// Modified by:
// Created: 31.01.01
// RCS-ID: $Id$
-// Copyright: (c) 2001 Vadim Zeitlin
+// Copyright: (c) 2001-2009 Vadim Zeitlin
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
void OnQuit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
+#ifdef wxHAS_EVENT_BIND
+ void OnBind(wxCommandEvent& event);
+#endif // wxHAS_EVENT_BIND
void OnConnect(wxCommandEvent& event);
void OnDynamic(wxCommandEvent& event);
void OnPushEventHandler(wxCommandEvent& event);
void OnUpdateUIPop(wxUpdateUIEvent& event);
-protected:
+private:
+ // symbolic names for the status bar fields
+ enum
+ {
+ Status_Main = 0,
+ Status_Dynamic,
+ Status_Push
+ };
+
+ void UpdateDynamicStatus(bool on)
+ {
+#if wxUSE_STATUSBAR
+ if ( on )
+ {
+ SetStatusText("You can now use \"Dynamic\" item in the menu");
+ SetStatusText("Dynamic: on", Status_Dynamic);
+ }
+ else
+ {
+ SetStatusText("You can no more use \"Dynamic\" item in the menu");
+ SetStatusText("Dynamic: off", Status_Dynamic);
+ }
+#endif // wxUSE_STATUSBAR
+ }
+
// number of pushed event handlers
unsigned m_nPush;
-private:
+ // the button to whose event we connect dynamically
+ wxButton *m_btnDynamic;
+
// any class wishing to process wxWidgets events must use this macro
DECLARE_EVENT_TABLE()
};
// menu items
Event_Quit = 1,
Event_About,
+ Event_Bind,
Event_Connect,
Event_Dynamic,
Event_Push,
Event_Test
};
-// status bar fields
-enum
-{
- Status_Main = 0,
- Status_Dynamic,
- Status_Push
-};
-
// ----------------------------------------------------------------------------
// event tables and other macros for wxWidgets
// ----------------------------------------------------------------------------
EVT_MENU(Event_Quit, MyFrame::OnQuit)
EVT_MENU(Event_About, MyFrame::OnAbout)
+#ifdef wxHAS_EVENT_BIND
+ EVT_MENU(Event_Bind, MyFrame::OnBind)
+#endif // wxHAS_EVENT_BIND
EVT_MENU(Event_Connect, MyFrame::OnConnect)
EVT_MENU(Event_Custom, MyFrame::OnFireCustom)
// frame constructor
MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
- : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size)
+ : wxFrame(NULL, wxID_ANY, title, pos, size)
{
SetIcon(wxICON(sample));
// init members
m_nPush = 0;
+ m_btnDynamic = NULL;
// create a menu bar
wxMenu *menuFile = new wxMenu;
menuFile->Append(Event_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
wxMenu *menuEvent = new wxMenu;
- menuEvent->Append(Event_Connect, _T("&Connect\tCtrl-C"),
- _T("Connect or disconnect the dynamic event handler"),
- true /* checkable */);
+#ifdef wxHAS_EVENT_BIND
+ menuEvent->AppendCheckItem(Event_Bind, "&Bind\tCtrl-B",
+ "Bind or unbind a dynamic event handler");
+#endif // wxHAS_EVENT_BIND
+ menuEvent->AppendCheckItem(Event_Connect, _T("&Connect\tCtrl-C"),
+ _T("Connect or disconnect the dynamic event handler"));
menuEvent->Append(Event_Dynamic, _T("&Dynamic event\tCtrl-D"),
_T("Dynamic event sample - only works after Connect"));
menuEvent->AppendSeparator();
SetStatusText(_T("Dynamic: off"), Status_Dynamic);
SetStatusText(_T("Push count: 0"), Status_Push);
#endif // wxUSE_STATUSBAR
+
+ wxPanel * const panel = new wxPanel(this);
+ wxSizer * const sizer = new wxBoxSizer(wxHORIZONTAL);
+ const wxSizerFlags centreY(wxSizerFlags().Centre().Border());
+ sizer->Add(new wxStaticText(panel, wxID_ANY,
+ "This button will only work if its handler is dynamically connected"),
+ centreY);
+ m_btnDynamic = new wxButton(panel, Event_Dynamic, "&Dynamic button");
+ sizer->Add(m_btnDynamic, centreY);
+ panel->SetSizer(sizer);
}
MyFrame::~MyFrame()
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
- wxMessageBox( wxT("Event sample shows different ways of using events\n")
- wxT("(c) 2001 Vadim Zeitlin"),
- wxT("About Event Sample"), wxOK | wxICON_INFORMATION, this );
+ wxMessageBox("Event sample shows different ways of using events\n"
+ "(c) 2001-2009 Vadim Zeitlin",
+ "About wxWidgets Event Sample",
+ wxOK | wxICON_INFORMATION, this);
}
// ----------------------------------------------------------------------------
// dynamic event handling stuff
// ----------------------------------------------------------------------------
-void MyFrame::OnDynamic(wxCommandEvent& WXUNUSED(event))
+void MyFrame::OnDynamic(wxCommandEvent& event)
{
+ wxString origin;
+ if ( event.GetEventObject() == this )
+ origin = "menu item";
+ else if ( event.GetEventObject() == m_btnDynamic )
+ origin = "button";
+ else
+ origin = "unknown event source";
+
wxMessageBox
(
- wxT("This is a dynamic event handler which can be connected ")
- wxT("and disconnected at run-time."),
- wxT("Dynamic Event Handler"), wxOK | wxICON_INFORMATION, this
+ "This message box is shown from the dynamically connected "
+ "event handler in response to event generated by " + origin,
+ "wxWidgets Event Sample", wxOK | wxICON_INFORMATION, this
);
}
+#ifdef wxHAS_EVENT_BIND
+
+void MyFrame::OnBind(wxCommandEvent& event)
+{
+ if ( event.IsChecked() )
+ {
+ // as we bind directly to the button, there is no need to use an id
+ // here: the button will only ever get its own events
+ m_btnDynamic->Bind(wxEVT_COMMAND_BUTTON_CLICKED, &MyFrame::OnDynamic,
+ this);
+
+ // but we do need the id for the menu command as the frame gets all of
+ // them
+ Bind(wxEVT_COMMAND_MENU_SELECTED, &MyFrame::OnDynamic, this,
+ Event_Dynamic);
+ }
+ else // disconnect
+ {
+ m_btnDynamic->Unbind(wxEVT_COMMAND_BUTTON_CLICKED,
+ &MyFrame::OnDynamic, this);
+ Unbind(wxEVT_COMMAND_MENU_SELECTED, &MyFrame::OnDynamic, this,
+ Event_Dynamic);
+ }
+
+ UpdateDynamicStatus(event.IsChecked());
+}
+
+#endif // wxHAS_EVENT_BIND
+
void MyFrame::OnConnect(wxCommandEvent& event)
{
if ( event.IsChecked() )
{
+ m_btnDynamic->Connect(wxID_ANY, wxEVT_COMMAND_BUTTON_CLICKED,
+ wxCommandEventHandler(MyFrame::OnDynamic),
+ NULL, this);
Connect(Event_Dynamic, wxEVT_COMMAND_MENU_SELECTED,
wxCommandEventHandler(MyFrame::OnDynamic));
-
-#if wxUSE_STATUSBAR
- SetStatusText(_T("You can now use \"Dynamic\" item in the menu"));
- SetStatusText(_T("Dynamic: on"), Status_Dynamic);
-#endif // wxUSE_STATUSBAR
}
else // disconnect
{
+ m_btnDynamic->Disconnect(wxID_ANY, wxEVT_COMMAND_BUTTON_CLICKED,
+ wxCommandEventHandler(MyFrame::OnDynamic),
+ NULL, this);
Disconnect(Event_Dynamic, wxEVT_COMMAND_MENU_SELECTED,
wxCommandEventHandler(MyFrame::OnDynamic));
-
-#if wxUSE_STATUSBAR
- SetStatusText(_T("You can no more use \"Dynamic\" item in the menu"));
- SetStatusText(_T("Dynamic: off"), Status_Dynamic);
-#endif // wxUSE_STATUSBAR
}
+
+ UpdateDynamicStatus(event.IsChecked());
}
// ----------------------------------------------------------------------------
projects / wxWidgets.git / blobdiff