Hi all,
Using the Win32::API lib, I want to import the following C function:
USHORT RscIoCheck
(ULONG ulConnectionHandle
,ULONG ulSessionHandle
,SHORT *pnIoHandle
,VOID *pvReplyBuffer
,USHORT *puReplySize
);

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which is found in the "Rscw32.dll". To import it, I have the following script:
use Win32::API 0.40;

my $sFuncRscIoCheck = new Win32::API('Rscw32', 'RSCCHK', 'IIPPP', 'I')
+;

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When I use it, I call the function as follow:
my $sReturn;
my $sIoHandle = RSC_IO_NOWAITED;
my $sCheckAll = RSC_IO_CHECK_ALL;
$sReturn = $sFuncRscIoCheck->Call($sConnectionHandle,
                                  $sSessionHandle,
                                  $sCheckAll,
                                  $sReplyBuffer,
                                  $sReplySize);

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I'm expecting a return value of '17' but when I print the "$sReturn", I got '33685510'.

If I do the following:
my $sReturn = pack('S', 0);

$sReturn = $sFuncRscIoCheck->Call($sConnectionHandle,
                                  $sSessionHandle,
                                  $sCheckAll,<br>
                                  $sReplyBuffer,
                                  $sReplySize);

$sReturn = unpack('S', $sReturn);

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print "My Return is : $sReturn\n";

the "$sReturn" value is set to '13107' and this value can (and probably will) change if I reboot the PC.
Is it possible to handle the USHORT correctly with the Win32::API lib?
Any idea?
Thanks,
ptk

Note: Even if the return value is incorrect, the function seems to work!

Edit by BazB: add code tags.

In reply to Win32::API to import function by ptk

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