Re: Biometric scanner(Finger print reader) need help implementing in delphi.

I understand there is no .lib file.  There is a way to define the functions using the extern "c" delcaration to ensure the VC does NOT use the normal 'mangled' names.  That's the question I'm asking.
  ----- Original Message ----- 
  From: Oliver Schneider 
  To: [email protected] 
  Sent: Wednesday, March 01, 2006 6:32 PM
  Subject: Re: [Delphi-JEDI] Biometric scanner(Finger print reader) need help implementing in delphi.



  > Here is the VC 6 code I tried, and it didn't work.  
  > 
  > typedef VOID (*TGaugeCall)(PGAUGEHDR, int, UINT32); // function proto
  > typedef VOID (*TGaugeDraw)(HDC); // function proto
  > TGaugeCall GaugeCall = NULL; // function pointer
  > TGaugeDraw GaugeDraw = NULL; // function pointer
  > HMODULE MGaugeHandler = NULL;  // DLL handle
  > 
  > I understand that VC 6 does name mangling... so how do I write this so I
  > can use the EXTERN "C" definition and dynamically link to the library?
  > My C knowledge is quite a bit rusty, so forgive me if I'm asking for too
  > much.
  The problem is that you have no LIB for the DLL, because Delphi doesn't
  produce one (and Borland's LIBs seem anyway different from MS's). However,
  you can dynamically link to the DLL (GetProcAddress ...) or create a LIB - I
  believe MS's linker has an option for that.

  Cheers,

  Oliver

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