Borland declarations

[Edwin Knoppert]

Lately we had a topic how to use a PB dll using lib files in MS c++

I need a quick solution to implement this in Borland c5.

Please help me to convert this:

PB DLL exported function: (Note the byval)
Function MyFunction Alias "MyFunction"( ByVal hWnd As Long, Text As ASCIIZ ) Export As Long

VB: (using strptr)
Declare Function MyFunction Lib "Mydll.dll"( ByVal hWnd As Long, ByVal Text As String ) As Long

Borland: ??
I prefer an easy to maintain include file.
Lib files if there's no other way.
NO special statements in the PB function please.
No name mangling.

Thanks,



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[Daniel Corbier]

I have a component which exports PowerBASIC functions, and people
are using it with both Borland C++ Builder and Borland C++ 5.x
(non-builder). You may want to check out my .h and .cpp files.

In your case, basically you can declare the following, in
the .h file:

HINSTANCE hDLL;
typedef long (CALLBACK* MYFUNCTION)(long, const char*);
MYFUNCTION MyFunction;

and then perhaps in a class constructor:

hDLL = LoadLibrary("Mydll.dll");
MyFunction = (MYFUNCTION)GetProcAddress(hDLL,"MyFunction");

In the deconstructor routine, be sure to include

FreeLibrary(hDLL);

In my .h file, I have a section of code that is separated between
Borland C++ and MS C++. But that's only because MS C++ doesn't
support Extended Precision and Borland C++ does. Otherwise, the
code is similar for the two.

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Daniel Corbier
UCalc Fast Math Parser
http://www.ucalc.com

[Edwin Knoppert]

Thanks!

It's working (at last)

!

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[email protected]