I have the following files for a embryonic keyboard hook on windows

lib/Kbh.pm

package Kbh;
our $VERSION = '0.01';
require XSLoader;
XSLoader::load('Kbh', $VERSION);
sub process_key {
    print "process_key in perl\n";
    
}
1;
[download]

Makefile.pl

use ExtUtils::MakeMaker;
WriteMakefile (
    NAME => 'Kbh',
    VERSION => '0.01',
    OBJECT => 'hook.o Kbh.o',
);
[download]

hook.h

LRESULT CALLBACK HookCallback(int nCode, WPARAM wParam, LPARAM lParam)
+;
void processKey();
void register_hook();
void unregister_hook();
void MsgLoop();
[download]

hook.c

#include <windows.h>
#include <WinAble.h>
#include "stdio.h"
#include "hook.h"

HHOOK hook;

LRESULT CALLBACK HookCallback( int nCode, WPARAM wParam, LPARAM lParam
+ ) {
    processKey();
    return CallNextHookEx( hook, nCode, wParam, lParam );
}

void processKey() {
    printf("processKey  in C\n");

}

void MsgLoop() {
    MSG message;

    while ( GetMessage( &message, NULL, 0, 0 ) ) {
        TranslateMessage(&message);
        DispatchMessage(&message);
    }
}

void register_hook() {
    HMODULE hMod = (HMODULE) GetModuleHandle(NULL);
    hook = SetWindowsHookEx( WH_KEYBOARD_LL, HookCallback, hMod, 0 );

}

void unregister_hook() {
    UnhookWindowsHookEx(hook);

}
[download]

and Kbh.xs

#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "ppport.h"
#include "hook.h"

MODULE = Kbh               PACKAGE = Kbh

PROTOTYPES: DISABLE

void
MsgLoop()

void
register_hook()

void
unregister_hook()

void 
processKey()

    INIT:
        int count;
    PPCODE:
        dSP;
        PUSHMARK(SP);
        count= call_pv("Kbh::process_key", G_DISCARD|G_NOARGS); 
    if (count != 0)
        croak("Big trouble\n");
[download]

When I run

Perl Makefile.pl
dmake
[download]

the things compile.

When I run runit.pl from the main directory(use ctrl+c to quit)

runit.pl

use lib qw(./lib ./blib/arch/auto/Kbh);
use Kbh;
Kbh::register_hook();
Kbh::MsgLoop;
Kbh::unregister_hook();
[download]

I see that the hook is installed, I get two messages from processKey when I hit a key, but I don't have msg "process_key from perl"

What am I missing ?

Thanks

François

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