dlls in delphi 1

[Iniquitous]

Is it possible to extract content information from a
non-delphi-generated DLL at runtime? I'm trying to
provide a feature in an app that modifies data stored
in a pre-existing DLL. The DLL is a C++ library.

Thanks

 

[michaenh]

Yes I think you can do that..

I think you can use Delphi to retrieve dll's informations which have been created in VB, C, C++, Centura and others. It also depends how the dll are created in those languages.

You got to know the structure, functions etc. in the existing dll. how it is build.

It is even better if you know also those languages ....

mha

 

[ppc386]

This might help...

http://www.blueorbsoft.com/CodeTips/DelphiCodeTips2.html#ListDLLFunctions

 

[michaenh]

Thanks ppc386

I will also take a look at that!

Many thanks.

 

[michaenh]

I got a look at ListDllFunctions... well.. its ok to get a list of functions exports, but you should know parameters of the function also. As my opinion you should have all informations about that dll function if you are trying to use it.

I will give ppc386 a star for this link site:

http://www.blueorbsoft.com/CodeTips/

many great functions and help

mha

 

[michaenh]

Sorry about last link..

here is the link:

http://www.blueorbsoft.com/CodeTips/DelphiCodeTips1.html

mha

 

[RobertMarquardt]

Have a look at the Jedi Code Library

http://sourceforge.net/projects/jcl

It contains a unit to access the PE format of an EXE or DLL and a sample app PEViewer. Gives you all ever wanted to know about a DLL.

If you want to access global variables in a DLL (read AND write!) then get ModuleLoader.pas from

http://delphi-jedi.org/APILIBRARY

It contains some helper functions for that (Delphi AND Kylix!).

 

[michaenh]

Cool..

I will take a look at it soon...

thanks..

mha

 

[JohnAtFp]

Hello

Can anyone show me how to call a VB Dll in Delphi?

Thanks

 

[richardchaven]

JohnAtFp (Programmer) Jun 10, 2003
Hello

Can anyone show me how to call a VB Dll in Delphi?

Thanks


I think this should be a new question. But the answer is: the same way you would call any other DLL (look in the Help and ask a new Question if that is not enough).

Cheers

 

[KempCGDR]

Actually, it isn't. VB creates 'ActiveX DLLs' that aren't really proper DLLs at all, it's harder than it should be to call them from Delphi. I think there's a few threads on here about it, a quick search should find them.