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On 5/21/21 9:24 AM, lifeatt...@gmail.com wrote:
FLTK 1.4, not too old; Linux MATE 20.1; gcc 9.3.0.
I think what's missing is you need to tell Fl_Tree_Item about
the widget by calling
Fl_Tree_Item::widget(_text).
The test/tree.cxx example shows how this works.
begin(); // For some reason this magic
is required when adding new items
The reason for begin() is Fl_Tree is derived from Fl_Group, so
when you add FLTK widgets
to the items, you have to call begin() before creating the
FLTK widget so it gets added to Fl_Tree's group.
The reason for the Fl_Tree_Item::widget() is the item needs to
know which FLTK widget
is associated with it, so it can manage it during drawing.
You may need to change your code a bit, as I think you had to
jump through some hoops
to get your MyText widget to work around the missing widget()
call..
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