Retaining selected value in wx.ComboBox

wxPython Users
1

I found an earlier message this month about using wx.ComboBox.Clear() and wx.ComboBox.AppendItems() to reconstruct a combo box at run-time after the original creation.

However, I'm reconstructing this ComboBox menu (along with a few adjacent ones) as the result of selecting a ComboBox item from the previous set of values in the list. After I do a .Clear() and .AppendItems(), I'm trying to use .SetValue() to set the "default" contents of the input text field, i.e.:

ComboBox1.Clear()
ComboBox1.AppendItems(ListOfItems1)
ComboBox1.SetValue(SelectedItem1)

(SelectedItem in ListOfItems) == True, so that shouldn't be an issue.

The problem: SelectedItem isn't displayed in ComboBox1's text field, at least not immediately. If I go through another iteration of .Clear(), AppendItems(), and SetItem() for this ComboBox1 (due to a selection in a separate, but adjacent ComboBox2), i.e.:

ComboBox1.Clear()
ComboBox1.AppendItems(ListOfItems1)
ComboBox1.SetValue(SelectedItem1)

ComboBox2.Clear()
ComboBox2.AppendItems(ListOfItems2)
ComboBox2.SetValue(SelectedItem2)

Now, ComboBox1 will display SelectedItem1 in the text field, but ComboBox2 will not display SelectedItem2.

I tried using .Paste() instead of .SetValue(), and although I can see the text (briefly) pasted into the text field, it disappears quickly thereafter.

If I actually enter text into the field and hit enter (invoking the handler bound to wx.EVT_TEXT_ENTER), the entered data remains in the text field.

If I change the style from wx.CB_DROPDOWN to wx.CB_READONLY, the problem goes away. I can select something in the list and it will remain in the text box.

Is there something I can do to either preserve or restore the string from the previous selection, so that it remains in the input text box?

2

Try using SetSelection(index) where index is the index number of the
item you want to show up.

ยทยทยท

On 6/28/05, Paul Barnett <wxpython@ptb.org> wrote:

I found an earlier message this month about using wx.ComboBox.Clear()
and wx.ComboBox.AppendItems() to reconstruct a combo box at run-time
after the original creation.

However, I'm reconstructing this ComboBox menu (along with a few
adjacent ones) as the result of selecting a ComboBox item from the
previous set of values in the list. After I do a .Clear() and
.AppendItems(), I'm trying to use .SetValue() to set the "default"
contents of the input text field, i.e.:

ComboBox1.Clear()
ComboBox1.AppendItems(ListOfItems1)
ComboBox1.SetValue(SelectedItem1)

(SelectedItem in ListOfItems) == True, so that shouldn't be an issue.

The problem: SelectedItem isn't displayed in ComboBox1's text field, at
least not immediately. If I go through another iteration of .Clear(),
AppendItems(), and SetItem() for this ComboBox1 (due to a selection in a
separate, but adjacent ComboBox2), i.e.:

ComboBox1.Clear()
ComboBox1.AppendItems(ListOfItems1)
ComboBox1.SetValue(SelectedItem1)

ComboBox2.Clear()
ComboBox2.AppendItems(ListOfItems2)
ComboBox2.SetValue(SelectedItem2)

Now, ComboBox1 will display SelectedItem1 in the text field, but
ComboBox2 will not display SelectedItem2.

I tried using .Paste() instead of .SetValue(), and although I can see
the text (briefly) pasted into the text field, it disappears quickly
thereafter.

If I actually enter text into the field and hit enter (invoking the
handler bound to wx.EVT_TEXT_ENTER), the entered data remains in the
text field.

If I change the style from wx.CB_DROPDOWN to wx.CB_READONLY, the problem
goes away. I can select something in the list and it will remain in the
text box.

Is there something I can do to either preserve or restore the string
from the previous selection, so that it remains in the input text box?

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