Hello, Think I found something for you that seems to be working. I did not test it further but I do get a value back now. Hope this helps. 
use Win32::GUI;
use Win32::GUI::DIBitmap;
use Win32::GuiTest qw(FindWindowLike GetWindowText);

my @windows = FindWindowLike(0, qr/^search.cpan.org/);

my $hdc = Win32::GUI::DC->new($windows[0]->{handle});

print "hcd is $hdc\n";
print "Window name is '" . GetWindowText($windows[0]) . "'\n";

my $bmap = newFromDC Win32::GUI::DIBitmap ($hdc);

print "bmap is $bmap\n";

[download]
This results in: 
C:\code>perl dibitmap.pl
hcd is 318833948
Window name is 'search.cpan.org: The CPAN Search Site - Microsoft Inte
+rnet Explo
rer'
bmap is Win32::GUI::DIBitmap=SCALAR(0x2251a4)

[download]
Cheers,
Critter

In reply to Re: Using Win32::GUI::DIBitmap for screen capture by critter
in thread Using Win32::GUI::DIBitmap for screen capture by TROGDOR

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