X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/41f02b9acc01217e918fa422298840df7cf6de25..fb4079af5ba82f05e1115f0f0c734b77cf8164e7:/samples/event/event.cpp diff --git a/samples/event/event.cpp b/samples/event/event.cpp index 4b07cd06e4..3cc8c01e55 100644 --- a/samples/event/event.cpp +++ b/samples/event/event.cpp @@ -5,7 +5,7 @@ // Modified by: // Created: 31.01.01 // RCS-ID: $Id$ -// Copyright: (c) 2001 Vadim Zeitlin +// Copyright: (c) 2001-2009 Vadim Zeitlin // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -77,6 +77,9 @@ public: 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); @@ -88,11 +91,37 @@ public: 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() }; @@ -128,6 +157,7 @@ enum // menu items Event_Quit = 1, Event_About, + Event_Bind, Event_Connect, Event_Dynamic, Event_Push, @@ -136,14 +166,6 @@ enum Event_Test }; -// status bar fields -enum -{ - Status_Main = 0, - Status_Dynamic, - Status_Push -}; - // ---------------------------------------------------------------------------- // event tables and other macros for wxWidgets // ---------------------------------------------------------------------------- @@ -155,6 +177,9 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame) 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) @@ -216,12 +241,13 @@ bool MyApp::OnInit() // 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; @@ -231,9 +257,12 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) 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(); @@ -261,6 +290,16 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) 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() @@ -285,47 +324,83 @@ void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event)) 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()); } // ----------------------------------------------------------------------------