/////////////////////////////////////////////////////////////////////////////
// Name: minimal.cpp
-// Purpose: Minimal wxWindows sample
+// Purpose: Minimal wxWidgets sample
// Author: Julian Smart
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
-// Copyright: (c) Julian Smart and Markus Holzem
-// Licence: wxWindows license
+// Copyright: (c) Julian Smart
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "minimal.cpp"
-#pragma interface "minimal.cpp"
-#endif
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
+// for all others, include the necessary headers (this file is usually all you
+// need because it includes almost all "standard" wxWidgets headers)
#ifndef WX_PRECOMP
-#include "wx/wx.h"
+ #include "wx/wx.h"
#endif
-#ifdef __WXGTK__
-#include "mondrian.xpm"
+// ----------------------------------------------------------------------------
+// resources
+// ----------------------------------------------------------------------------
+
+// the application icon (under Windows and OS/2 it is in resources and even
+// though we could still include the XPM here it would be unused)
+#if !defined(__WXMSW__) && !defined(__WXPM__)
+ #include "../sample.xpm"
#endif
-// Define a new application type
-class MyApp: public wxApp
-{ public:
- bool OnInit(void);
+// ----------------------------------------------------------------------------
+// private classes
+// ----------------------------------------------------------------------------
+
+// Define a new application type, each program should derive a class from wxApp
+class MyApp : public wxApp
+{
+public:
+ // override base class virtuals
+ // ----------------------------
+
+ // this one is called on application startup and is a good place for the app
+ // initialization (doing it here and not in the ctor allows to have an error
+ // return: if OnInit() returns false, the application terminates)
+ virtual bool OnInit();
};
-// Define a new frame type
-class MyFrame: public wxFrame
-{ public:
- MyFrame(wxFrame *frame, char *title, int x, int y, int w, int h);
-
- public:
+// Define a new frame type: this is going to be our main frame
+class MyFrame : public wxFrame
+{
+public:
+ // ctor(s)
+ MyFrame(const wxString& title);
+
+ // event handlers (these functions should _not_ be virtual)
void OnQuit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
- bool OnClose(void) { return TRUE; }
- DECLARE_EVENT_TABLE()
-
+private:
+ // any class wishing to process wxWidgets events must use this macro
+ DECLARE_EVENT_TABLE()
+};
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+// IDs for the controls and the menu commands
+enum
+{
+ // menu items
+ Minimal_Quit = wxID_EXIT,
+
+ // it is important for the id corresponding to the "About" command to have
+ // this standard value as otherwise it won't be handled properly under Mac
+ // (where it is special and put into the "Apple" menu)
+ Minimal_About = wxID_ABOUT
};
-// ID for the menu commands
-#define MINIMAL_QUIT 1
-#define MINIMAL_TEXT 101
-#define MINIMAL_ABOUT 102
+// ----------------------------------------------------------------------------
+// event tables and other macros for wxWidgets
+// ----------------------------------------------------------------------------
+// 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)
- EVT_MENU(MINIMAL_QUIT, MyFrame::OnQuit)
- EVT_MENU(MINIMAL_ABOUT, MyFrame::OnAbout)
+ EVT_MENU(Minimal_Quit, MyFrame::OnQuit)
+ EVT_MENU(Minimal_About, MyFrame::OnAbout)
END_EVENT_TABLE()
-// Create a new application object
-IMPLEMENT_APP (MyApp)
+// 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 implements the accessor function
+// wxGetApp() which will return the reference of the right type (i.e. MyApp and
+// not wxApp)
+IMPLEMENT_APP(MyApp)
-// `Main program' equivalent, creating windows and returning main app frame
-bool MyApp::OnInit(void)
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// the application class
+// ----------------------------------------------------------------------------
+
+// 'Main program' equivalent: the program execution "starts" here
+bool MyApp::OnInit()
{
- // Create the main frame window
- MyFrame *frame = new MyFrame((wxFrame *) NULL, (char *) "Minimal wxWindows App", 50, 50, 450, 340);
+ // create the main application window
+ MyFrame *frame = new MyFrame(_T("Minimal wxWidgets App"));
- // Give it an icon
-#ifdef __WXMSW__
- frame->SetIcon(wxIcon("mondrian"));
-#endif
-#ifdef __WXGTK__
- frame->SetIcon(wxIcon( mondrian_xpm ));
-#endif
+ // and show it (the frames, unlike simple controls, are not shown when
+ // created initially)
+ 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
+ // application would exit immediately.
+ return true;
+}
- // Make a menubar
- wxMenu *file_menu = new wxMenu;
+// ----------------------------------------------------------------------------
+// main frame
+// ----------------------------------------------------------------------------
- file_menu->Append(MINIMAL_ABOUT, "&About");
- file_menu->Append(MINIMAL_QUIT, "E&xit");
- wxMenuBar *menu_bar = new wxMenuBar;
- menu_bar->Append(file_menu, "&File");
- frame->SetMenuBar(menu_bar);
+// frame constructor
+MyFrame::MyFrame(const wxString& title)
+ : wxFrame(NULL, wxID_ANY, title)
+{
+ // set the frame icon
+ SetIcon(wxICON(sample));
+
+#if wxUSE_MENUS
+ // create a menu bar
+ wxMenu *menuFile = new wxMenu;
+
+ // the "About" item should be in the help menu
+ wxMenu *helpMenu = new wxMenu;
+ helpMenu->Append(Minimal_About, _T("&About...\tF1"), _T("Show about dialog"));
- // Make a panel with a message
- wxPanel *panel = new wxPanel(frame, -1, wxPoint(0, 0), wxSize(400, 200), wxTAB_TRAVERSAL);
+ menuFile->Append(Minimal_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
- (void)new wxStaticText(panel, 311, "Hello!", wxPoint(10, 10), wxSize(-1, -1), 0);
+ // now append the freshly created menu to the menu bar...
+ wxMenuBar *menuBar = new wxMenuBar();
+ menuBar->Append(menuFile, _T("&File"));
+ menuBar->Append(helpMenu, _T("&Help"));
- // Show the frame
- frame->Show(TRUE);
-
- SetTopWindow(frame);
+ // ... and attach this menu bar to the frame
+ SetMenuBar(menuBar);
+#endif // wxUSE_MENUS
- return TRUE;
+#if wxUSE_STATUSBAR
+ // create a status bar just for fun (by default with 1 pane only)
+ CreateStatusBar(2);
+ SetStatusText(_T("Welcome to wxWidgets!"));
+#endif // wxUSE_STATUSBAR
}
-// My frame constructor
-MyFrame::MyFrame(wxFrame *frame, char *title, int x, int y, int w, int h):
- wxFrame(frame, -1, title, wxPoint(x, y), wxSize(w, h))
-{}
-void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event) )
+// event handlers
+
+void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
- Close(TRUE);
+ // true is to force the frame to close
+ Close(true);
}
-void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
+void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
- wxMessageDialog dialog(this, "This is a minimal sample\nA second line in the message box",
- "About Minimal", wxYES_NO|wxCANCEL);
+ wxString msg;
+ msg.Printf( _T("This is the About dialog of the minimal sample.\n")
+ _T("Welcome to %s"), wxVERSION_STRING);
- dialog.ShowModal();
+ wxMessageBox(msg, _T("About Minimal"), wxOK | wxICON_INFORMATION, this);
}
-
-
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