wxCrafter generated gui - Gtk-Critical Warning

Do you have a question about makefiles, a compiler or IDE you are using and need to know how to set it up for wxWidgets or why it doesn't compile but other IDE's do ? Post your questions here.
Post Reply
martynwheeler
In need of some credit
In need of some credit
Posts: 8
Joined: Thu Feb 11, 2021 7:53 pm

wxCrafter generated gui - Gtk-Critical Warning

Post by martynwheeler »

Hi,

I hope that this the right place to ask about this. I have been experimenting with codelite. I have set up a simple project and am getting a warning in the console.

```
(HelloWorld:76497): Gtk-CRITICAL **: 19:36:17.469: gtk_window_resize: assertion 'height > 0' failed
```

wxCrafter automatically generated c++ code for the gui and here it is:

```

Code: Select all

//////////////////////////////////////////////////////////////////////
// This file was auto-generated by codelite's wxCrafter Plugin
// wxCrafter project file: wxcrafter.wxcp
// Do not modify this file by hand!
//////////////////////////////////////////////////////////////////////

#include "wxcrafter.h"


// Declare the bitmap loading function
extern void wxC9ED9InitBitmapResources();

static bool bBitmapLoaded = false;


MainFrameBaseClass::MainFrameBaseClass(wxWindow* parent, wxWindowID id, const wxString& title, const wxPoint& pos, const wxSize& size, long style)
    : wxFrame(parent, id, title, pos, size, style)
{
    if ( !bBitmapLoaded ) {
        // We need to initialise the default bitmap handler
        wxXmlResource::Get()->AddHandler(new wxBitmapXmlHandler);
        wxC9ED9InitBitmapResources();
        bBitmapLoaded = true;
    }
    
    wxBoxSizer* boxSizer1 = new wxBoxSizer(wxVERTICAL);
    this->SetSizer(boxSizer1);
    
    m_mainPanel = new wxPanel(this, wxID_ANY, wxDefaultPosition, wxDLG_UNIT(this, wxSize(-1,-1)), wxTAB_TRAVERSAL);
    
    boxSizer1->Add(m_mainPanel, 1, wxEXPAND, WXC_FROM_DIP(5));
    
    m_menuBar = new wxMenuBar(0);
    this->SetMenuBar(m_menuBar);
    
    m_name6 = new wxMenu();
    m_menuBar->Append(m_name6, _("File"));
    
    m_menuItem7 = new wxMenuItem(m_name6, wxID_EXIT, _("Exit\tAlt-X"), _("Quit"), wxITEM_NORMAL);
    m_name6->Append(m_menuItem7);
    
    m_name8 = new wxMenu();
    m_menuBar->Append(m_name8, _("Help"));
    
    m_menuItem9 = new wxMenuItem(m_name8, wxID_ABOUT, _("About..."), wxT(""), wxITEM_NORMAL);
    m_name8->Append(m_menuItem9);
    
    m_mainToolbar = this->CreateToolBar(wxTB_FLAT, wxID_ANY);
    m_mainToolbar->SetToolBitmapSize(wxSize(16,16));
    
    SetName(wxT("MainFrameBaseClass"));
    SetSize(wxDLG_UNIT(this, wxSize(800,400)));
    if (GetSizer()) {
         GetSizer()->Fit(this);
    }
    if(GetParent()) {
        CentreOnParent(wxBOTH);
    } else {
        CentreOnScreen(wxBOTH);
    }
#if wxVERSION_NUMBER >= 2900
    if(!wxPersistenceManager::Get().Find(this)) {
        wxPersistenceManager::Get().RegisterAndRestore(this);
    } else {
        wxPersistenceManager::Get().Restore(this);
    }
#endif
    // Connect events
    this->Connect(m_menuItem7->GetId(), wxEVT_COMMAND_MENU_SELECTED, wxCommandEventHandler(MainFrameBaseClass::OnExit), NULL, this);
    this->Connect(m_menuItem9->GetId(), wxEVT_COMMAND_MENU_SELECTED, wxCommandEventHandler(MainFrameBaseClass::OnAbout), NULL, this);
    
}

MainFrameBaseClass::~MainFrameBaseClass()
{
    this->Disconnect(m_menuItem7->GetId(), wxEVT_COMMAND_MENU_SELECTED, wxCommandEventHandler(MainFrameBaseClass::OnExit), NULL, this);
    this->Disconnect(m_menuItem9->GetId(), wxEVT_COMMAND_MENU_SELECTED, wxCommandEventHandler(MainFrameBaseClass::OnAbout), NULL, this);
    
}
```
The lines that are triggering the warning are;

```
if (GetSizer()) {
GetSizer()->Fit(this);
}
```

If i remove these then the warning goes away. The program works, but I was just wondering why this warning was coming about and if anyone knows how to fix it without manually removing those lines?

Thank you in advance,

Martyn
Last edited by DavidHart on Fri Feb 12, 2021 8:20 pm, edited 1 time in total.
Reason: Added code-tags
DavidHart
Site Admin
Site Admin
Posts: 4252
Joined: Thu Jan 12, 2006 6:23 pm
Location: IoW, UK

Re: wxCrafter generated gui - Gtk-Critical Warning

Post by DavidHart »

Hi,

Recent versions of GTK+ have the unfortunate habit of emitting (some might say 'spamming') many such calls. They are almost always false alarms, in that they cause no noticeable problems.

If a program builds and runs successfully, just ignore them.

Regards,

David
martynwheeler
In need of some credit
In need of some credit
Posts: 8
Joined: Thu Feb 11, 2021 7:53 pm

Re: wxCrafter generated gui - Gtk-Critical Warning

Post by martynwheeler »

Okay, thanks for letting me know
Post Reply