I should have given more details initially. The wxTE_MULTILINE value is being retrieved from an XML file so I'm running into the same issue. This is what my XML entry looks like if it helps

<text_ctrl
    internal_name="text_ctrl_details" 
    parent="-1" 
    value="" 
    x_coordinate="100" 
    y_coordinate="53" 
    x_size="400" 
    y_size="110"
    style="wxTE_MULTILINE" />
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I'm then using XML::Twig to parse the XML so my actual code looks like this for creating the TextCtrl:

Wx::TextCtrl->new( $parent_panel, -1, $entry->att('value'), [$entry->a
+tt('x_coordinate'), $entry->att('y_coordinate')], [$entry->att('x_siz
+e'), $entry->att('y_size')], $entry->att('style') );
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I've tried making it a function in the XML file and it still fails to show up. It does however work if I assign the constant to a scalar like you described.

Any thoughts?