Hi Aida,
You need to be carefully when using a sizer and the functions
Detach() or Remove().Remove() will remove the child from the sizer and
destroys it if its a sizer or spacer.
http://docs.wxwidgets.org/2.8.10/wx_wxsizer.html#wxsizerremove
http://docs.wxwidgets.org/2.8.10/wx_wxsizer.html#wxsizerdetach
In your example, these lines will destroy the "SUR" labels but not
the "Standard SUR" labels (m_label5 and m_label6):
m_grid_sizer2->Detach(m_label3);
m_grid_sizer2->Detach(m_label4);
m_label3->Destroy();
m_label4->Destroy();
In the next piece of code m_grid_sizer2 will be detached from
m_sizer3 but it will not be destroyed because when calling Remove() the
sizer m_grid_sizer2 is not a child of m_sizer3:
m_sizer3->Detach(m_grid_sizer2);
m_sizer3->Remove(m_grid_sizer2);
Finally m_sizer3 will be detached:
m_sizer2->Detach(m_sizer3);
m_sizer2->Remove(m_sizer3);
At the end, the labels m_label5 and m_label6 are not destroyed and
will be floating in the parent window because the sizer where they were
inserted (m_grid_sizer2) has been detached from the main sizer (m_sizer2).
I recommend you to better use show/hide functions instead of
destroying the labels/sizers. This will simplify the code. Sometimes we add
a checkbox called "Advanced" to show/hide some advanced controls on the
window.
Best,
Xavi
From: Aida Ninyerola [mailto:[email protected]]
Sent: lunes, 10 de octubre de 2011 15:11
To: [email protected]
Subject: [Gimias-developers] panel widget
Hi,
During our process we create some controls in order to show the achieved
results.
wxStaticBox* m_sizer3_staticbox = new wxStaticBox(this, -1,
wxT("Results of Quantificaction:"));
m_sizer3 = new wxStaticBoxSizer(m_sizer3_staticbox, wxVERTICAL);
m_grid_sizer2 = new wxFlexGridSizer(2, 2, 0, 0);
m_label3 = new wxStaticText(this, wxID_ANY, wxT("SUR " + nameResult
+ ":\t"),wxDefaultPosition, wxDefaultSize,
wxALIGN_LEFT|wxALIGN_CENTER_VERTICAL);
m_label3->SetFont(wxFont(8, wxDEFAULT, wxNORMAL, wxBOLD));
m_label4 = new wxStaticText(this, wxID_ANY,
wxT(wxString::Format("%.5f", numResult )),wxDefaultPosition, wxDefaultSize,
wxALIGN_RIGHT|wxALIGN_CENTER_VERTICAL);
m_label5 = new wxStaticText(this, wxID_ANY, wxT("Standard SUR
:\t"),wxDefaultPosition, wxDefaultSize,
wxALIGN_LEFT|wxALIGN_CENTER_VERTICAL);
m_label5->SetFont(wxFont(8, wxDEFAULT, wxNORMAL, wxBOLD));
m_label6 = new wxStaticText(this, wxID_ANY,
wxT(wxString::Format("%.5f", StandardResult )),wxDefaultPosition,
wxDefaultSize, wxALIGN_RIGHT|wxALIGN_CENTER_VERTICAL);
m_grid_sizer2->Add(m_label3, 0,wxEXPAND|wxALL,5);
m_grid_sizer2->Add(m_label4, 0,wxEXPAND|wxALL,5);
m_grid_sizer2->Add(m_label5, 0,wxEXPAND|wxALL,5);
m_grid_sizer2->Add(m_label6, 0,wxEXPAND|wxALL,5);
m_sizer3->Add(m_grid_sizer2, 0, wxALL|wxEXPAND, 5);
m_sizer2->Add(m_sizer3, 0, wxALL|wxEXPAND, 5);
// Resize this
// Cast a resize event
wxSizeEvent resEvent(this->GetBestSize(), this->GetId());
resEvent.SetEventObject(this);
this->GetEventHandler()->ProcessEvent(resEvent);
this->Refresh();
At some point we need to destroy this controls. We have this code in order
to achieve this
//Remove static texts
m_grid_sizer2->Detach(m_label3);
m_grid_sizer2->Detach(m_label4);
m_label3->Destroy();
m_label4->Destroy();
//Remove grid sizer
m_sizer3->Detach(m_grid_sizer2);
m_sizer3->Remove(m_grid_sizer2);
//Remove sizer 3
m_sizer3->Show(false);
m_sizer2->Detach(m_sizer3);
m_sizer2->Remove(m_sizer3);
GetSizer()->Layout();
GetSizer()->Fit(this);
// Resize this
// Cast a resize event
wxSizeEvent resEvent(this->GetBestSize(), this->GetId());
resEvent.SetEventObject(this);
this->GetEventHandler()->ProcessEvent(resEvent);
Although the creation works correctly, when we later try to destroy those
controls, they are not destroyed and other parts of the panel widget are
eliminated and all the panel widget of the processor stops working
correctly.
What is being done uncorrectly?
Thank you very much,
Aida
------------------------------------------------------------------------------
All the data continuously generated in your IT infrastructure contains a
definitive record of customers, application performance, security
threats, fraudulent activity and more. Splunk takes this data and makes
sense of it. Business sense. IT sense. Common sense.
http://p.sf.net/sfu/splunk-d2d-oct
_______________________________________________
Gimias-developers mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/gimias-developers
