On 2020-07-30 17:23, Chris Green wrote:
I'm converting a program from Python 2 gtk+ 2 to Python 3 and gtk+ 3.
It's mostly gone reasonably smoothly but I can't get multi-line text
entry to work.
The class that provides text entry (both single and multi-line) is:-
#
#
# Field on the GUI
#
class guiField:
widget = None
lines = 1
#
#
# Initialise the field
#
def __init__(self, lines=1):
self.lines = lines
if (self.lines > 1):
self.buffer = Gtk.TextBuffer()
self.view = Gtk.TextView()
self.view.set_size_request(-1, 24 * lines)
self.view.set_accepts_tab(False)
# self.widget = self.view
self.widget = Gtk.ScrolledWindow()
self.widget.add(self.view)
self.widget.set_policy(Gtk.PolicyType.AUTOMATIC,
Gtk.PolicyType.AUTOMATIC)
self.widget.set_shadow_type(Gtk.ShadowType.ETCHED_IN)
else:
self.widget = Gtk.Entry()
#
#
# get text from field
#
def get_text(self):
if (self.lines > 1):
[start, end] = self.buffer.get_bounds()
print(self.buffer.get_text(start, end, False))
return self.buffer.get_text(start, end, False)
else:
return self.widget.get_text()
#
#
# put text into a field
#
def set_text(self, text):
if (self.lines > 1):
self.buffer.set_text(text)
else:
self.widget.set_text(text)
The single line Gtk.Entry widgets work fine, text gets loaded, I can
change it and save it.
The multi-line Gtk.TextBuffer ones refuse to work at all, no errors or
anything but text won't load into them or save out of them. They used
to work fine in gtk+ 2.
Text loaded into the Gtk.TextBuffer using set_text() doesn't appear,
the text boxes are empty even though the 'text' parameter does have a
string in it (I've checked with a print()). I can enter text using
the keyboard but that text isn't retrieved by the get_text() method.
What am I doing wrong? Virtually nothing has changed in this part of
my code between gtk+ 2 and gtk+ 3, just the import and gtk to Gtk and
a couple of enum formats.
You're creating a TextBuffer and a TextView, but I don't see any code
that ties them together. How would the view know to display the contents
of the buffer?
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