Declare Serial Mfc
Describing a solution to allow namespaces, multiple inheritance, and serialization in an MFC program. MFC macros.DECLARE_SERIAL, DECLARE_MESSAGEMAP. DocClass Implement Serial. I proposed the use of DECLARE_SERIAL and SerializeClass. Don't look at DECLARE_SERIAL in MFC.
If > there's an error in the file (e.g. It's really something else, not > your file), SerializeClass throws an exception with > CArchiveException::badClass. That gets nicely reported in document's > ReportStoreLoadException. RB replied Well actually about the same time you showed it to me I got out an old book I had bought used quite a while ago 'MFC Programming by Alan Feuer' and I looked thru it and found the same idea (creating the doc derivative with the Serial macros ). But other than you and this one book, I have not seen it elsewhere searching on the net or other MFC books I have. >> RB previously wrote >> IMPLEMENT_SERIAL(CFileHandlingDoc, CDocument, 0) > Goran wrote >Wow, wow, not like that!
Our product had been used by hundreds of top companies around the world! '100% source code provided! Free you from not daring to use components because of unable to master the key technology of components!' VC++ Article: DECLARE_SERIAL and IMPLEMENT_SERIAL and serialize data from or to disk.
Declare Serial Mfc
This means that the client application owns the main message pump, the idle loop and so on. If your MFC Extension DLL needs to maintain extra data for each application, you can derive a new class from CDynLinkLibrary and create it in the InitXxxDLL routine describe above. When running, the DLL can check the current application's list of CDynLinkLibrary objects to find the one for that particular MFC extension DLL. Using Resources in Your DLL Implementation As mentioned above, the default resource load will walk the list of CDynLinkLibrary objects looking for the first EXE or DLL that has the requested resource. All MFC APIs as well as all the internal code uses AfxFindResourceHandle to walk the resource list to find any resource, no matter where it may reside. If you wish to only load resources from a specific place, use the APIs AfxGetResourceHandle and AfxSetResourceHandle to save the old handle and set the new handle.
After changing the DTR to high the communication was working. No more spurious events anymore. Problem solved! (I don't understand at all, why a wrong DTR signal leads to spurious events, but anyways.) There are different appraoches to change the DTR settings. Please look into the following thread for more information: As far as I know there is no standard available how the DTR line has to be set by default. But I found some hints saying 'conventionally the DTR is set to high if the port is opened'.
– Sep 28 '17 at 13:07 •.
• Be sure to use the DECLARE_SERIAL macro inside.
The term duplicate has no notion of time. The fact that a question that was asked later turned this question into a duplicate doesn't make this question any less of a duplicate. I marked this as a duplicate of another question, because that other question is more to the point, and offers a more detailed explanation. Marking a question as a duplicate helps future visitors to see, that there is another Q&A that's largely identical, but may provide more information. It is not meant as a tool to communicate the order of historic events.
If you have tried exporting C++ classes with a.DEF file before, you may want to develop a tool to generate this list automatically. This can be done using a two-stage link process. Link your DLL once with no exports, and allow the linker to generate a.MAP file. The.MAP file can be used to generate a list of functions that should be exported, so with some rearranging, it can be used to generate your EXPORT entries for your.DEF file. The export list for MFCxx.DLL and the OLE and Database MFC extension DLLs, several thousand in number, was generated with such a process (although it is not completely automatic and requires some hand tuning every once in a while). CDynLinkLibrary An MFC Extension DLL does not have a CWinApp-derived object of its own; instead it must work with the CWinApp-derived object of the client application.
So in my case templated CDlgTestDoc or templated new'superdoc'class containing CDlgTestDoc? That is a good question. I still haven't come across any info on how to create template classes in VC other than using the templates that are provided with MFC. However, if it is not going to be (ptr)array of (ptr)array then it probably does not need to be templated. Sun, 06 Feb 2005 04:33:29 GMT Page 1 of 1 [ 5 post ].
But what about template classes that are not dialogs, so I want to reformulate my question: How to use macros like DECLARE_SERIAL and IMPLEMENT_SERIAL with c++ template classes derived from CObject? Giovanni Dicanio 4/9/2009, 3:19 น. Elizabeta ha scritto: > Ok lets say that for Dialog template classes I can do your suggestion, thanks.
If a non-trivial constructor is explicitly implemented by the class, it must also explicitly implement the default constructor as well. The default constructor can be added to the class's private or protected member sections to prevent it from being called from outside the class implementation.
The external name is the identifier exposed to other applications. Client applications use the external name to request an object of this class from an automation server. The OLE class ID is a unique 128-bit identifier for the object. It consists of one long, two WORDs, and eight BYTEs, as represented by l, w1, w2, and b1 through b8 in the syntax description.
It is not easy to recover from this exception. You can use VERSIONABLE_SCHEMA combined with (bitwise OR) your schema version to keep this exception from being thrown. By using VERSIONABLE_SCHEMA, your code can take the appropriate action in its Serialize function by checking the return value from.
Can I use the Overalapped.cpp example to wait for multiple objects using one event for overlapped IO (as in the example) and another to trigger a message write? Should both calls to Serial::Read() and Serial::Write() be made without passing in an OVERLAPPED structure?
How the MFCxx.DLL Is Implemented The following section describes how the MFC DLL (MFCxx.DLL and MFCxxD.DLL) is implemented. Understanding the details here are also not important if all you want to do is use the MFC DLL with your application. The details here are not essential for understanding how to write an MFC extension DLL, but understanding this implementation may help you write your own DLL. Implementation Overview The MFC DLL is really a special case of an MFC Extension DLL as described above. It has a very large number of exports for a large number of classes. There are a few additional things we do in the MFC DLL that make it even more special than a regular MFC extension DLL.
And that makes your question incredibly stupid! They exist because something happen during their creation. So, once again, forgot serialization. It is a problem that requires C++ level 4 comprehension, while yours is not more than 2.
By setting the required compiler flags, the MFC headers determine at link time which library the application should link with. • To run the executable, MFCxx.DLL must be on the path or in the Windows system directory. Building with the Development Environment If you are using the internal makefile with most of the standard defaults, you can easily change the project to build the DLL version. The following step assumes you have a correctly functioning MFC application linked with NAFXCWD.LIB (for debug) and NAFXCW.LIB (for retail) and you want to convert it to use the shared version of the MFC library. You are running the Visual C++ environment and have an internal project file.
By using a shared DLL for memory allocation, the MFC DLLs can allocate memory that is later freed by the application or vice versa. Because both the application and the DLL must use the same allocator, you should not override the C++ global operator new or operator delete.
In one system, we wrote a tape-copy program that took in tapes in the old schema and wrote new tapes in the new schema. At General Motors, a schema conversion involved three days' of runtime on an IBM 360/75.
Obvious downside is that if you subsequently change class name, loading of old files will fail. So clearly, you need to keep that name, and serialization code, for as long as you want to read said old files. The document name is a sticky point, because it's at the very beginning of the file. If you go with Doc.SerializeClass, and you do end up wanting to change doc name, find me on the internet ( this newsgroup will be dead by then;-) ), we can work it out +/- easily. Note that this goes for every object saved with SerializeClass (including using operators >> /.
Data structures were 2-3 levels deep and very complex. That doesn't matter. You have two choices: either you treat 'substructure' as a full-blown serializable class, in which case you have schema version an' all^^^, either you don't, in which case you can (well, have to) pass 'parent' structure schema version to serialization of those.
Pros and Cons Why should you use the shared version of MFC • Using the shared library can result in smaller applications (a minimal application that uses most of the MFC library is less than 10K). • The shared version of MFC supports MFC Extension DLLs and regular MFC DLLs. • Building an application that uses the shared MFC libraries is faster than building a statically linked MFC application because it is not necessary to link MFC itself. This is especially true in DEBUG builds where the linker must compact the debug information — by linking with a DLL that already contains the debug information, there is less debug information to compact within your application. Why should you not use the shared version of MFC: • Shipping an application that uses the shared library requires that you ship the MFCxx.DLL (and others) library with your program. MFCxx.DLL is freely redistributable like many DLLs, but you still must install the DLL in your SETUP program. In addition, you must ship the MSVCRTxx.DLL, which contains the C-runtime library which is used both by your program and the MFC DLLs themselves.
It wouldn't make sense to serialize a dialog. Nor does it make much sense to have a dialog class created by a template. If you need some kind of templating, it most likely applies to data *within* the dialog, and therefore you should create a templated class to hold your data. I do not believe you can derive a template class from CObject, because of how the macros work. You did not say which version of VS you are using.
Note If you forget to define a constructor with no arguments in a class that uses the DECLARE_SERIAL and IMPLEMENT_SERIAL macros, you will get a 'no default constructor available' compiler warning on the line where the IMPLEMENT_SERIAL macro is used. Using the IMPLEMENT_SERIAL Macro in the Implementation File The IMPLEMENT_SERIAL macro is used to define the various functions needed when you derive a serializable class from CObject. You use this macro in the implementation file (.CPP) for your class. The first two arguments to the macro are the name of the class and the name of its immediate base class. The third argument to this macro is a schema number. The schema number is essentially a version number for objects of the class. Use an integer greater than or equal to 0 for the schema number.
Building with NMAKE If you are using the external makefile feature of the Visual C++, or are using NMAKE directly, you will have to edit your makefile to support compiler and linker options Required compiler flags: • /D_AFXDLL /MD /D_AFXDLL The standard MFC headers need this symbol to be defined: • /MD The application must use the DLL version of the C run-time library All other compiler flags follow the MFC defaults (for example, _DEBUG for debug). Edit the linker list of libraries. Change NAFXCWD.LIB to MFCxxD.LIB and change NAFXCW.LIB to MFCxx.LIB. Replace LIBC.LIB with MSVCRT.LIB. As with any other MFC library it is important that MFCxxD.LIB is placed before any C-runtime libraries.
Win32s does not support per-process DLL data directly so the MFC DLL must use the thread-local storage (TLS) Win32 APIs to obtain process local data. Impact on Library Sources, Additional Files The impact of the _AFXDLL version on the normal MFC class library sources and headers is relatively minor. There is a special version file (AFXV_DLL.H) as well as an additional header file (AFXDLL_.H) included by the main AFXWIN.H header. The AFXDLL_.H header includes the CDynLinkLibrary class and other implementation details of both _AFXDLL applications and MFC Extension DLLs.
The AFXDLLX.H header is provided for building MFC Extension DLLs (see above for details). The regular sources to the MFC library in MFC SRC have some additional conditional code under the _AFXDLL #ifdef. An additional source file (DLLINIT.CPP) contains the extra DLL initialization code and other glue for the shared version of MFC. In order to build the shared version of MFC, additional files are provided.
VC++ Article: DECLARE_SERIAL and IMPLEMENT_SERIAL and serialize data from or to disk. Introduction This article will show you how you can serialize data to disk and retrieve it again in non doc/view architecture projects. Just follow the steps outlined. Steps to follow • Create a normal project as you usually do. • Add the class which you would use to serialize the data. It might contain just normal variables or collection classes or any kind of data that you want to store.
TN033: DLL Version of MFC • • 27 minutes to read • Contributors • • • • • • In this article This note describes how you can use the MFCxx.DLL and MFCxxD.DLL (where x is the MFC version number) shared dynamic link libraries with MFC applications and MFC extension DLLs. For more information about regular MFC DLLs, see. This technical note covers three aspects of DLLs. The last two are for the more advanced users: • • • If you are interested in building a DLL using MFC that can be used with non-MFC applications (this is called a regular MFC DLL), refer to. Overview of MFCxx.DLL Support: Terminology and Files Regular MFC DLL: You use a regular MFC DLL to build a stand-alone DLL using some of the MFC classes.
Again, if you modify the MFC source code to produce a custom version of the MFC DLL, use a different name (and preferably one without 'MFC' in the name). See also Feedback. Bone thugs n harmony crossroads mp3 downloads.
On Jun 21, 12:01 am, Joseph M. Newcomer wrote: > In a sane worled, there would be SerializeIn(CArchive & ar) and SerializeOut(CArchive & > ar). And the stupid IsStoring method would not have to exist. MFC is the only serialization scheme that dumps load and store code in one function with an 'if storing store; else load'.
RB replied Hey guy, thanks for replying. Yes I understand that the document doesn't necessarily 'need' the Serial macro to write to file, but I couldn't understand why MFC would want to short the full capability of the schema in the doc. Or at least say why they did not.
Be sure to restore the old resource handle before you return to the client application. The sample TESTDLL2 uses this approach for explicitly loading a menu. Walking the list has the disadvantages that it is slightly slower and requires managing resource ID ranges. It has the advantage that a client application that links to several MFC extension DLLs can use any DLL-provided resource without having to specify the DLL instance handle.
MFC serialization and other serialization schemes use class name to identify the class in the saved stream. This is quite reasonable - you want to store and load an object whose class is known at runtime only. How do you do that? Save/load some sort of class marker. What should that marker be? Class name is simplest possible and quite obvious answer.
The same rules apply to the rest of the C run-time memory allocation routines (such as malloc, realloc, free, and others). Ordinals and class __declspec(dllexport) and DLL naming We do not use the class __declspec(dllexport) functionality of the C++ compiler. Instead, a list of exports is included with the class library sources (MFCxx.DEF and MFCxxD.DEF).
A derived class of CDynLinkLibrary may be used if per-application data must be maintained by the MFC extension DLL. These considerations are described in more detail below. You should also refer to the MFC Advanced Concepts sample since it illustrates: • Building an application using the shared libraries. (DLLHUSK.EXE is an MFC application that dynamically links to the MFC libraries as well as other DLLs.) • Building an MFC Extension DLL. (Note the special flags such as _AFXEXT that are used in building an MFC extension DLL) • Two examples of MFC Extension DLLs. One shows the basic structure of an MFC Extension DLL with limited exports (TESTDLL1) and the other shows exporting an entire class interface (TESTDLL2).
Enables dynamic creation and access to run-time class information (must be used in the class declaration). Enables serialization and access to run-time class information (must be used in the class declaration). Enables access to run-time class information (must be used in the class implementation). Enables dynamic creation and access to run-time information (must be used in the class implementation). Permits serialization and access to run-time class information (must be used in the class implementation). Returns the CRuntimeClass structure that corresponds to the named class. OLE frequently requires the dynamic creation of objects at run time.
>>If your dialog is used to entry/show some data, you may want to create a >>C++ class derived from CObject that stores that data (e.g. A CPerson, >>with name, surname, address, etc.), and use DECLARE_SERIAL and >>IMPLEMENT_SERIAL on this non-GUI class. Ok lets say that for Dialog template classes I can do your suggestion, thanks.
This is the new DLL support added in MFC 2.0. The MFC library itself is in a number of DLLs (described below) and a client application or DLL dynamically links the DLLs that it requires. Interfaces across the application/DLL boundary are C++/MFC class interfaces. The client application MUST be an MFC application. This supports all MFC 3.0 functionality (exception: UNICODE is not supported for the database classes). Note The MFCSxx[U][D].LIB libraries are used in conjunction with the MFC shared DLLs. These libraries contain code that must be statically linked to the application or DLL.
Document, view, and frame classes should support dynamic creation because the framework needs to create them dynamically. Add the DECLARE_DYNCREATE macro in the.h module for the class, then include that module in all.cpp modules that need access to objects of this class. If DECLARE_DYNCREATE is included in the class declaration, then IMPLEMENT_DYNCREATE must be included in the class implementation. For more information on the DECLARE_DYNCREATE macro, see.
Mostly, they grimace and say 'We should have listened, but now we're stuck with this.' And sometimes they scrap the whole thing. It is far easier to manage schema evolution with XML. That's why it is all I have used for the last ten years, and before that, I used text files that looked a lot like a very limited subset of XML.