Don't create multiple parent-less top level frames in layout sample.

[wxWidgets.git] / include / wx / os2 / dcclient.h

/////////////////////////////////////////////////////////////////////////////
// Name:        wx/os2/dcclient.h
// Purpose:     wxClientDC class
// Author:      David Webster
// Modified by:
// Created:     09/12/99
// RCS-ID:      $Id$
// Copyright:   (c) David Webster
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_DCCLIENT_H_
#define _WX_DCCLIENT_H_

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

#include "wx/dc.h"
#include "wx/os2/dc.h"
#include "wx/dcclient.h"
#include "wx/dynarray.h"

// ----------------------------------------------------------------------------
// array types
// ----------------------------------------------------------------------------

// this one if used by wxPaintDC only
struct WXDLLIMPEXP_FWD_CORE wxPaintDCInfo;

WX_DECLARE_EXPORTED_OBJARRAY(wxPaintDCInfo, wxArrayDCInfo);

// ----------------------------------------------------------------------------
// DC classes
// ----------------------------------------------------------------------------

class WXDLLIMPEXP_CORE wxWindowDCImpl : public wxPMDCImpl
{
public:
    // default ctor
    wxWindowDCImpl( wxDC *owner );

    // Create a DC corresponding to the whole window
    wxWindowDCImpl( wxDC *owner, wxWindow *pWin );

    virtual void DoGetSize(int *pWidth, int *pHeight) const;

protected:
    // initialize the newly created DC
    void InitDC(void);

private:
    SIZEL                   m_PageSize;
    DECLARE_CLASS(wxWindowDCImpl)
    wxDECLARE_NO_COPY_CLASS(wxWindowDCImpl);
}; // end of CLASS wxWindowDC

class WXDLLIMPEXP_CORE wxClientDCImpl : public wxWindowDCImpl
{
public:
    // default ctor
    wxClientDCImpl( wxDC *owner );

    // Create a DC corresponding to the client area of the window
    wxClientDCImpl( wxDC *owner, wxWindow *pWin );

    virtual ~wxClientDCImpl();

    virtual void DoGetSize(int *pWidth, int *pHeight) const;

protected:
    void InitDC(void);

private:
    DECLARE_CLASS(wxClientDCImpl)
    wxDECLARE_NO_COPY_CLASS(wxClientDCImpl);
}; // end of CLASS wxClientDC

class WXDLLIMPEXP_CORE wxPaintDCImpl : public wxClientDCImpl
{
public:
    wxPaintDCImpl( wxDC *owner );

    // Create a DC corresponding for painting the window in OnPaint()
    wxPaintDCImpl( wxDC *owner, wxWindow *pWin );

    virtual ~wxPaintDCImpl();

    // find the entry for this DC in the cache (keyed by the window)
    static WXHDC FindDCInCache(wxWindow* pWin);

protected:
    static wxArrayDCInfo ms_cache;

    // find the entry for this DC in the cache (keyed by the window)
    wxPaintDCInfo* FindInCache(size_t* pIndex = NULL) const;
private:
    DECLARE_CLASS(wxPaintDCImpl)
    wxDECLARE_NO_COPY_CLASS(wxPaintDCImpl);
}; // end of wxPaintDC

#endif
    // _WX_DCCLIENT_H_