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package Win32::API::Interface;
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13881
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use strict;
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54
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use vars qw/$VERSION/;
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97
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$VERSION = '0.0001_01';
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use Win32::API ();
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0
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9
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10
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=head1 NAME
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Win32::API::Interface - Object oriented interface generation
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=head1 SYNOPSIS
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package MyModule;
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use base qw/Win32::API::Interface/;
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__PACKAGE__->generate( "kernel32", "GetCurrentProcessId", "", "N" );
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__PACKAGE__->generate( "kernel32", "GetCurrentProcessId", "", "N", 'get_pid' );
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1;
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my $obj = MyModule->new );
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print "PID: " . $obj->GetCurrentProcessId . "\n";
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print "PID: " . $obj->get_pid . "\n";
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=head1 DESCRIPTION
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32
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This module provides functions for generating a object oriented interface to
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Win32 API functions.
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=head1 METHODS
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=head2 new
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my $obj = Module->new;
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Win32::API::Interface provides a basic constructor. It generates a
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hash-based object and can be called as either a class method or an object
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method.
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=cut
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sub new {
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my $proto = shift;
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my $class = ref $proto || $proto;
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return bless {}, $class;
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}
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55
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=head2 generate
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__PACKAGE__->generate( "kernel32", "GetCurrentProcessId", "", "N" );
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This generates a method called I which is exported
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by I. It does not take any input parameters but returns a value
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of type I.
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__PACKAGE__->generate( "kernel32", "GetCurrentProcessId", "", "N", "get_pid" );
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Actually the same as above, but this will generate a method called I.
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This is useful if you do not want to rely on the API function name.
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68
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__PACKAGE__->generate(
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[ "kernel32", "GetTempPath", "NP", "N" ],
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[ "kernel32", "GetCurrentProcessId", "", "N", "get_pid" ],
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);
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73
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You may call I passing an array of array references.
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75
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__PACKAGE__->generate( {
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"kernel32" => [
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[ "GetTempPath", "NP", "N" ],
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[ "GetCurrentProcessId", "", "N", "get_pid" ],
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],
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"user32" => [
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[ "GetCursorPos", "P", "I"]
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],
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} );
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85
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=cut
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87
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{
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no strict 'refs';
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90
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sub generate {
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my $self = shift;
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93
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if ( 'ARRAY' eq ref $_[0] ) {
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foreach my $args (@_) {
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$self->generate( @{$args} );
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}
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}
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elsif ( 'HASH' eq ref $_[0] ) {
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while ( my ( $library, $params ) = each %{ $_[0] } ) {
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foreach my $args ( @{$params} ) {
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$self->generate( $library, @{$args} );
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}
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}
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}
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else {
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107
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my ( $library, $name, $params, $retr, $alias ) = @_;
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my $class = ref $self || $self;
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$alias ||= $name;
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111
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*{"${class}::$alias"} =
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$self->_generate( $library, $name, $params, $retr )
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unless defined &{"${class}::$alias"};
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}
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116
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return 1;
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}
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}
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120
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sub _generate {
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my ( $class, $library, $name, $params, $retr ) = @_;
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123
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my $key = uc "$library-$name";
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125
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return sub {
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my $self = shift;
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128
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my $api = defined $self->{$key} ? $self->{$key} : $self->{$key} =
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Win32::API->new( $library, $name, $params, $retr );
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die "Unable to import API $name from $library: $^E" unless defined $api;
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132
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return $api->Call(@_);
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};
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}
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136
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sub generate_ex {
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my $self = shift;
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138
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my %args = 'HASH' eq ref $_[0] ? %{ $_[0] } : @_;
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140
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while ( my ( $library, $params ) = each %args ) {
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foreach my $args ( @{$params} ) {
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$self->generate( $library, @{$args} );
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}
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}
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145
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146
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return 1;
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}
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149
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=head1 AUTHOR
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150
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151
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Sascha Kiefer, L
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153
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=head1 COPYRIGHT AND LICENSE
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154
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155
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Copyright (C) 2006 Sascha Kiefer
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157
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This library is free software; you can redistribute it and/or modify
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it under the same terms as Perl itself.
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159
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160
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=cut
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161
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162
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1;
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