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241
wxWidgets/include/wx/bitmap.h
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wxWidgets/include/wx/bitmap.h
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///////////////////////////////////////////////////////////////////////////////
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// Name: wx/bitmap.h
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// Purpose: wxBitmap class interface
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// Author: Vaclav Slavik
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// Modified by:
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// Created: 22.04.01
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// RCS-ID: $Id: bitmap.h 49563 2007-10-31 20:46:21Z VZ $
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// Copyright: (c) wxWidgets team
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_BITMAP_H_BASE_
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#define _WX_BITMAP_H_BASE_
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "wx/string.h"
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#include "wx/gdicmn.h" // for wxBitmapType
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#include "wx/colour.h"
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class WXDLLIMPEXP_FWD_CORE wxBitmap;
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class WXDLLIMPEXP_FWD_CORE wxBitmapHandler;
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class WXDLLIMPEXP_FWD_CORE wxIcon;
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class WXDLLIMPEXP_FWD_CORE wxImage;
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class WXDLLIMPEXP_FWD_CORE wxMask;
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class WXDLLIMPEXP_FWD_CORE wxPalette;
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// ----------------------------------------------------------------------------
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// wxVariant support
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// ----------------------------------------------------------------------------
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#if wxUSE_VARIANT
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#include "wx/variant.h"
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DECLARE_VARIANT_OBJECT_EXPORTED(wxBitmap,WXDLLEXPORT)
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#endif
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// ----------------------------------------------------------------------------
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// wxMask represents the transparent area of the bitmap
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxMaskBase : public wxObject
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{
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public:
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// create the mask from bitmap pixels of the given colour
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bool Create(const wxBitmap& bitmap, const wxColour& colour);
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#if wxUSE_PALETTE
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// create the mask from bitmap pixels with the given palette index
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bool Create(const wxBitmap& bitmap, int paletteIndex);
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#endif // wxUSE_PALETTE
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// create the mask from the given mono bitmap
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bool Create(const wxBitmap& bitmap);
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protected:
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// this function is called from Create() to free the existing mask data
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virtual void FreeData() = 0;
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// these functions must be overridden to implement the corresponding public
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// Create() methods, they shouldn't call FreeData() as it's already called
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// by the public wrappers
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virtual bool InitFromColour(const wxBitmap& bitmap,
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const wxColour& colour) = 0;
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virtual bool InitFromMonoBitmap(const wxBitmap& bitmap) = 0;
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};
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#if defined(__WXMGL__) || \
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defined(__WXDFB__) || \
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defined(__WXMAC__) || \
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defined(__WXGTK__) || \
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defined(__WXCOCOA__) || \
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defined(__WXMOTIF__) || \
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defined(__WXX11__)
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#define wxUSE_BITMAP_BASE 1
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#else
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#define wxUSE_BITMAP_BASE 0
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#endif
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// Only used by some ports
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// FIXME -- make all ports (but MSW which uses wxGDIImage) use these base classes
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#if wxUSE_BITMAP_BASE
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// ----------------------------------------------------------------------------
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// wxBitmapHandler: class which knows how to create/load/save bitmaps in
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// different formats
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxBitmapHandlerBase : public wxObject
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{
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public:
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wxBitmapHandlerBase() { m_type = wxBITMAP_TYPE_INVALID; }
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virtual ~wxBitmapHandlerBase() { }
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virtual bool Create(wxBitmap *bitmap, const void* data, long flags,
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int width, int height, int depth = 1);
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virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
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int desiredWidth, int desiredHeight);
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virtual bool SaveFile(const wxBitmap *bitmap, const wxString& name,
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int type, const wxPalette *palette = NULL);
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void SetName(const wxString& name) { m_name = name; }
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void SetExtension(const wxString& ext) { m_extension = ext; }
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void SetType(wxBitmapType type) { m_type = type; }
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const wxString& GetName() const { return m_name; }
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const wxString& GetExtension() const { return m_extension; }
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wxBitmapType GetType() const { return m_type; }
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private:
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wxString m_name;
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wxString m_extension;
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wxBitmapType m_type;
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DECLARE_ABSTRACT_CLASS(wxBitmapHandlerBase)
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};
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class WXDLLEXPORT wxBitmapBase : public wxGDIObject
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{
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public:
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/*
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Derived class must implement these:
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wxBitmap();
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wxBitmap(int width, int height, int depth = -1);
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wxBitmap(const char bits[], int width, int height, int depth = 1);
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wxBitmap(const char* const* bits);
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wxBitmap(const wxString &filename, wxBitmapType type = wxBITMAP_TYPE_XPM);
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wxBitmap(const wxImage& image, int depth = -1);
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bool Create(int width, int height, int depth = -1);
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static void InitStandardHandlers();
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*/
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virtual bool Ok() const { return IsOk(); }
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virtual bool IsOk() const = 0;
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virtual int GetHeight() const = 0;
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virtual int GetWidth() const = 0;
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virtual int GetDepth() const = 0;
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virtual wxImage ConvertToImage() const = 0;
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virtual wxMask *GetMask() const = 0;
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virtual void SetMask(wxMask *mask) = 0;
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virtual wxBitmap GetSubBitmap(const wxRect& rect) const = 0;
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virtual bool SaveFile(const wxString &name, wxBitmapType type,
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const wxPalette *palette = (wxPalette *)NULL) const = 0;
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virtual bool LoadFile(const wxString &name, wxBitmapType type) = 0;
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/*
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If raw bitmap access is supported (see wx/rawbmp.h), the following
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methods should be implemented:
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virtual bool GetRawData(wxRawBitmapData *data) = 0;
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virtual void UngetRawData(wxRawBitmapData *data) = 0;
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*/
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#if wxUSE_PALETTE
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virtual wxPalette *GetPalette() const = 0;
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virtual void SetPalette(const wxPalette& palette) = 0;
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#endif // wxUSE_PALETTE
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// copies the contents and mask of the given (colour) icon to the bitmap
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virtual bool CopyFromIcon(const wxIcon& icon) = 0;
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// implementation:
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virtual void SetHeight(int height) = 0;
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virtual void SetWidth(int width) = 0;
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virtual void SetDepth(int depth) = 0;
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// Format handling
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static inline wxList& GetHandlers() { return sm_handlers; }
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static void AddHandler(wxBitmapHandlerBase *handler);
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static void InsertHandler(wxBitmapHandlerBase *handler);
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static bool RemoveHandler(const wxString& name);
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static wxBitmapHandler *FindHandler(const wxString& name);
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static wxBitmapHandler *FindHandler(const wxString& extension, wxBitmapType bitmapType);
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static wxBitmapHandler *FindHandler(wxBitmapType bitmapType);
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//static void InitStandardHandlers();
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// (wxBitmap must implement this one)
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static void CleanUpHandlers();
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// this method is only used by the generic implementation of wxMask
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// currently but could be useful elsewhere in the future: it can be
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// overridden to quantize the colour to correspond to bitmap colour depth
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// if necessary; default implementation simply returns the colour as is
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virtual wxColour QuantizeColour(const wxColour& colour) const
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{
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return colour;
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}
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protected:
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static wxList sm_handlers;
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DECLARE_ABSTRACT_CLASS(wxBitmapBase)
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};
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#endif // wxUSE_BITMAP_BASE
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#if defined(__WXPALMOS__)
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#include "wx/palmos/bitmap.h"
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#elif defined(__WXMSW__)
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#include "wx/msw/bitmap.h"
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#elif defined(__WXMOTIF__)
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#include "wx/x11/bitmap.h"
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#elif defined(__WXGTK20__)
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#include "wx/gtk/bitmap.h"
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#elif defined(__WXGTK__)
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#include "wx/gtk1/bitmap.h"
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#elif defined(__WXX11__)
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#include "wx/x11/bitmap.h"
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#elif defined(__WXMGL__)
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#include "wx/mgl/bitmap.h"
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#elif defined(__WXDFB__)
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#include "wx/dfb/bitmap.h"
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#elif defined(__WXMAC__)
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#include "wx/mac/bitmap.h"
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#elif defined(__WXCOCOA__)
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#include "wx/cocoa/bitmap.h"
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#elif defined(__WXPM__)
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#include "wx/os2/bitmap.h"
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#endif
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// we must include generic mask.h after wxBitmap definition
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#if defined(__WXMGL__) || defined(__WXDFB__)
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#define wxUSE_GENERIC_MASK 1
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#else
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#define wxUSE_GENERIC_MASK 0
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#endif
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#if wxUSE_GENERIC_MASK
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#include "wx/generic/mask.h"
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#endif
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#endif // _WX_BITMAP_H_BASE_
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