1e6feb95a7
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10673 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
246 lines
7.8 KiB
C++
246 lines
7.8 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: dc.h
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// Purpose: wxDC class
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// Author: Julian Smart
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// Modified by:
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// Created: 01/02/97
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// RCS-ID: $Id$
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// Copyright: (c) Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_DC_H_
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#define _WX_DC_H_
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#ifdef __GNUG__
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#pragma interface "dc.h"
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#endif
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#include "wx/defs.h"
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#include "wx/dc.h"
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// ---------------------------------------------------------------------------
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// macros
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// ---------------------------------------------------------------------------
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// Logical to device
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// Absolute
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#define XLOG2DEV(x) (x)
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#define YLOG2DEV(y) (y)
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// Relative
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#define XLOG2DEVREL(x) (x)
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#define YLOG2DEVREL(y) (y)
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// Device to logical
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// Absolute
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#define XDEV2LOG(x) (x)
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#define YDEV2LOG(y) (y)
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// Relative
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#define XDEV2LOGREL(x) (x)
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#define YDEV2LOGREL(y) (y)
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/*
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* Have the same macros as for XView but not for every operation:
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* just for calculating window/viewport extent (a better way of scaling).
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*/
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// Logical to device
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// Absolute
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#define MS_XLOG2DEV(x) LogicalToDevice(x)
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#define MS_YLOG2DEV(y) LogicalToDevice(y)
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// Relative
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#define MS_XLOG2DEVREL(x) LogicalToDeviceXRel(x)
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#define MS_YLOG2DEVREL(y) LogicalToDeviceYRel(y)
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// Device to logical
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// Absolute
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#define MS_XDEV2LOG(x) DeviceToLogicalX(x)
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#define MS_YDEV2LOG(y) DeviceToLogicalY(y)
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// Relative
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#define MS_XDEV2LOGREL(x) DeviceToLogicalXRel(x)
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#define MS_YDEV2LOGREL(y) DeviceToLogicalYRel(y)
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#define YSCALE(y) (yorigin - (y))
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#define wx_round(a) (int)((a)+.5)
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class WXDLLEXPORT wxDC : public wxDCBase
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{
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public:
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wxDC();
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~wxDC();
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// implement base class pure virtuals
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// ----------------------------------
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virtual void Clear();
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virtual bool StartDoc(const wxString& message);
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virtual void EndDoc();
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virtual void StartPage();
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virtual void EndPage();
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virtual void SetFont(const wxFont& font);
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virtual void SetPen(const wxPen& pen);
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virtual void SetBrush(const wxBrush& brush);
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virtual void SetBackground(const wxBrush& brush);
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virtual void SetBackgroundMode(int mode);
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virtual void SetPalette(const wxPalette& palette);
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virtual void DestroyClippingRegion();
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virtual wxCoord GetCharHeight() const;
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virtual wxCoord GetCharWidth() const;
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virtual void DoGetTextExtent(const wxString& string,
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wxCoord *x, wxCoord *y,
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wxCoord *descent = NULL,
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wxCoord *externalLeading = NULL,
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wxFont *theFont = NULL) const;
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virtual bool CanDrawBitmap() const;
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virtual bool CanGetTextExtent() const;
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virtual int GetDepth() const;
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virtual wxSize GetPPI() const;
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virtual void SetMapMode(int mode);
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virtual void SetUserScale(double x, double y);
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virtual void SetSystemScale(double x, double y);
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virtual void SetLogicalScale(double x, double y);
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virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
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virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
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virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
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virtual void SetLogicalFunction(int function);
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// implementation from now on
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// --------------------------
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virtual void SetRop(WXHDC cdc);
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virtual void SelectOldObjects(WXHDC dc);
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wxWindow *GetWindow() const { return m_canvas; }
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void SetWindow(wxWindow *win) { m_canvas = win; }
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WXHDC GetHDC() const { return m_hDC; }
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void SetHDC(WXHDC dc, bool bOwnsDC = FALSE)
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{
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m_hDC = dc;
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m_bOwnsDC = bOwnsDC;
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}
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const wxBitmap& GetSelectedBitmap() const { return m_selectedBitmap; }
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wxBitmap& GetSelectedBitmap() { return m_selectedBitmap; }
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// update the internal clip box variables
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void UpdateClipBox();
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protected:
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virtual void DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
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int style = wxFLOOD_SURFACE);
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virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
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virtual void DoDrawPoint(wxCoord x, wxCoord y);
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virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
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virtual void DoDrawArc(wxCoord x1, wxCoord y1,
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wxCoord x2, wxCoord y2,
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wxCoord xc, wxCoord yc);
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virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
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wxCoord width, wxCoord height);
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virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
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double sa, double ea);
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virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
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virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
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wxCoord width, wxCoord height,
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double radius);
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virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
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virtual void DoCrossHair(wxCoord x, wxCoord y);
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virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
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virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
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bool useMask = FALSE);
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virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
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virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
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double angle);
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virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
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wxDC *source, wxCoord xsrc, wxCoord ysrc,
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int rop = wxCOPY, bool useMask = FALSE);
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// this is gnarly - we can't even call this function DoSetClippingRegion()
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// because of virtual function hiding
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virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
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virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
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wxCoord width, wxCoord height);
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virtual void DoGetClippingRegion(wxCoord *x, wxCoord *y,
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wxCoord *width, wxCoord *height)
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{
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GetClippingBox(x, y, width, height);
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}
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virtual void DoGetSize(int *width, int *height) const;
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virtual void DoGetSizeMM(int* width, int* height) const;
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virtual void DoDrawLines(int n, wxPoint points[],
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wxCoord xoffset, wxCoord yoffset);
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virtual void DoDrawPolygon(int n, wxPoint points[],
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wxCoord xoffset, wxCoord yoffset,
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int fillStyle = wxODDEVEN_RULE);
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// common part of DoDrawText() and DoDrawRotatedText()
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void DrawAnyText(const wxString& text, wxCoord x, wxCoord y);
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// MSW-specific member variables
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int m_windowExtX;
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int m_windowExtY;
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// the window associated with this DC (may be NULL)
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wxWindow *m_canvas;
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wxBitmap m_selectedBitmap;
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// TRUE => DeleteDC() in dtor, FALSE => only ReleaseDC() it
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bool m_bOwnsDC:1;
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// our HDC
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WXHDC m_hDC;
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// Store all old GDI objects when do a SelectObject, so we can select them
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// back in (this unselecting user's objects) so we can safely delete the
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// DC.
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WXHBITMAP m_oldBitmap;
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WXHPEN m_oldPen;
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WXHBRUSH m_oldBrush;
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WXHFONT m_oldFont;
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WXHPALETTE m_oldPalette;
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DECLARE_DYNAMIC_CLASS(wxDC)
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};
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// ----------------------------------------------------------------------------
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// wxDCTemp: a wxDC which doesn't free the given HDC (used by wxWindows
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// only/mainly)
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxDCTemp : public wxDC
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{
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public:
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wxDCTemp(WXHDC hdc) { SetHDC(hdc); }
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virtual ~wxDCTemp() { SetHDC((WXHDC)NULL); }
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};
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#endif
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// _WX_DC_H_
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