1/////////////////////////////////////////////////////////////////////////////
2// Name:        wx/msw/dcmemory.h
3// Purpose:     wxMemoryDC class
4// Author:      Julian Smart
5// Modified by:
6// Created:     01/02/97
7// RCS-ID:      $Id: dcmemory.h 48236 2007-08-20 23:43:32Z KO $
8// Copyright:   (c) Julian Smart
9// Licence:     wxWindows licence
10/////////////////////////////////////////////////////////////////////////////
11
12#ifndef _WX_DCMEMORY_H_
13#define _WX_DCMEMORY_H_
14
15#include "wx/dcclient.h"
16
17class WXDLLEXPORT wxMemoryDC : public wxDC, public wxMemoryDCBase
18{
19public:
20    wxMemoryDC() { CreateCompatible(NULL); Init(); }
21    wxMemoryDC(wxBitmap& bitmap) { CreateCompatible(NULL); Init(); SelectObject(bitmap); }
22    wxMemoryDC(wxDC *dc); // Create compatible DC
23
24
25protected:
26    // override some base class virtuals
27    virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
28    virtual void DoGetSize(int* width, int* height) const;
29    virtual void DoSelect(const wxBitmap& bitmap);
30
31    virtual wxBitmap DoGetAsBitmap(const wxRect* subrect) const
32    { return subrect == NULL ? GetSelectedBitmap() : GetSelectedBitmap().GetSubBitmapOfHDC(*subrect, GetHDC() );}
33
34    // create DC compatible with the given one or screen if dc == NULL
35    bool CreateCompatible(wxDC *dc);
36
37    // initialize the newly created DC
38    void Init();
39
40private:
41    DECLARE_DYNAMIC_CLASS_NO_COPY(wxMemoryDC)
42};
43
44#endif
45    // _WX_DCMEMORY_H_
46