remove always-true tests of unsigned >= 0

[wxWidgets.git] / src / generic / panelg.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/generic/panelg.cpp
// Purpose:     wxPanel and the keyboard handling code
// Author:      Julian Smart, Robert Roebling, Vadim Zeitlin
// Modified by:
// Created:     04/01/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#ifndef WX_PRECOMP
    #include "wx/object.h"
    #include "wx/font.h"
    #include "wx/colour.h"
    #include "wx/settings.h"
    #include "wx/log.h"
    #include "wx/panel.h"
    #include "wx/containr.h"
#endif

// ----------------------------------------------------------------------------
// wxWin macros
// ----------------------------------------------------------------------------

BEGIN_EVENT_TABLE(wxPanel, wxWindow)
    WX_EVENT_TABLE_CONTROL_CONTAINER(wxPanel)
END_EVENT_TABLE()

// ============================================================================
// implementation
// ============================================================================

WX_DELEGATE_TO_CONTROL_CONTAINER(wxPanel, wxWindow)

// ----------------------------------------------------------------------------
// wxPanel creation
// ----------------------------------------------------------------------------

void wxPanel::Init()
{
    WX_INIT_CONTROL_CONTAINER();
}

bool wxPanel::Create(wxWindow *parent, wxWindowID id,
                     const wxPoint& pos,
                     const wxSize& size,
                     long style,
                     const wxString& name)
{
    if ( !wxWindow::Create(parent, id, pos, size, style, name) )
        return false;

    // so that non-solid background renders correctly under GTK+:
    SetThemeEnabled(true);

#if defined(__WXWINCE__) && (defined(__POCKETPC__) || defined(__SMARTPHONE__))
    // Required to get solid control backgrounds under WinCE
    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
#endif

    return true;
}

wxPanel::~wxPanel()
{
}

void wxPanel::InitDialog()
{
    wxInitDialogEvent event(GetId());
    event.SetEventObject(this);
    GetEventHandler()->ProcessEvent(event);
}

#ifdef __WXMSW__

bool wxPanel::HasTransparentBackground()
{
    for ( wxWindow *win = GetParent(); win; win = win->GetParent() )
    {
        if ( win->MSWHasInheritableBackground() )
            return true;

        if ( win->IsTopLevel() )
            break;
    }

    return false;
}

#endif // __WXMSW__