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Hi,
I have Binary Data to be included in a DLL. The Tool I have developed to generate this data, currently creates a BYTE array in a CPP File. This File is subsequently compiled into an .obj File as part of the project, and linked in the normal way with the linker. The next step forward would be to have the Tool produce an obj file in the first place. Anyone any ideas how to do this? Microsoft maintains that .obj files are standard COFF Files. I know from experience that this is not strictly the case. In any case there is very little documentation about the further details, such as identification of sections of the Obj File, etc. I would need to produce a File that meets the minimum MS Linking Spec. There is only One 'C' linkable variable, the name of the array.
Has anyone any ideas?
Regards 
Bram van Kampen
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Hi,
Adding the file as a custom resource and then using FindResource set of api's to access it, does not fit your needs?
Regards,
Mauro.
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The format MS uses is standard indeeded, it is named PE (portable executable), and you can get whole documentation here[^]. It is made public to avoid penalties from antitrust because, if hided, it could be seen as an abuse.
It is based on COFF, and its almost the same, apart from the interpretation of location offsets that are different.
You can create a PE object header, include your data in an initialized data section and create a symbbol in relocation.. 
But if only need to access that data in the DLL the really easy solution is, as they already told you, to create a resource and use it.
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Hi everybody  !
I am looking for an automated tool or script that will take a huge Borland C++ buider project and convert it into Visual Studio .NET project. A full conversion is not necessary, rather a starting point for manual intervention.
So, after researches, i focused on the vcl conversion part to .Net, win api, so i want to know if is there a tool that can do this , at worst, just partially,
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There is no tool to do this. You're going to have to either write the tool yourself or just skip it and convert the code by hand.
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Hello Friends
I converted MFC application to 64 bit using VS 2013. My exe is working in Release build.But As I run in Debug Build,it pops up with Window error saying "The Application was unable to start correctly(0x0c000007b).Click OK to close the application."
After Google, I tried different methods As suggested [Copied mfc100.dll,mfc00u.dll,msvcp100.dll,msvcr100.dll,msvcr100_clr0400.dll] to System32 folder.
I installed vs2010,vs2013 redistributable package too bt no Luck.
Any Ideas?
Thanks & Regards
Yogesh Sikri
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Debug builds are not intended to be run on other machines than the development system. So try to start your program in the debugger of your VS. If that works, all is OK.
Debug builds are linked to special versions of the runtime DLLs which did not exist on machines that have no VS installed. While it would be possible to copy these special DLLs, you should know that you are not allowed to do so.
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I am running debug build on development machine only.Still no Luck.
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Check the debug output window to see when the error appears. You may set a breakpoint at your InitInstance method. If the error appears before that it may be some DLL that does not match. Does your application uses some self-build or other non-MS DLLs? If so ensure that these DLLs are present as 64-bit versions. Check also your debug project settings for those DDLs to ensure that there is no entry to an old one.
The MS / MFC specific debug DLLs should be already present on your system (they have the letter 'd' at the end of the name).
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Check if there is any manifest resource in the project and check that this resource also is updated for X64.
Fast test: exclude the manifest from project and recompile.
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no, there is no manifest resource.
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This error comes on 64bits OS's when the loader try to link a wrong DLL (typically a 32bits DLL in a 64bits executable).
Check again your project and verify that you are correctly linking to 64bits versions of all DLL's.
Maybe your program use a DLL built for 32bits. The linking could complete even with wrong import library, then the error is triggered at loading time.
The most common case is when a manifest is present in whichever library reporting X86 build, the loader, and this made me mad, testardly try to load 32bits version of commctl32.dll 
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Using Excel Automation in Visual Studio 2010 C++, how do I define a name? As a user of Excel, you can enter a name that then can be used in formulas to refer to a range of cells. The range changes as the user inserts columns or rows. My program has worked with various versions of Excel dating back to the early 2000’s. I have a bunch of classes derived from COleDispatchDriver: CXLApplication, CXLRange, CXLWorkbook, CXLWorkbooks, and CXLWorksheet that have many functions, but I have no documentation (anybody have any clues on where to find documentation?). Anyone know how to define a named range using functions of these classes (probably CXLRange)?
modified 5-Mar-15 3:02am.
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Where do these classes come from?
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These classes were generated years ago from the Excel type library using Class Wizard. I note that these classes can be generated using Class Wizard on Visual Studio 2010 as well: MFC Class Wizard->Add Class (arrow)->MFC Class from Typelib...->Add Class from Typelib Wizard->Available Type libraries: Microsoft Excel 15.0 Object Library<1.8>. Then you add the classes, using whatever names you want and the files are automatically generated. However, the classes in my legacy code are a bit different than later versions of Excel. Also if you know where to find documentation for these classes, it would be much appreciated.
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Sorry, but you will have to figure it out then. I have no idea what they do.
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Hi
I am using g++ to compile on a raspberry pi.
using the following the project compiles:
g++ -c file1.cpp file2.ccp .....filen.cpp
however using the following I get numerous messages as follows:
filen.cpp: (.text+0xb73c): undefined reference to `*******
etc etc etc
these functions are defined in a header file in each of the file*.cpp files thus:
#include "funcdefs.h"
this header file is located in the same directory as the *.cpp files
the header file was originally entitled FUNCDEFS.H but I changed the name to lower case funcdefs.h to stop the compiler complaining.
the funcdefs file contains the following code:
#if !defined(funcdefs_h)
#define funcdefs_h
extern double func1 ( double f ) ;
extern void func2 ( double *input ) ;
#endif
I have tried making the preprocessor directive in the funcdefs.h file lower case (didn't make any difference) and have checked the include path using -H and it seems to find the file but cannot get it to link.
Any ideas?
Thanks
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The error does not occur during compiling but during linking. It tells you that the final program did not contain the functions in one of the compiled files.
You must also add the source files with those functions to your project. So copy the source file(s) (e.g. funcdefs.cpp) to your directory and add them to the g++ build command.
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Thanks Jochen
I might not have given you enough information. The actual text of the linking error message is:
In function `process(int, char*, ControlData*, char*, char*)':
PROCESS.CPP: (.text+0x788): undefined reference to `readsig(MiscParams*, char*)'
PROCESS.CPP: (.text+0xaac): undefined reference to `sig_save(Signal*, char*)'
PROCESS.CPP: (.text+0xdd4): undefined reference to `display(Signal*, MiscParams*, int)'.............
......etc etc etc
so there are many undefined references to functions from within the function 'process' contained in PROCESS.CPP
however; all these functions are defined in funcdefs.h as follows:
extern int readsig ( MiscParams *misc , char *namelist , int *nsigs ,
Signal ***signals , char *error ) ;
etc etc etc
as I understand it, the various individual *.cpp files are referring to functions that are defined within funcdefs.h shouldn't these definitions be included from this file by the pre processor instruction and therefore be defined references?
Or are you saying that it is the function 'process' in PROCESS.CPP that is calling other undefined references? The very first such call is 'readsig' which is defined in functions.h
Or are you saying that I should just call functions.h functions.cpp?
This is driving me nuts so thanks for your help!
++++++++++EDIT+++++++++++
Jochen - I think I'm beginning to get your drift! The fundefs.h file only contains function prototypes not definitions
modified 4-Mar-15 5:19am.
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I just saw you edited your post and got it. But I will answer anyhow (I had already written this but the CP servers where unavailable for some minutes):
I suggest to read about definitions and declarations in C/C++ because these are often mixed up.
See the first answer of this Stackoverflow thread: http://stackoverflow.com/questions/1410563/what-is-the-difference-between-a-definition-and-a-declaration[^]
You have declarations for the functions in your header files. So the sources will compile.
But you don't have definitions for the functions in any of your source files. So the linkage will fail.
You must add the source files containing the definitions. For the readsig function this must be a source file containing:
int readsig ( MiscParams *misc , char *namelist , int *nsigs ,
Signal ***signals , char *error )
{
}
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You must include the library or object modules that contains the actual code of the missing functions. As Jochen already mentioned, these are linker errors, nothing to do with compiling or header files.
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class M
{
//variables
public:
protected:
private:
//functions
public:
M();
~M();
virtual int foo(int);
protected:
private:
M( const M &c );
M& operator=( const M &c );
int i, j;
}; //M
Thanks, any help as always is appreciated.
Cheers
Vaclav
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They are merely section markers, probably put in by some automatic code generator. They allow the developer to easily add properties and functions in the correct places.
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