful in getting you up and running with using WTL. --Mike-- Personal stuff:: Ericahist | Homepage Shareware stuff:: 1ClickPicGrabber | RightClick-Encrypt CP stuff:: CP SearchBar v2.0.2 | C++ Forum FAQ ---- Pinky, are you pondering what I'm pondering? I think so Brain, but if we shaved our heads, we'd look like weasels! Re: Can't get C++ ATL example to work...help? *Dreamz23-Jun-04 5:03 *Dreamz 23-Jun-04 5:03  I think m_spBrowser is in CScanCtl. Debugging CoTaskMemAlloc LasVegasGuy22-Jun-04 10:10 LasVegasGuy 22-Jun-04 10:10  Is there a way in ATL to debug CoTaskMemAlloc/Realloc calls and make sure that CoTaskMemFree was called for every allocation? thanks Man Learns from History that he never learns from History Re: Debugging CoTaskMemAlloc Michael Dunn23-Jun-04 14:03 Michael Dunn 23-Jun-04 14:03  Check out CoRegisterMallocSpy() and IMallocSpy, you can write a COM object and register it to be notified before and after allocs and frees. --Mike-- Personal stuff:: Ericahist | Homepage Shareware stuff:: 1ClickPicGrabber | RightClick-Encrypt CP stuff:: CP SearchBar v2.0.2 | C++ Forum FAQ ---- Pinky, are you pondering what I'm pondering? I think so Brain, but how will we fit the hamster inside the accordion? variably multidimensional arrays mickelliot22-Jun-04 6:43 mickelliot 22-Jun-04 6:43  Hi, I'm having some difficulty implementing a variably multidimensional array. Each dimension of the array needs to consist of exactly 23 elements, but the number of dimensions is user-specified. For example the user could request an five dimensional array int myArray[23][23][23][23][23]; or they could request an array of three dimensions int myArray[23][23][23]; I know you can use pointers to vary the number elements in each dimension, but is there a way to vary the number of dimensions itself? Thanks for any help you can give me, this is driving me mad! Cheers Mick Re: variably multidimensional arrays valikac22-Jun-04 19:12 valikac 22-Jun-04 19:12  What do you mean number of dimensions? The number of elements in each dimension point to other dimensions. Kuphryn

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