I'm trying to use the Win32::API module to call a simple test case DLL
(call it "addValues.dll"). My DLL has a function in it called addValues:
                                                                                
extern "C" __declspec(dllexport)
double addValues(double a, double b) {
double c;
c = a + b;
cout << a << " " << b << " " << c << endl;
return(c);
}
                                                                                
My perl script to call this looks like:
                                                                                
use Win32::API;
                                                                                
$num1 = $ARGV[0];
$num2 = $ARGV[1];
                                                                                
$myFunc =
Win32::API->new('addValues', 'double addValues(double a, double
b)');
$out = $myFunc->Call($num1, $num2);
print "$out";
                                                                                
When executing this, perl bombs at the Call line, giving me the "Perl
Command Line Interpreter has encountered a problem and needs to close.
We are sorry for the inconvenience" message.
                                                                                
Note that if I change my dll function to take no arguments (hard coding
a and b within the function) and return a double, I have no problems,
e.g.
                                                                                
$myFunc = Win32::API->new('addValues', 'double addValues()');
$out = $myFunc->Call();
                                                                                
I have also tried the alternative calling syntax:
                                                                                
$myFunc = Win32::API->new('addValues', 'addValues', 'DD', 'D')
                                                                                
with no success.