Wxwidgets Event Table / Bind () does not fire, Connect () does

Summary:

After adapting the code in the wxwidgets Hello World tutorial to a "module" in the CppMicroServices structure, events registered with the event table or bindings () are not displayed, but events registered with Connect () do.

i.e. When I click on the menu items, I don't get the popup. If I use the Connect(...)

event handler to register, the popup works.

Why is this happening and how can I fix it?

Environment:

• Ubuntu 14.04
• g ++ 4.9
• wxWidgets 3.0.2
• biicode 3.0

Code:

Github repository - for full source. It doesn't build easily (ask me to follow the compilation steps if it helps diagnose this).

// The following are excerpts, I haven't included the namespace declarations / #includes

// === BlankDisplayService.cpp === //
// I know the constructor is "heavy", but this is just a spike
// For this issue, this is the entry point
BlankDisplayService::BlankDisplayService() {
    wxApp::SetInstance( new BlankApplication() );
    openWindow(0, nullptr);
}

BlankDisplayService::~BlankDisplayService() {
    wxTheApp->OnExit();
    wxEntryCleanup();
}

int BlankDisplayService::openWindow(int argc, char** argv) {
    wxEntryStart(argc, argv);
    wxTheApp->OnInit();
    wxTheApp->OnRun();
    return 0;
}



// === BlankApplication.cpp === //
bool BlankApplication::OnInit() {
    BlankWindow *window = new BlankWindow( "Hello World", wxPoint(50, 50), wxSize(450, 340));
    window->Show(true);
    return true;
}


// === BlankWindow.h === //
class BlankWindow : public wxFrame {
private:
    wxStaticText *st1;
    wxStaticText *st2;

public:
    enum Command {
        ID_Hello = 1
    };

    BlankWindow(const wxString& title, const wxPoint& pos, const wxSize& size);
    virtual ~BlankWindow();

private:
    void OnMove(wxMoveEvent & event);
    void OnHello(wxCommandEvent& event);
    void OnExit(wxCommandEvent& event);
    void OnAbout(wxCommandEvent& event);
    wxDECLARE_EVENT_TABLE();
};


// === BlankWindow.cpp === //

wxBEGIN_EVENT_TABLE(sl::desktop::demo::wx::BlankWindow, wxFrame)
    EVT_MENU(ID_Hello,   BlankWindow::OnHello)
    EVT_MENU(wxID_EXIT,  BlankWindow::OnExit)
    EVT_MENU(wxID_ABOUT, BlankWindow::OnAbout)
wxEND_EVENT_TABLE()

BlankWindow::BlankWindow(const wxString& title, const wxPoint& pos, const wxSize& size) : wxFrame(NULL, wxID_ANY, title, pos, size) {
    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!" );


    wxPanel* panel = new wxPanel(this, -1);
    panel->SetSize(200, 100);

    st1 = new wxStaticText(panel, -1, wxT(""), wxPoint(10, 10));
    st2 = new wxStaticText(panel, -1, wxT(""), wxPoint(10, 30));

    Connect(wxEVT_MOVE, wxMoveEventHandler(BlankWindow::OnMove));

    Centre();

    //Connect(wxEVT_MENU, wxCommandEventHandler(BlankWindow::OnHello));
}

BlankWindow::~BlankWindow() {
}

void BlankWindow::OnMove(wxMoveEvent& event) {
    wxPoint size = event.GetPosition();
    st1->SetLabel(wxString::Format(wxT("x: %d"), size.x ));
    st2->SetLabel(wxString::Format(wxT("y: %d"), size.y ));
}

void BlankWindow::OnHello(wxCommandEvent& WXUNUSED(event)) {
    wxLogMessage("Hello world from wxWidgets!");
}

void BlankWindow::OnExit(wxCommandEvent& WXUNUSED(event)) {
    Close(true);
}

void BlankWindow::OnAbout(wxCommandEvent& event) {
    wxMessageBox("This is a wxWidgets' Hello world sample", "About Hello World", wxOK | wxICON_INFORMATION );
}

      

        
        
        
      

    

Notes:

I use biicode to manage my dependencies, so the imports may not be what you are used to seeing.

I'm pretty sure it all works on the main thread.

Update:

Offsetting the call openWindow(...)

from the BlankDisplayService constructor to the test class triggered events declared using the event table. However, I have not been able to determine why: threadIds are exactly the same, whether they are called from a test or inside a constructor:

If that doesn't work:

[MAIN] Thread Id: 140460630185856
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from SlDesktopDemoWxBundle
[ RUN      ] SlDesktopDemoWxBundle.DisplaysWindow
[TEST] Thread Id: 140460630185856
[CSTR] Thread Id: 140460630185856
[OPEN] Thread Id: 140460630185856
^C

      

        
        
        
      

    

When it works:

[CSTR] Thread Id: 139695227554368
[MAIN] Thread Id: 139695227554368
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from SlDesktopDemoWxBundle
[ RUN      ] SlDesktopDemoWxBundle.DisplaysWindow
[TEST] Thread Id: 139695227554368
[OPEN] Thread Id: 139695227554368
[       OK ] SlDesktopDemoWxBundle.DisplaysWindow (3165 ms)
[----------] 1 test from SlDesktopDemoWxBundle (3165 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test case ran. (3166 ms total)
[  PASSED  ] 1 test.