Probably because is not implemented.

:) listctrl->GetItem()->SetFont() is implemented 

$ perl -MWx -le " print for grep/font/i, keys %Wx::ListItem:: "
SetFont
GetFont

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Although, its really not that hard to implement :) the hard part is figuring out which version of wxWidgets API it was added in 

 sub Wx::ListCtrl::GetItemFont { $_[0]->GetItem($_[1])->GetFont }
sub Wx::ListCtrl::SetItemFont { $_[0]->GetItem($_[1])->SetFont($_[2]) 
+}

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In reply to Re^4: wxPerl: is wxListCtrl Get/SetItemFont implemented? ( Wx::ListCtrl::GetItemFont, Wx::ListCtrl::SetItemFont ) by Anonymous Monk
in thread wxPerl: is wxListCtrl Get/SetItemFont implemented? and further important questions by HelenCr

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