Re: problem using delphi dll in vc++

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thank you all.....I found out there are something wrong about the
function.
So I just want to realize it by myself.Thank you all.


On 4月19日, 上午5时20分, Tamas Demjen <tdem...@xxxxxxxxxx> wrote:
Ryanivanka wrote:
------------------------in c++ .h-------------------------
extern "C" {
__declspec(dllimport) HMODULE __stdcall func1();
}
------------------------------------------------------------

-----------------------in delphi-----------------------------
function func1: dword; stdcall;
----------------------------------------------------------------

They look compatible.

I just don't understand how you were able to link a Delphi DLL
statically. Borland/CodeGear uses OMF-type LIB files, VC++ uses the COFF
format. They're not compatible. Not even for simple import libraries.

So you either have a bug in the Delphi function, or in the import
library. I recommend that you forget about that LIB, and just load the
DLL dynamically:

HINSTANCE dll = LoadLibrary("c:\\path\\to\\my.dll");
typedef HMODULE (__stdcall * PtrFunc1)();
PtrFunc1 func1 =
reinterpret_cast<PtrFunc1>(GetProcAddress(dll, "func1"));



...
// use func1 as if it was a regular C function
...
FreeLibrary(dll);

Of course you have to use GetProcAddress for all the other functions
that the DLL might export as well. It may be a little bit of an extra
work (lots of typing), but you can be 100% sure that the functions are
imported correctly.

I just don't know where your LIB file is coming from, it can't be coming
from Delphi. LIB and OBJ files are generally not portable enough.

Tom

.

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