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I am trying to create an application in visual studio that will be able to access a .dll file that already exists. I need the application to call up routines. I also have a header file that already exists.
I have been researching on the internet and have found that I need to create a .lib file. Looking at similar questions on here I found a link: http://support.microsoft.com/kb/131313 I cannot however follow the directions.
The information in the link says to make a DEF file ( I read elsewhere that this needs to be compiled as a DLL with the same name, but not sure what that name is, the same name as the .dll file?). But I do not understand the first direction, to 'Use DUMPBIN /EXPORTS'. I then need to 'stub out' functions, and then something to do with .OBJ files (I do not know what these files are).
Are there any step-by-step directions, similar to the link above, that are easy to follow?
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A DLL is a library of functions that are shared among other executable programs. Just look in your windows/system32 directory and you will find dozens of them. When your program creates a DLL it also normally creates a lib file so that the application *.exe program can resolve symbols that are declared in the DLL.
LIB vs DLL LIB is a static library where functions and procedures can be placed and called as the application is being compiled. A DLL or Dynamic Link Library does the same function but is dynamic in a sense that the application can call these libraries during run-time and not during the compilation.
Yes, the Core and Utils code will be duplicated. Instead of building them as static libs you can build them as dlls and use anywhere.
To create a DLL project in Visual Studio 2019On the menu bar, choose File > New > Project to open the Create a New Project dialog box. At the top of the dialog, set Language to C++, set Platform to Windows, and set Project type to Library.
You're going to need Microsoft Visual C++ 2010 Express (or any other source of MSVC command line tools), and your DLL.
Steps:
dumpbin /EXPORTS yourfile.dll > yourfile.exportsyourfile.exports into a new yourfile.def file. Add a line with the word EXPORTS at the top of this file.VC\bin directory (the one where lib.exe and other compile tools reside).
vcvars32.bat lib /def:yourfile.def /out:yourfile.lib or for x64 builds
lib /def:yourfile.def /machine:x64 /out:yourfile64.lib You should get two files generated: yourfile.lib and yourfile.exp
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