Select Code to Download

Select or download this

C:\_32\c>type double.h
double __declspec(dllexport) my_double(int);
C:\_32\c>

Select or download this

C:\_32\c>type double.c
#include "double.h"
...
       return (double) num;
}
C:\_32\c>

Select or download this

C:\_32\c>cl /Gz /LD double.c
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13.00.9466 for 
+80x86
...
   Creating library double.lib and object double.exp

C:\_32\c>

Select or download this

C:\_32\c>dumpbin /exports double.dll
Microsoft (R) COFF/PE Dumper Version 7.00.9466
...
        7000 .text

C:\_32\c>

Select or download this

C:\_32\c>type double.pl
use Win32::API;
...
$ret = $function->Call(123);
print $ret, "\n";
C:\_32\c>

Select or download this

C:\_32\c>perl double.pl
Can't call method "Call" on an undefined value at double.pl line 5.

C:\_32\c>

Select or download this

C:\_32\c>type double_test.c
#include <stdio.h>
...
    return 0;
}
C:\_32\c>

Select or download this

C:\_32\c>cl double_test.c double.lib
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13.00.9466 for 
+80x86
...
double_test.exe : fatal error LNK1120: 1 unresolved externals

C:\_32\c>

Select or download this

C:\_32\c>cl -c double.c
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13.00.9466 for 
+80x86
...
double.c

C:\_32\c>

Select or download this

C:\_32\c>cl double_test.c double.obj
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13.00.9466 for 
+80x86
...
   Creating library double_test.lib and object double_test.exp

C:\_32\c>

Select or download this

C:\_32\c>double_test.exe
123.000000

C:\_32\c>