Re: Help on Win32 API

On 06/20/2007 08:53 AM, jis wrote:
Hi,

I have a dll by name AduHid.dll.
There is a function with prototype

void * _stdcall OpenAduDeviceBySerialNumber(const char*
psSerialNUmber,unsigned long iTimeout);

I used the following perl code to call the above function

use Win32::API;
my $function = Win32::API->new(
'AduHid.dll','int OpenAduDeviceBySerialNumber(const
char* psSerialNUmber,unsigned long iTimeout)' );

my $return = $function->Call("A03744",0);

But i get an error
1. unknown parameter type const and unsigned
2. Argument A03744 isnt numeric in subroutine entry.

I tried removing const and unsigned.Then I got an error
"Modification of read only value attempted".

Where am i going wrong?
Please advise.

regards,
jis


I don't have access to a Windows computer, but I was able to download the CPAN source for Win32::API. Read the POD for Win32::API::Types. It says you should examine the __DATA__ section of Win32/API/Types.pm to see a list of supported types.

You might need to specify a prototype like this:

int OpenAduDeviceBySerialNumber(PCHAR psSerialNUmber, ULONG iTimeout)


I hope this helps some.
.

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