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Code Editor : Clipboard.pm

package Win32::Clipboard;
#######################################################################
#
# Win32::Clipboard - Interaction with the Windows clipboard
#
# Version: 0.58
# Author: Aldo Calpini <dada@perl.it>
#
# Modified by: Hideyo Imazu <himazu@gmail.com>
#
#######################################################################

require Exporter;
require DynaLoader;

@ISA = qw( Exporter DynaLoader );
@EXPORT = qw(
	CF_TEXT
	CF_BITMAP
	CF_METAFILEPICT
	CF_SYLK
	CF_DIF
	CF_TIFF
	CF_OEMTEXT
	CF_DIB
	CF_PALETTE
	CF_PENDATA
	CF_RIFF
	CF_WAVE
	CF_UNICODETEXT
	CF_ENHMETAFILE
	CF_HDROP
	CF_LOCALE
);

sub AUTOLOAD {
    my($constname);
    ($constname = $AUTOLOAD) =~ s/.*:://;
    #reset $! to zero to reset any current errors.
    local $! = 0;
    my $val = constant($constname, @_ ? $_[0] : 0);
    if ($! != 0) {
        if ($! =~ /Invalid/) {
            $AutoLoader::AUTOLOAD = $AUTOLOAD;
            goto &AutoLoader::AUTOLOAD;
        } else {
            my ($pack, $file, $line) = caller;
            die "Win32::Clipboard::$constname is not defined, used at $file line $line.";
        }
    }
    eval "sub $AUTOLOAD { $val }";
    goto &$AUTOLOAD;
}

$VERSION = "0.58";

sub new {
    my($class, $value) = @_;
    my $self = "I'm the Clipboard!";
    Set($value) if defined($value);
    return bless(\$self);
}

sub Version {
    return $VERSION;
}

sub Get {
	if(    IsBitmap() ) { return GetBitmap(); }
	elsif( IsFiles()  ) { return GetFiles();  }
	else                { return GetText();   }
}

sub TIESCALAR {
	my $class = shift;
	my $value = shift;
	Set($value) if defined $value;
	my $self = "I'm the Clipboard!";
	return bless \$self, $class;
}

sub FETCH { Get() }
sub STORE { shift; Set(@_) }

sub DESTROY {
    my($self) = @_;
    undef $self;
    StopClipboardViewer();
}

END {
    StopClipboardViewer();
}

bootstrap Win32::Clipboard;

# a little hack to use the module itself as a class.
sub main::Win32::Clipboard {
    my($value) = @_;
    my $self={};
    my $result = Win32::Clipboard::Set($value) if defined($value);
    return bless($self, "Win32::Clipboard");
}

__END__

=head1 NAME

Win32::Clipboard - Interaction with the Windows clipboard

=head1 SYNOPSIS

use Win32::Clipboard;

$CLIP = Win32::Clipboard();

print "Clipboard contains: ", $CLIP->Get(), "\n";

$CLIP->Set("some text to copy into the clipboard");

$CLIP->Empty();

$CLIP->WaitForChange();
    print "Clipboard has changed!\n";

=head1 DESCRIPTION

This module lets you interact with the Windows clipboard: you can get
its content, set it, empty it, or let your script sleep until it
changes.  This version supports 3 formats for clipboard data:

=over 4

=item * text (C<CF_TEXT>)

The clipboard contains some text; this is the B<only> format you can
use to set clipboard data; you get it as a single string.

Example:

$text = Win32::Clipboard::GetText();
    print $text;

=item * bitmap (C<CF_DIB>)

The clipboard contains an image, either a bitmap or a picture copied
in the clipboard from a graphic application. The data you get is a
binary buffer ready to be written to a bitmap (BMP format) file.

Example:

$image = Win32::Clipboard::GetBitmap();
    open    BITMAP, ">some.bmp";
    binmode BITMAP;
    print   BITMAP $image;
    close   BITMAP;

=item * list of files (C<CF_HDROP>)

The clipboard contains files copied or cutted from an Explorer-like
application; you get a list of filenames.

Example:

@files = Win32::Clipboard::GetFiles();
    print join("\n", @files);

=back

=head2 REFERENCE

All the functions can be used either with their full name
(eg. B<Win32::Clipboard::Get>) or as methods of a C<Win32::Clipboard>
object.  For the syntax, refer to L</SYNOPSIS> above. Note also that
you can create a clipboard object and set its content at the same time
with:

$CLIP = Win32::Clipboard("blah blah blah");

or with the more common form:

$CLIP = new Win32::Clipboard("blah blah blah");

If you prefer, you can even tie the Clipboard to a variable like this:

tie $CLIP, 'Win32::Clipboard';

print "Clipboard content: $CLIP\n";

$CLIP = "some text to copy to the clipboard...";

In this case, you can still access other methods using the tied()
function:

tied($CLIP)->Empty;
    print "got the picture" if tied($CLIP)->IsBitmap;

=over 4

=item Empty()

Empty the clipboard.

=item EnumFormats()

Returns an array of identifiers describing the format for the data
currently in the clipboard. Formats can be standard ones (described in
the L</CONSTANTS> section) or application-defined custom ones. See
also IsFormatAvailable().

=item Get()

Returns the clipboard content; note that the result depends on the
nature of clipboard data; to ensure that you get only the desired
format, you should use GetText(), GetBitmap() or GetFiles()
instead. Get() is in fact implemented as:

if(    IsBitmap() ) { return GetBitmap(); }
    elsif( IsFiles()  ) { return GetFiles();  }
    else                { return GetText();   }

See also IsBitmap(), IsFiles(), IsText(), EnumFormats() and
IsFormatAvailable() to check the clipboard format before getting data.

=item GetAs(FORMAT)

Returns the clipboard content in the desired FORMAT (can be one of the
constants defined in the L</CONSTANTS> section or a custom
format). Note that the only meaningful identifiers are CF_TEXT,
CF_UNICODETEXT, CF_DIB and CF_HDROP; any other format is treated as a
string.

If CF_UNICODETEXT is used, then binary Unicode data is returned. A
perl unicode string can be generated as follows:

$text = $clip->GetAs(CF_UNICODETEXT);
    $text = Encode::decode("UTF16-LE", $text);

=item GetBitmap()

Returns the clipboard content as an image, or C<undef> on errors.

=item GetFiles()

Returns the clipboard content as a list of filenames, or C<undef> on
errors.

=item GetFormatName(FORMAT)

Returns the name of the specified custom clipboard format, or C<undef>
on errors; note that you cannot get the name of the standard formats
(described in the L</CONSTANTS> section).

=item GetText()

Returns the clipboard content as a string, or C<undef> on errors.

=item IsBitmap()

Returns a boolean value indicating if the clipboard contains an image.
See also GetBitmap().

=item IsFiles()

Returns a boolean value indicating if the clipboard contains a list of
files. See also GetFiles().

=item IsFormatAvailable(FORMAT)

Checks if the clipboard data matches the specified FORMAT (one of the
constants described in the L</CONSTANTS> section); returns zero if the
data does not match, a nonzero value if it matches.

=item IsText()

Returns a boolean value indicating if the clipboard contains text.
See also GetText().

=item Set(VALUE)

Set the clipboard content to the specified string.

=item WaitForChange([TIMEOUT])

This function halts the script until the clipboard content changes. If
you specify a C<TIMEOUT> value (in milliseconds), the function will
return when this timeout expires, even if the clipboard hasn't
changed. If no value is given, it will wait indefinitely. Returns 1 if
the clipboard has changed, C<undef> on errors.

=back

=head2 CONSTANTS

These constants are the standard clipboard formats recognized by
Win32::Clipboard:

CF_TEXT             1
    CF_DIB              8
    CF_HDROP            15

The following formats are B<not recognized> by Win32::Clipboard; they
are, however, exported constants and can eventually be used with the
EnumFormats(), IsFormatAvailable() and GetAs() functions:

CF_BITMAP           2
    CF_METAFILEPICT     3
    CF_SYLK             4
    CF_DIF              5
    CF_TIFF             6
    CF_OEMTEXT          7
    CF_PALETTE          9
    CF_PENDATA          10
    CF_RIFF             11
    CF_WAVE             12
    CF_UNICODETEXT      13
    CF_ENHMETAFILE      14
    CF_LOCALE           16

=head1 AUTHOR

Version 0.52 was released by Hideyo Imazu <F<himazu@gmail.com>>.

Aldo Calpini <F<dada@perl.it>> was the former maintainer.

Original XS porting by Gurusamy Sarathy <F<gsar@cpan.org>>.

=cut

${this.title}

Code Editor : Clipboard.pm