Hello World

作業ディレクトリ

$HOME/code/wxwidgets/hello-wxwidgets

main.cpp

/**************************************************************/
/* https://docs.wxwidgets.org/latest/overview_helloworld.html */
/**************************************************************/

// Start of wxWidgets "Hello World" Program
#include <wx/wx.h>
 
class MyApp : public wxApp
{
public:
    bool OnInit() override;
};
 
wxIMPLEMENT_APP(MyApp);
 
class MyFrame : public wxFrame
{
public:
    MyFrame();
 
private:
    void OnHello(wxCommandEvent& event);
    void OnExit(wxCommandEvent& event);
    void OnAbout(wxCommandEvent& event);
};
 
enum
{
    ID_Hello = 1
};
 
bool MyApp::OnInit()
{
    MyFrame *frame = new MyFrame();
    frame->Show(true);
    return true;
}
 
MyFrame::MyFrame()
    : wxFrame(nullptr, wxID_ANY, "Hello World")
{
    wxMenu *menuFile = new wxMenu;
    menuFile->Append(ID_Hello, "&Hello...\tCtrl-H",
                     "Help string shown in status bar for this menu item");
    menuFile->AppendSeparator();
    menuFile->Append(wxID_EXIT);
 
    wxMenu *menuHelp = new wxMenu;
    menuHelp->Append(wxID_ABOUT);
 
    wxMenuBar *menuBar = new wxMenuBar;
    menuBar->Append(menuFile, "&File");
    menuBar->Append(menuHelp, "&Help");
 
    SetMenuBar( menuBar );
 
    CreateStatusBar();
    SetStatusText("Welcome to wxWidgets!");
 
    Bind(wxEVT_MENU, &MyFrame::OnHello, this, ID_Hello);
    Bind(wxEVT_MENU, &MyFrame::OnAbout, this, wxID_ABOUT);
    Bind(wxEVT_MENU, &MyFrame::OnExit, this, wxID_EXIT);
}
 
void MyFrame::OnExit(wxCommandEvent& event)
{
    Close(true);
}
 
void MyFrame::OnAbout(wxCommandEvent& event)
{
    wxMessageBox("This is a wxWidgets Hello World example",
                 "About Hello World", wxOK | wxICON_INFORMATION);
}
 
void MyFrame::OnHello(wxCommandEvent& event)
{
    wxLogMessage("Hello world from wxWidgets!");
}

コンパイル

$ g++ -c main.cpp `wx-config --cxxflags`

コンパイル結果の確認

$ ls -l
合計 200
-rw-rw-r-- 1 freemikan freemikan   1597  5月 23 07:38 main.cpp
-rw-rw-r-- 1 freemikan freemikan 197544  5月 23 07:38 main.o

リンク

$ g++ -o hello-wxwidgets main.o `wx-config --libs`

リンク結果の確認

$ ls -l
合計 348
-rwxrwxr-x 1 freemikan freemikan 151144  5月 23 07:41 hello-wxwidgets
-rw-rw-r-- 1 freemikan freemikan   1597  5月 23 07:38 main.cpp
-rw-rw-r-- 1 freemikan freemikan 197544  5月 23 07:38 main.o

実行

$ ./hello-wxwidgets