started writing wxDisplay sample
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@19381 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
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Vadim Zeitlin
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samples/display/display.cpp
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226
samples/display/display.cpp
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/////////////////////////////////////////////////////////////////////////////
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// Name: display.cpp
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// Purpose: wxWindows sample showing the features of wxDisplay class
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 23.02.03
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// RCS-ID: $Id$
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// Copyright: (c) Vadim Zeitlin <vadim@wxwindows.org>
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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// for compilers that support precompilation, includes "wx/wx.h".from here
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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// for all others, include the necessary headers explicitly
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#ifndef WX_PRECOMP
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#include "wx/app.h"
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#include "wx/frame.h"
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#include "wx/stattext.h"
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#include "wx/layout.h"
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#endif
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#include "wx/notebook.h"
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#include "wx/display.h"
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// ----------------------------------------------------------------------------
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// private classes
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// ----------------------------------------------------------------------------
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// Define a new application type, each program should derive a class from wxApp
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class MyApp : public wxApp
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{
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public:
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// override base class virtuals
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// ----------------------------
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// this one is called on application startup and is a good place for the app
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// initialization (doing it here and not in the ctor allows to have an error
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// return: if OnInit() returns false, the application terminates)
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virtual bool OnInit();
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};
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// Define a new frame type: this is going to be our main frame
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class MyFrame : public wxFrame
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{
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public:
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// ctor(s)
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MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size,
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long style = wxDEFAULT_FRAME_STYLE);
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// event handlers (these functions should _not_ be virtual)
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void OnQuit(wxCommandEvent& event);
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void OnAbout(wxCommandEvent& event);
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private:
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// any class wishing to process wxWindows events must use this macro
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DECLARE_EVENT_TABLE()
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};
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// ----------------------------------------------------------------------------
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// constants
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// ----------------------------------------------------------------------------
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// IDs for the controls and the menu commands
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enum
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{
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// menu items
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Display_Quit = 1,
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// it is important for the id corresponding to the "About" command to have
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// this standard value as otherwise it won't be handled properly under Mac
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// (where it is special and put into the "Apple" menu)
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Display_About = wxID_ABOUT
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};
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// ----------------------------------------------------------------------------
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// event tables and other macros for wxWindows
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// ----------------------------------------------------------------------------
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// the event tables connect the wxWindows events with the functions (event
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// handlers) which process them. It can be also done at run-time, but for the
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// simple menu events like this the static method is much simpler.
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BEGIN_EVENT_TABLE(MyFrame, wxFrame)
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EVT_MENU(Display_Quit, MyFrame::OnQuit)
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EVT_MENU(Display_About, MyFrame::OnAbout)
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END_EVENT_TABLE()
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// Create a new application object: this macro will allow wxWindows to create
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// the application object during program execution (it's better than using a
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// static object for many reasons) and also declares the accessor function
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// wxGetApp() which will return the reference of the right type (i.e. MyApp and
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// not wxApp)
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IMPLEMENT_APP(MyApp)
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// ============================================================================
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// implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// the application class
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// ----------------------------------------------------------------------------
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// 'Main program' equivalent: the program execution "starts" here
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bool MyApp::OnInit()
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{
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// create the main application window
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MyFrame *frame = new MyFrame(_("Display wxWindows Sample"),
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wxPoint(50, 50), wxSize(450, 340));
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// and show it (the frames, unlike simple controls, are not shown when
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// created initially)
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frame->Show(TRUE);
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// success: wxApp::OnRun() will be called which will enter the main message
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// loop and the application will run. If we returned FALSE here, the
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// application would exit immediately.
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return TRUE;
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}
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// ----------------------------------------------------------------------------
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// main frame
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// ----------------------------------------------------------------------------
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// frame constructor
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MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size, long style)
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: wxFrame(NULL, -1, title, pos, size, style)
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{
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// set the frame icon
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SetIcon(wxICON(mondrian));
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#if wxUSE_MENUS
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// create a menu bar
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wxMenu *menuFile = new wxMenu;
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// the "About" item should be in the help menu
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wxMenu *helpMenu = new wxMenu;
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helpMenu->Append(Display_About, _("&About...\tF1"), _("Show about dialog"));
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menuFile->Append(Display_Quit, _("E&xit\tAlt-X"), _("Quit this program"));
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// now append the freshly created menu to the menu bar...
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wxMenuBar *menuBar = new wxMenuBar();
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menuBar->Append(menuFile, _("&File"));
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menuBar->Append(helpMenu, _("&Help"));
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// ... and attach this menu bar to the frame
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SetMenuBar(menuBar);
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#endif // wxUSE_MENUS
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// create child controls
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wxNotebook *notebook = new wxNotebook(this, -1);
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const size_t count = wxDisplay::GetCount();
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for ( size_t n = 0; n < count; n++ )
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{
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wxDisplay display(n);
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wxWindow *page = new wxPanel(notebook, -1);
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// create 2 column flex grid sizer with growable 2nd column
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wxFlexGridSizer *sizer = new wxFlexGridSizer(2, 10, 20);
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sizer->AddGrowableCol(1);
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const wxRect r(display.GetGeometry());
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sizer->Add(new wxStaticText(page, -1, _T("Geometry: ")));
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sizer->Add(new wxStaticText
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(
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page,
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-1,
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wxString::Format(_T("(%d, %d)-(%d, %d)"),
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r.x, r.y,
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r.x + r.width, r.y + r.height)
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));
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sizer->Add(new wxStaticText(page, -1, _T("Depth: ")));
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sizer->Add(new wxStaticText
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(
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page,
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-1,
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wxString::Format(_T("%d bpp"), display.GetDepth())
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));
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sizer->Add(new wxStaticText(page, -1, _T("Colour: ")));
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sizer->Add(new wxStaticText(page, -1, display.IsColour() ? _T("Yes")
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: _T("No")));
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// add it to another sizer to have borders around it
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wxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
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sizerTop->Add(sizer, 1, wxALL | wxEXPAND, 10);
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page->SetSizer(sizerTop);
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notebook->AddPage(page,
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wxString::Format(_T("Display %lu"), (unsigned long)n));
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}
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}
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// event handlers
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void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
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{
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// TRUE is to force the frame to close
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Close(TRUE);
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}
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void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
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{
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wxMessageBox(_T("Demo program for wxDisplay class.\n\n(c) 2003 Vadim Zeitlin"),
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_T("About Display Sample"),
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wxOK | wxICON_INFORMATION,
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this);
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}
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