/**********************************************************************

??Audacity:?A?Digital?Audio?Editor

??FileDialog.cpp

??Leland?Lucius

*******************************************************************//**

\class?FileDialog
\brief?Dialog?used?to?present?platform?specific?“Save?As“?dialog?with
custom?controls.

*//*******************************************************************/

#include?“FileDialog.h“

void?FileDialog::EnableButton（wxString?label?fdCallback?cb?void?*data）
{
???m_buttonlabel?=?label;
???m_callback?=?cb;
???m_cbdata?=?data;
}

void?FileDialog::ClickButton（int?index）
{
???if?（m_callback）
???{
??????m_callback（m_cbdata?index）;
???}
}

/////////////////////////////////////////////////////////////////////////////
//?Name:????????common/fldlgcmn.cpp
//?Purpose:?????wxFileDialog?common?functions
//?Author:??????John?Labenski
//?Modified?by:?Leland?Lucius
//?Created:?????14.06.03?（extracted?from?src/*/filedlg.cpp）
//?RCS-ID:??????$Id:?FileDialog.cppv?1.8?2008-10-05?14:48:59?richardash1981?Exp?$
//?Copyright:???（c）?Robert?Roebling
//?Licence:?????wxWindows?licence
//
//?Modified?for?Audacity?to?support?an?additional?button?on?Save?dialogs
//
/////////////////////////////////////////////////////////////////////////////

//----------------------------------------------------------------------------
//?FileDialog?convenience?functions
//----------------------------------------------------------------------------

wxString?FileSelector（const?wxChar?*title
??????????????????????const?wxChar?*defaultDir
??????????????????????const?wxChar?*defaultFileName
??????????????????????const?wxChar?*defaultExtension
??????????????????????const?wxChar?*filter
??????????????????????int?flags
??????????????????????wxWindow?*parent
??????????????????????wxString?label?fdCallback?cb?void?*cbdata）
{
???//?The?defaultExtension?if?non-NULL?is
???//?appended?to?the?filename?if?the?user?fails?to?type?an?extension.?The?new
???//?implementation?（taken?from?wxFileSelectorEx）?appends?the?extension
???//?automatically?by?looking?at?the?filter?specification.?In?fact?this
???//?should?be?better?than?the?native?Microsoft?implementation?because
???//?Windows?only?allows?*one*?default?extension?whereas?here?we?do?the
???//?right?thing?depending?on?the?filter?the?user?has?chosen.

???//?If?there‘s?a?default?extension?specified?but?no?filter?we?create?a
???//?suitable?filter.

???wxString?filter2;
???if?（defaultExtension?&&?!filter）
??????filter2?=?wxString（wxT（“*.“））?+?defaultExtension;
???else?if?（filter）
??????filter2?=?filter;

???wxString?defaultDirString;
???if?（defaultDir）
??????defaultDirString?=?defaultDir;

???wxString?defaultFilenameString;
???if?（defaultFileName）
??????defaultFilenameString?=?defaultFileName;

???FileDialog?fileDialog（parent?title?defaultDirString
?????????????????????????defaultFilenameString?filter2
?????????????????????????flags）;

???//?Enable?the?extra?button?if?desired
???if?（（flags?&?wxFD_SAVE）?&&?（cb?!=