wxWidgets/include/wx/msw/icon.h

/////////////////////////////////////////////////////////////////////////////
// Name:        icon.h
// Purpose:     wxIcon class
// Author:      Julian Smart
// Modified by:
// Created:     01/02/97
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_ICON_H_
#define _WX_ICON_H_

#ifdef __GNUG__
    #pragma interface "icon.h"
#endif

#include "wx/bitmap.h"

// ---------------------------------------------------------------------------
// icon data
// ---------------------------------------------------------------------------
class WXDLLEXPORT wxIconRefData: public wxBitmapRefData
{
    friend class WXDLLEXPORT wxBitmap;
    friend class WXDLLEXPORT wxIcon;

public:
    wxIconRefData();
    ~wxIconRefData();

public:
    WXHICON m_hIcon;
};

#define M_ICONDATA ((wxIconRefData *)m_refData)
#define M_ICONHANDLERDATA ((wxIconRefData *)bitmap->GetRefData())

// ---------------------------------------------------------------------------
// Icon
// ---------------------------------------------------------------------------
class WXDLLEXPORT wxIcon : public wxBitmap
{
    DECLARE_DYNAMIC_CLASS(wxIcon)

public:
    wxIcon();

    // Copy constructors
    wxIcon(const wxIcon& icon) { Ref(icon); }

    wxIcon(const char bits[], int width, int height);
    wxIcon(const wxString& name, long flags = wxBITMAP_TYPE_ICO_RESOURCE,
           int desiredWidth = -1, int desiredHeight = -1);
    ~wxIcon();

    bool LoadFile(const wxString& name, long flags = wxBITMAP_TYPE_ICO_RESOURCE,
                  int desiredWidth = -1, int desiredHeight = -1);

    wxIcon& operator = (const wxIcon& icon)
        { if (*this == icon) return (*this); Ref(icon); return *this; }
    bool operator == (const wxIcon& icon) const
        { return m_refData == icon.m_refData; }
    bool operator != (const wxIcon& icon) const
        { return m_refData != icon.m_refData; }

    void SetHICON(WXHICON ico);
    WXHICON GetHICON() const { return (M_ICONDATA ? M_ICONDATA->m_hIcon : 0); }

    bool Ok() const { return (m_refData != NULL && M_ICONDATA->m_hIcon != 0) ; }

    bool FreeResource(bool force = FALSE);
};

// TODO: Put these in separate, private header

class WXDLLEXPORT wxICOFileHandler: public wxBitmapHandler
{
DECLARE_DYNAMIC_CLASS(wxICOFileHandler)

public:
    wxICOFileHandler()
    {
        m_name = "ICO icon file";
        m_extension = "ico";
        m_type = wxBITMAP_TYPE_ICO;
    };

    virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
                          int desiredWidth = -1, int desiredHeight = -1);
};

class WXDLLEXPORT wxICOResourceHandler: public wxBitmapHandler
{
DECLARE_DYNAMIC_CLASS(wxICOResourceHandler)

public:
    wxICOResourceHandler()
    {
        m_name = "ICO resource";
        m_extension = "ico";
        m_type = wxBITMAP_TYPE_ICO_RESOURCE;
    };

    virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
                          int desiredWidth = -1, int desiredHeight = -1);

};

#endif
    // _WX_ICON_H_