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///////////////////////////////////////////////////////////////////////////////
// Name: wx/msw/ole/dataform.h
// Purpose: declaration of the wxDataFormat class
// Author: Vadim Zeitlin
// Modified by:
// Created: 19.10.99 (extracted from msw/ole/dataobj.h)
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_MSW_OLE_DATAFORM_H
#define _WX_MSW_OLE_DATAFORM_H
// ----------------------------------------------------------------------------
// wxDataFormat identifies the single format of data
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_CORE wxDataFormat
{
public:
// the clipboard formats under Win32 are WORD's
typedef unsigned short NativeFormat;
wxDataFormat(NativeFormat format = wxDF_INVALID) { m_format = format; }
// we need constructors from all string types as implicit conversions to
// wxString don't apply when we already rely on implicit conversion of a,
// for example, "char *" string to wxDataFormat, and existing code does it
wxDataFormat(const wxString& format) { SetId(format); }
wxDataFormat(const char *format) { SetId(format); }
wxDataFormat(const wchar_t *format) { SetId(format); }
wxDataFormat(const wxCStrData& format) { SetId(format); }
wxDataFormat& operator=(NativeFormat format)
{ m_format = format; return *this; }
wxDataFormat& operator=(const wxDataFormat& format)
{ m_format = format.m_format; return *this; }
// default copy ctor/assignment operators ok
// comparison (must have both versions)
bool operator==(wxDataFormatId format) const;
bool operator!=(wxDataFormatId format) const;
bool operator==(const wxDataFormat& format) const;
bool operator!=(const wxDataFormat& format) const;
// explicit and implicit conversions to NativeFormat which is one of
// standard data types (implicit conversion is useful for preserving the
// compatibility with old code)
NativeFormat GetFormatId() const { return m_format; }
operator NativeFormat() const { return m_format; }
// this works with standard as well as custom ids
void SetType(NativeFormat format) { m_format = format; }
NativeFormat GetType() const { return m_format; }
// string ids are used for custom types - this SetId() must be used for
// application-specific formats
wxString GetId() const;
void SetId(const wxString& format);
// returns true if the format is one of those defined in wxDataFormatId
bool IsStandard() const { return m_format > 0 && m_format < wxDF_PRIVATE; }
private:
NativeFormat m_format;
};
#endif // _WX_MSW_OLE_DATAFORM_H
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