Wxpython: Getfocuseditem() returning item even with nothing focused

Question

I’m writing an interface with wxPython, but I’ve come across a problem so far with no solution, even looking at the documentation.

I have a Listctrl with several items that should be sent to the other Listctrl when pressing a button. The problem is that I have to read this first Listctrl out to get the item that is focused. When I do it the first time, good, bad is how much I click without selecting anything the second time.

Imagery

When I click on the series, the disciplines appear, then I have to click on the discipline before trying to add, so far so good.

When I click add, the discipline goes to the other side... blz.

But when I click again on add the discipline, even without selecting anything, it adds to what was in place.

Code

When I click the button, this function is called, and lstDisciplines indicates the table on the left side and self.lstDisciplines the ones on the right side:

def adicionar_disciplina(self, event):
    n_disciplina = self.lstDisciplinasPadroes.GetFocusedItem()

    if not self.lstDisciplinasPadroes.IsSelected(n_disciplina):
        event.Skip()

    if 0 <= n_disciplina:
        #### INICIO ADICIONA NAS ESCOLHIDAS ####
        abreviacao = self.lstDisciplinasPadroes.GetItem(n_disciplina, 0).GetText()
        nomeDisciplina = self.lstDisciplinasPadroes.GetItem(n_disciplina, 1).GetText()
        nomeProfessor = self.lstDisciplinasPadroes.GetItem(n_disciplina, 2).GetText()

        numeroDisciplinasEscolhidas = self.lstDisciplinasEscolhidas.GetItemCount()

        self.lstDisciplinasEscolhidas.InsertItem(numeroDisciplinasEscolhidas, abreviacao)
        self.lstDisciplinasEscolhidas.SetItem(numeroDisciplinasEscolhidas, 1, nomeDisciplina)
        self.lstDisciplinasEscolhidas.SetItem(numeroDisciplinasEscolhidas, 2, nomeProfessor)
        #### FIM ADICIONA NAS ESCOLHIDAS ####

        #### INICIO REMOVE PADROES ####
        self.lstDisciplinasPadroes.DeleteItem(n_disciplina)
        #### FIM REMOVE PADROES ####

        self.disciplinasPorTurma[self.turma].update({abreviacao: [nomeDisciplina, nomeProfessor]})
    else:
        event.Skip()

Notes:

• Apparently, this variable n_disciplina is internal to the function and does not store its value anywhere else.
• That first little if I just added a little bit to try to answer my own question.

Answer 1

This code removes all selections:

for x in xrange(0, self.lstDisciplinasPadroes.GetItemCount(), 1):
    self.lstDisciplinasPadroes.Select(x, on=0)