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Allow modifying wxComboBox from its CLOSEUP handler with wxGTK2

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Doing this resulted in GTK errors about invalid iterators, so postpone the
generation of the CLOSEUP event for slightly later to allow changing the
combobox contents from it with GTK+ 2 (this is not necessary with GTK+ 3).

Also add a demon of a dynamic combobox, creating and destroying its items on
the fly, to the widgets sample.

Closes #17223.
This commit is contained in:
Igor Korot
2016-02-24 20:07:34 +01:00
committed by Vadim Zeitlin
parent 62b5e1b2ef
commit a216806c99
3 changed files with 46 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
samples/widgets/combobox.cpp
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@@ -74,7 +74,8 @@ enum
ComboPage_SetValue,
ComboPage_SetValueText,
ComboPage_Combo,
ComboPage_ContainerTests
ComboPage_ContainerTests,
ComboPage_Dynamic
};
// kinds of comboboxes
@@ -121,6 +122,8 @@ protected:
void OnDropdown(wxCommandEvent& event);
void OnCloseup(wxCommandEvent& event);
void OnPopup(wxCommandEvent &event);
void OnDismiss(wxCommandEvent &event);
void OnComboBox(wxCommandEvent& event);
void OnComboText(wxCommandEvent& event);
void OnComboTextPasted(wxClipboardTextEvent& event);
@@ -155,7 +158,7 @@ protected:
*m_chkProcessEnter;
// the combobox itself and the sizer it is in
wxComboBox *m_combobox;
wxComboBox *m_combobox, *m_combobox1;
wxSizer *m_sizerCombo;
// the text entries for "Add/change string" and "Delete" buttons
@@ -380,6 +383,13 @@ void ComboboxWidgetsPage::CreateContent()
0, NULL,
0);
sizerRight->Add(m_combobox, 0, wxGROW | wxALL, 5);
m_combobox1 = new wxComboBox( this, ComboPage_Dynamic );
m_combobox1->Append( "Dynamic ComboBox Test - Click me!" );
m_combobox1->SetSelection( 0 );
sizerRight->Add( 20, 20, 0, wxEXPAND, 0 );
sizerRight->Add( m_combobox1, 0, wxGROW | wxALL, 5 );
m_combobox1->Bind( wxEVT_COMBOBOX_DROPDOWN, &ComboboxWidgetsPage::OnPopup, this );
m_combobox1->Bind( wxEVT_COMBOBOX_CLOSEUP, &ComboboxWidgetsPage::OnDismiss, this );
sizerRight->SetMinSize(150, 0);
m_sizerCombo = sizerRight; // save it to modify it later
@@ -699,4 +709,24 @@ void ComboboxWidgetsPage::OnCloseup(wxCommandEvent& WXUNUSED(event))
wxLogMessage(wxT("Combobox closed up"));
}
void ComboboxWidgetsPage::OnPopup(wxCommandEvent &WXUNUSED(event))
{
m_combobox1->Clear();
m_combobox1->Append( "Selection 1" );
m_combobox1->Append( "Selection 2" );
m_combobox1->Append( "Selection 3" );
wxLogMessage("The number of items is %d", m_combobox1->GetCount());
}
void ComboboxWidgetsPage::OnDismiss(wxCommandEvent &WXUNUSED(event))
{
if ( m_combobox1->GetSelection() == wxNOT_FOUND )
{
m_combobox1->Clear();
m_combobox1->Append( "Dynamic ComboBox Test - Click me!" );
m_combobox1->SetSelection( 0 );
}
wxLogMessage("The number of items is %d", m_combobox1->GetCount());
}
#endif // wxUSE_COMBOBOX