C variable from delphi

[Hafedh TRIMECHE 1]

Hello,

 

Having a c module exporting a structured variable as:
 

typedef struct params{

  int p1;

  int p2;

} PARAMS;

and is exported as:

extern PARAMS params;

 

Please, how a function be called from Delphi to retrieve params?

 

Best regards.

 

[PeterBelow 238]

The Delphi program folder contains a console program named tdump.exe (and tdump64.exe for 64 bit executables) that you can use to examine the segments of the C DLL. Look for the exports table and check whether there is an entry for this params variable. If there is you can load the DLL from Delphi (LoadLibrary) and retrieve the address of this export via GetProcAddress, like for an exported function. Store the returned address into a variable of a suitably defined pointer type and you can access the value of the variable.