X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/3aa467b63eceaae5047f1c15e5c6d59c53c3600b..150c8eb9190be56e8d9f6c286324dda409d483d4:/samples/event/event.cpp diff --git a/samples/event/event.cpp b/samples/event/event.cpp index f158b8695b..2b9c5850fb 100644 --- a/samples/event/event.cpp +++ b/samples/event/event.cpp @@ -1,6 +1,6 @@ ///////////////////////////////////////////////////////////////////////////// // Name: event.cpp -// Purpose: wxWindows sample demonstrating different event usage +// Purpose: wxWidgets sample demonstrating different event usage // Author: Vadim Zeitlin // Modified by: // Created: 31.01.01 @@ -17,13 +17,6 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ - // DO NOT use event.cpp here, it breaks statics initialization in - // src/common/event.cpp and nothing works at all then! - #pragma implementation "eventsample.cpp" - #pragma interface "eventsample.cpp" -#endif - // For compilers that support precompilation, includes "wx/wx.h". #include "wx/wxprec.h" @@ -32,11 +25,38 @@ #endif // for all others, include the necessary headers (this file is usually all you -// need because it includes almost all "standard" wxWindows headers) +// need because it includes almost all "standard" wxWidgets headers) #ifndef WX_PRECOMP #include "wx/wx.h" #endif +// ---------------------------------------------------------------------------- +// event constants +// ---------------------------------------------------------------------------- + +// declare a custom event type +// +// note that in wxWin 2.3+ these macros expand simply into the following code: +// +// extern const wxEventType wxEVT_MY_CUSTOM_COMMAND; +// +// const wxEventType wxEVT_MY_CUSTOM_COMMAND = wxNewEventType(); +// +// and you may use this code directly if you don't care about 2.2 compatibility +BEGIN_DECLARE_EVENT_TYPES() + DECLARE_EVENT_TYPE(wxEVT_MY_CUSTOM_COMMAND, 7777) +END_DECLARE_EVENT_TYPES() + +DEFINE_EVENT_TYPE(wxEVT_MY_CUSTOM_COMMAND) + +// it may also be convenient to define an event table macro for this event type +#define EVT_MY_CUSTOM_COMMAND(id, fn) \ + DECLARE_EVENT_TABLE_ENTRY( \ + wxEVT_MY_CUSTOM_COMMAND, id, wxID_ANY, \ + (wxObjectEventFunction)(wxEventFunction) wxStaticCastEvent( wxCommandEventFunction, &fn ), \ + (wxObject *) NULL \ + ), + // ---------------------------------------------------------------------------- // private classes // ---------------------------------------------------------------------------- @@ -70,14 +90,17 @@ public: void OnPopEventHandler(wxCommandEvent& event); void OnTest(wxCommandEvent& event); + void OnFireCustom(wxCommandEvent& event); + void OnProcessCustom(wxCommandEvent& event); + void OnUpdateUIPop(wxUpdateUIEvent& event); protected: // number of pushed event handlers - size_t m_nPush; + unsigned m_nPush; private: - // any class wishing to process wxWindows events must use this macro + // any class wishing to process wxWidgets events must use this macro DECLARE_EVENT_TABLE() }; @@ -97,7 +120,7 @@ public: } private: - size_t m_level; + unsigned m_level; DECLARE_EVENT_TABLE() }; @@ -116,6 +139,7 @@ enum Event_Dynamic, Event_Push, Event_Pop, + Event_Custom, Event_Test }; @@ -128,10 +152,10 @@ enum }; // ---------------------------------------------------------------------------- -// event tables and other macros for wxWindows +// event tables and other macros for wxWidgets // ---------------------------------------------------------------------------- -// the event tables connect the wxWindows events with the functions (event +// the event tables connect the wxWidgets events with the functions (event // handlers) which process them. It can be also done at run-time, but for the // simple menu events like this the static method is much simpler. BEGIN_EVENT_TABLE(MyFrame, wxFrame) @@ -140,18 +164,25 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame) EVT_MENU(Event_Connect, MyFrame::OnConnect) + EVT_MENU(Event_Custom, MyFrame::OnFireCustom) EVT_MENU(Event_Test, MyFrame::OnTest) EVT_MENU(Event_Push, MyFrame::OnPushEventHandler) EVT_MENU(Event_Pop, MyFrame::OnPopEventHandler) EVT_UPDATE_UI(Event_Pop, MyFrame::OnUpdateUIPop) + + EVT_MY_CUSTOM_COMMAND(wxID_ANY, MyFrame::OnProcessCustom) + + // the line below would also work if OnProcessCustom() were defined as + // taking a wxEvent (as required by EVT_CUSTOM) and not wxCommandEvent + //EVT_CUSTOM(wxEVT_MY_CUSTOM_COMMAND, wxID_ANY, MyFrame::OnProcessCustom) END_EVENT_TABLE() BEGIN_EVENT_TABLE(MyEvtHandler, wxEvtHandler) EVT_MENU(Event_Test, MyEvtHandler::OnTest) END_EVENT_TABLE() -// Create a new application object: this macro will allow wxWindows to create +// Create a new application object: this macro will allow wxWidgets to create // the application object during program execution (it's better than using a // static object for many reasons) and also declares the accessor function // wxGetApp() which will return the reference of the right type (i.e. MyApp and @@ -169,18 +200,21 @@ IMPLEMENT_APP(MyApp) // 'Main program' equivalent: the program execution "starts" here bool MyApp::OnInit() { + if ( !wxApp::OnInit() ) + return false; + // create the main application window - MyFrame *frame = new MyFrame("Event wxWindows Sample", - wxPoint(50, 50), wxSize(450, 340)); + MyFrame *frame = new MyFrame(_T("Event wxWidgets Sample"), + wxPoint(50, 50), wxSize(600, 340)); // and show it (the frames, unlike simple controls, are not shown when // created initially) - frame->Show(TRUE); + frame->Show(true); // success: wxApp::OnRun() will be called which will enter the main message - // loop and the application will run. If we returned FALSE here, the + // loop and the application will run. If we returned false here, the // application would exit immediately. - return TRUE; + return true; } // ---------------------------------------------------------------------------- @@ -189,7 +223,7 @@ bool MyApp::OnInit() // frame constructor MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) - : wxFrame((wxFrame *)NULL, -1, title, pos, size) + : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size) { // init members m_nPush = 0; @@ -197,35 +231,38 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) // create a menu bar wxMenu *menuFile = new wxMenu; - menuFile->Append(Event_About, "&About...\tCtrl-A", "Show about dialog"); + menuFile->Append(Event_About, _T("&About...\tCtrl-A"), _T("Show about dialog")); menuFile->AppendSeparator(); - menuFile->Append(Event_Quit, "E&xit\tAlt-X", "Quit this program"); + menuFile->Append(Event_Quit, _T("E&xit\tAlt-X"), _T("Quit this program")); wxMenu *menuEvent = new wxMenu; - menuEvent->Append(Event_Connect, "&Connect\tCtrl-C", - "Connect or disconnect the dynamic event handler", - TRUE /* checkable */); - menuEvent->Append(Event_Dynamic, "&Dynamic event\tCtrl-D", - "Dynamic event sample - only works after Connect"); + menuEvent->Append(Event_Connect, _T("&Connect\tCtrl-C"), + _T("Connect or disconnect the dynamic event handler"), + true /* checkable */); + menuEvent->Append(Event_Dynamic, _T("&Dynamic event\tCtrl-D"), + _T("Dynamic event sample - only works after Connect")); menuEvent->AppendSeparator(); - menuEvent->Append(Event_Push, "&Push event handler\tCtrl-P", - "Push event handler for test event"); - menuEvent->Append(Event_Pop, "P&op event handler\tCtrl-O", - "Pop event handler for test event"); - menuEvent->Append(Event_Test, "Test event\tCtrl-T", - "Test event processed by pushed event handler"); + menuEvent->Append(Event_Push, _T("&Push event handler\tCtrl-P"), + _T("Push event handler for test event")); + menuEvent->Append(Event_Pop, _T("P&op event handler\tCtrl-O"), + _T("Pop event handler for test event")); + menuEvent->Append(Event_Test, _T("Test event\tCtrl-T"), + _T("Test event processed by pushed event handler")); + menuEvent->AppendSeparator(); + menuEvent->Append(Event_Custom, _T("Fire c&ustom event\tCtrl-U"), + _T("Generate a custom event")); // now append the freshly created menu to the menu bar... wxMenuBar *menuBar = new wxMenuBar(); - menuBar->Append(menuFile, "&File"); - menuBar->Append(menuEvent, "&Event"); + menuBar->Append(menuFile, _T("&File")); + menuBar->Append(menuEvent, _T("&Event")); // ... and attach this menu bar to the frame SetMenuBar(menuBar); #if wxUSE_STATUSBAR CreateStatusBar(3); - SetStatusText("Welcome to wxWindows event sample"); + SetStatusText(_T("Welcome to wxWidgets event sample")); SetStatusText(_T("Dynamic: off"), Status_Dynamic); SetStatusText(_T("Push count: 0"), Status_Push); #endif // wxUSE_STATUSBAR @@ -237,7 +274,7 @@ MyFrame::~MyFrame() // crashes! while ( m_nPush-- != 0 ) { - PopEventHandler(TRUE /* delete handler */); + PopEventHandler(true /* delete handler */); } } @@ -247,15 +284,15 @@ MyFrame::~MyFrame() void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event)) { - // TRUE is to force the frame to close - Close(TRUE); + // true is to force the frame to close + Close(true); } void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event)) { - wxMessageBox(_T("Event sample shows different ways of using events\n" - "© 2001 Vadim Zeitlin"), - _T("About Event Sample"), wxOK | wxICON_INFORMATION, this); + wxMessageBox( wxT("Event sample shows different ways of using events\n") + wxT("(c) 2001 Vadim Zeitlin"), + wxT("About Event Sample"), wxOK | wxICON_INFORMATION, this ); } // ---------------------------------------------------------------------------- @@ -264,9 +301,12 @@ void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event)) void MyFrame::OnDynamic(wxCommandEvent& WXUNUSED(event)) { - wxMessageBox(_T("This is a dynamic event handler which can be connected " - "and disconnected during run-time."), - _T("Dynamic Event Handler"), wxOK | wxICON_INFORMATION, this); + 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 + ); } void MyFrame::OnConnect(wxCommandEvent& event) @@ -274,20 +314,24 @@ void MyFrame::OnConnect(wxCommandEvent& event) if ( event.IsChecked() ) { // disconnect - Connect(Event_Dynamic, -1, wxEVT_COMMAND_MENU_SELECTED, + Connect(Event_Dynamic, wxID_ANY, wxEVT_COMMAND_MENU_SELECTED, (wxObjectEventFunction) (wxEventFunction) (wxCommandEventFunction)&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 // connect { - Disconnect(Event_Dynamic, -1, wxEVT_COMMAND_MENU_SELECTED); + Disconnect(Event_Dynamic, wxID_ANY, wxEVT_COMMAND_MENU_SELECTED); +#if wxUSE_STATUSBAR SetStatusText(_T("You can no more use \"Dynamic\" item in the menu")); SetStatusText(_T("Dynamic: off"), Status_Dynamic); +#endif // wxUSE_STATUSBAR } } @@ -299,20 +343,24 @@ void MyFrame::OnPushEventHandler(wxCommandEvent& WXUNUSED(event)) { PushEventHandler(new MyEvtHandler(++m_nPush)); +#if wxUSE_STATUSBAR SetStatusText(wxString::Format(_T("Push count: %u"), m_nPush), Status_Push); +#endif // wxUSE_STATUSBAR } void MyFrame::OnPopEventHandler(wxCommandEvent& WXUNUSED(event)) { wxCHECK_RET( m_nPush, _T("this command should be disabled!") ); - PopEventHandler(TRUE /* delete handler */); + PopEventHandler(true /* delete handler */); m_nPush--; +#if wxUSE_STATUSBAR SetStatusText(wxString::Format(_T("Push count: %u"), m_nPush), Status_Push); +#endif // wxUSE_STATUSBAR } -void MyFrame::OnTest(wxCommandEvent& event) +void MyFrame::OnTest(wxCommandEvent& WXUNUSED(event)) { wxLogMessage(_T("This is the test event handler in the main frame")); } @@ -322,3 +370,19 @@ void MyFrame::OnUpdateUIPop(wxUpdateUIEvent& event) event.Enable( m_nPush > 0 ); } +// ---------------------------------------------------------------------------- +// custom event methods +// ---------------------------------------------------------------------------- + +void MyFrame::OnFireCustom(wxCommandEvent& WXUNUSED(event)) +{ + wxCommandEvent eventCustom(wxEVT_MY_CUSTOM_COMMAND); + + wxPostEvent(this, eventCustom); +} + +void MyFrame::OnProcessCustom(wxCommandEvent& WXUNUSED(event)) +{ + wxLogMessage(_T("Got a custom event!")); +} +