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C DLL in Delphi 2

I wrote a DLL in MS Visual C++, and I want to call it from a Delphi 2 app. How do I do this? Here is my declaration of the function in C++:

BOOL UnpackFile(const char* Resource, const char* InFile)

scrapdog

An example:

function UnpackFile; external 'filename.dll'; cdecl;

var
Resource :PChar;
InFile :PChar;
x :boolean;
begin
x := UnpackFile(Resource, Infile);
end.

I don't know for *sure* if this works, but try it...

Madshi

I never did this, but don't you have to include the parameters in the UnpackFile pascal definition? Otherwise the compiler won't compile this, or am I wrong?

function UnpackFile(resource, inFile: pchar) : bool; cdecl;

Then I'm not sure about the "cdecl". Is it this way? Why have the winAPI "stdcall"? Windows is written in C(++), too. But I don't know it...

Regards, Madshi.

Madshi

Ooops. Forgotten the "external":

function UnpackFile(resource, inFile: pchar) : bool; cdecl;
external 'filename.dll" name "UnpackFile";

or

function UnpackFile(resource, inFile: pchar) : bool; cdecl;
external 'filename.dll" index CUnpackFileExportIndex;

scrapdog

stdcall is used for API functions, cdecl is used for DLLs.

I believe the only difference is that cdecl doesn't remove parameters from the stack. And as far as a parameter list, I think you're right.

I posted the above comment before I realized that this is a duplicate question...I think the way shown in the other one is correct (it is in the locked section).

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philipleighs

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