// Modified by:
// Created: 31.01.01
// RCS-ID: $Id$
-// Copyright: (c) 2001 Vadim Zeitlin
+// Copyright: (c) 2001-2009 Vadim Zeitlin
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#include "wx/wx.h"
#endif
+#ifndef __WXMSW__
+ #include "../sample.xpm"
+#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)
+// define a custom event type (we don't need a separate declaration here but
+// usually you would use a matching wxDECLARE_EVENT in a header)
+wxDEFINE_EVENT(wxEVT_MY_CUSTOM_COMMAND, wxCommandEvent);
// 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 ), \
+ wxCommandEventHandler(fn), \
(wxObject *) NULL \
),
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()
};
void OnTest(wxCommandEvent& event)
{
- wxLogMessage(_T("This is the pushed test event handler #%u"), m_level);
+ wxLogMessage(wxT("This is the pushed test event handler #%u"), m_level);
// if we don't skip the event, the other event handlers won't get it:
// try commenting out this line and see what changes
// 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)
// '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(_T("Event wxWidgets Sample"),
+ MyFrame *frame = new MyFrame(wxT("Event wxWidgets Sample"),
wxPoint(50, 50), wxSize(600, 340));
// and show it (the frames, unlike simple controls, are not shown when
// 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_About, _T("&About...\tCtrl-A"), _T("Show about dialog"));
+ menuFile->Append(Event_About, wxT("&About...\tCtrl-A"), wxT("Show about dialog"));
menuFile->AppendSeparator();
- menuFile->Append(Event_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
+ menuFile->Append(Event_Quit, wxT("E&xit\tAlt-X"), wxT("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 */);
- menuEvent->Append(Event_Dynamic, _T("&Dynamic event\tCtrl-D"),
- _T("Dynamic event sample - only works after Connect"));
+#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, wxT("&Connect\tCtrl-C"),
+ wxT("Connect or disconnect the dynamic event handler"));
+ menuEvent->Append(Event_Dynamic, wxT("&Dynamic event\tCtrl-D"),
+ wxT("Dynamic event sample - only works after Connect"));
menuEvent->AppendSeparator();
- 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->Append(Event_Push, wxT("&Push event handler\tCtrl-P"),
+ wxT("Push event handler for test event"));
+ menuEvent->Append(Event_Pop, wxT("P&op event handler\tCtrl-O"),
+ wxT("Pop event handler for test event"));
+ menuEvent->Append(Event_Test, wxT("Test event\tCtrl-T"),
+ wxT("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"));
+ menuEvent->Append(Event_Custom, wxT("Fire c&ustom event\tCtrl-U"),
+ wxT("Generate a custom event"));
// now append the freshly created menu to the menu bar...
wxMenuBar *menuBar = new wxMenuBar();
- menuBar->Append(menuFile, _T("&File"));
- menuBar->Append(menuEvent, _T("&Event"));
+ menuBar->Append(menuFile, wxT("&File"));
+ menuBar->Append(menuEvent, wxT("&Event"));
// ... and attach this menu bar to the frame
SetMenuBar(menuBar);
#if wxUSE_STATUSBAR
CreateStatusBar(3);
- SetStatusText(_T("Welcome to wxWidgets event sample"));
- SetStatusText(_T("Dynamic: off"), Status_Dynamic);
- SetStatusText(_T("Push count: 0"), Status_Push);
+ SetStatusText(wxT("Welcome to wxWidgets event sample"));
+ SetStatusText(wxT("Dynamic: off"), Status_Dynamic);
+ SetStatusText(wxT("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
);
}
-void MyFrame::OnConnect(wxCommandEvent& event)
+#ifdef wxHAS_EVENT_BIND
+
+void MyFrame::OnBind(wxCommandEvent& event)
{
if ( event.IsChecked() )
{
- // disconnect
- 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
+ // 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 // connect
+ else // disconnect
{
- Disconnect(Event_Dynamic, wxID_ANY, wxEVT_COMMAND_MENU_SELECTED);
+ m_btnDynamic->Unbind(wxEVT_COMMAND_BUTTON_CLICKED,
+ &MyFrame::OnDynamic, this);
+ Unbind(wxEVT_COMMAND_MENU_SELECTED, &MyFrame::OnDynamic, this,
+ Event_Dynamic);
+ }
-#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());
+}
+
+#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));
+ }
+ 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));
}
+
+ UpdateDynamicStatus(event.IsChecked());
}
// ----------------------------------------------------------------------------
PushEventHandler(new MyEvtHandler(++m_nPush));
#if wxUSE_STATUSBAR
- SetStatusText(wxString::Format(_T("Push count: %u"), m_nPush), Status_Push);
+ SetStatusText(wxString::Format(wxT("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!") );
+ wxCHECK_RET( m_nPush, wxT("this command should be disabled!") );
PopEventHandler(true /* delete handler */);
m_nPush--;
#if wxUSE_STATUSBAR
- SetStatusText(wxString::Format(_T("Push count: %u"), m_nPush), Status_Push);
+ SetStatusText(wxString::Format(wxT("Push count: %u"), m_nPush), Status_Push);
#endif // wxUSE_STATUSBAR
}
void MyFrame::OnTest(wxCommandEvent& WXUNUSED(event))
{
- wxLogMessage(_T("This is the test event handler in the main frame"));
+ wxLogMessage(wxT("This is the test event handler in the main frame"));
}
void MyFrame::OnUpdateUIPop(wxUpdateUIEvent& event)
void MyFrame::OnProcessCustom(wxCommandEvent& WXUNUSED(event))
{
- wxLogMessage(_T("Got a custom event!"));
+ wxLogMessage(wxT("Got a custom event!"));
}
projects / wxWidgets.git / blobdiff