X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c801d85f158c4cba50b588807daabdcbd0ed3853..14619f10b0bdb630206607abd0ce0319d45e095a:/samples/minimal/minimal.cpp diff --git a/samples/minimal/minimal.cpp b/samples/minimal/minimal.cpp index 86a0e89965..a78e462908 100644 --- a/samples/minimal/minimal.cpp +++ b/samples/minimal/minimal.cpp @@ -1,116 +1,200 @@ ///////////////////////////////////////////////////////////////////////////// // 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 -// Define a new application type -class MyApp: public wxApp -{ public: - bool OnInit(void); +// ---------------------------------------------------------------------------- +// 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) +#ifndef wxHAS_IMAGES_IN_RESOURCES + #include "../sample.xpm" +#endif + +// ---------------------------------------------------------------------------- +// 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() }; -// ID for the menu commands -#define MINIMAL_QUIT 1 -#define MINIMAL_TEXT 101 -#define MINIMAL_ABOUT 102 +// ---------------------------------------------------------------------------- +// 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 +}; +// ---------------------------------------------------------------------------- +// 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) + +// ============================================================================ +// implementation +// ============================================================================ + +// ---------------------------------------------------------------------------- +// the application class +// ---------------------------------------------------------------------------- -// `Main program' equivalent, creating windows and returning main app frame -bool MyApp::OnInit(void) +// 'Main program' equivalent: the program execution "starts" here +bool MyApp::OnInit() { - // Create the main frame window - MyFrame *frame = new MyFrame(NULL, "Minimal wxWindows App", 50, 50, 450, 340); + // call the base class initialization method, currently it only parses a + // few common command-line options but it could be do more in the future + if ( !wxApp::OnInit() ) + return false; + + // create the main application window + MyFrame *frame = new MyFrame("Minimal wxWidgets App"); + + // 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; +} - // Give it an icon -#ifdef __WINDOWS__ - frame->SetIcon(wxIcon("mondrian")); -#endif -#ifdef __X__ - frame->SetIcon(wxIcon("aiai.xbm")); -#endif +// ---------------------------------------------------------------------------- +// main frame +// ---------------------------------------------------------------------------- - // Make a menubar - wxMenu *file_menu = new wxMenu; +// 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 *fileMenu = new wxMenu; - 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); + // the "About" item should be in the help menu + wxMenu *helpMenu = new wxMenu; + helpMenu->Append(Minimal_About, "&About\tF1", "Show about dialog"); - // Make a panel with a message - wxPanel *panel = new wxPanel(frame, -1, wxPoint(0, 0), wxSize(400, 200), wxTAB_TRAVERSAL); + fileMenu->Append(Minimal_Quit, "E&xit\tAlt-X", "Quit this program"); - wxStaticText *msg = 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(fileMenu, "&File"); + menuBar->Append(helpMenu, "&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("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& 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& 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); - - dialog.ShowModal(); + wxMessageBox(wxString::Format + ( + "Welcome to %s!\n" + "\n" + "This is the minimal wxWidgets sample\n" + "running under %s.", + wxVERSION_STRING, + wxGetOsDescription() + ), + "About wxWidgets minimal sample", + wxOK | wxICON_INFORMATION, + this); } - -