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POLYLINE
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POLYLINE.H
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1993-04-14
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/*
* POLYLINE.H
* Polyline Component Object Chapter 6
*
* Definitions and function prototypes for the PolyLine DLL object.
*
* Copyright (c)1993 Microsoft Corporation, All Rights Reserved
*
* Kraig Brockschmidt, Software Design Engineer
* Microsoft Systems Developer Relations
*
* Internet : kraigb@microsoft.com
* Compuserve: >INTERNET:kraigb@microsoft.com
*/
#ifndef _POLYLINE_H_
#define _POLYLINE_H_
#include <windows.h>
#include <ole2.h>
#include <classlib.h>
#include <bookguid.h>
#include <ipoly6.h>
#include "resource.h"
//Classname
#define SZCLASSPOLYLINE "polyline"
#define HIMETRIC_PER_INCH 2540
//Window extra bytes and offsets
#define CBPOLYLINEWNDEXTRA (sizeof(LONG))
#define PLWL_STRUCTURE 0
//DLLPOLY.CPP
//This class factory object creates Polyline objects.
class __far CPolylineClassFactory : public IClassFactory
{
protected:
ULONG m_cRef; //Reference count on object
public:
CPolylineClassFactory(void);
~CPolylineClassFactory(void);
//IUnknown members
STDMETHODIMP QueryInterface(REFIID, LPVOID FAR *);
STDMETHODIMP_(ULONG) AddRef(void);
STDMETHODIMP_(ULONG) Release(void);
//IClassFactory members
STDMETHODIMP CreateInstance(LPUNKNOWN, REFIID, LPVOID FAR *);
STDMETHODIMP LockServer(BOOL);
};
typedef CPolylineClassFactory FAR * LPCPolylineClassFactory;
//POLYWIN.CPP
LRESULT __export FAR PASCAL PolylineWndProc(HWND, UINT, WPARAM, LPARAM);
//Type for an object-destroyed callback
typedef void (FAR PASCAL *LPFNDESTROYED)(void);
#define CFORMATETCGET 3
#define CFORMATETCSET 1
//POLYLINE.CPP
class __far CPolyline : public IUnknown
{
friend LRESULT __export FAR PASCAL PolylineWndProc(HWND, UINT, WPARAM, LPARAM);
//Make any contained interfaces your friends so they can get at privates
friend class CImpIPolyline;
friend class CImpIPersistStorage;
friend class CImpIDataObject;
protected:
HWND m_hWnd;
HINSTANCE m_hInst;
ULONG m_cRef; //Object reference count.
LPUNKNOWN m_punkOuter; //Controlling Unknown for aggregation
LPFNDESTROYED m_pfnDestroy; //Function to call on closure.
BOOL m_fDirty; //Have we changed?
POLYLINEDATA m_pl; //Our actual data.
LPCStringTable m_pST; //Object strings
UINT m_cf; //Object clipboard format.
CLSID m_clsID; //Current CLSID
IID m_iID; //Custom interface IID.
//Contained interfaces
LPPOLYLINE m_pIPolyline;
LPPERSISTSTORAGE m_pIPersistStorage;
//CHAPTER6MOD
LPDATAOBJECT m_pIDataObject;
LPDATAADVISEHOLDER m_pIDataAdviseHolder;
//Arrays for IDataObject::EnumFormatEtc
ULONG m_cfeGet;
FORMATETC m_rgfeGet[CFORMATETCGET];
ULONG m_cfeSet;
FORMATETC m_rgfeSet[CFORMATETCSET];
//End CHAPTER6MOD
LPPOLYLINEADVISESINK m_pAdv;
protected:
void PointScale(LPRECT, LPPOINT, BOOL);
void Draw(HDC, BOOL, BOOL);
void RectConvertMappings(LPRECT, BOOL);
//CHAPTER6MOD
/*
* These members pulled from IPolyline now serve as a central
* store for this functionality to be used from other interfaces
* like IPersistStorage and IDataObject. Other interfaces later
* may also use them.
*/
STDMETHODIMP DataSet(LPPOLYLINEDATA, BOOL, BOOL);
STDMETHODIMP DataGet(LPPOLYLINEDATA);
STDMETHODIMP DataSetMem(HGLOBAL, BOOL, BOOL, BOOL);
STDMETHODIMP RenderNative(HGLOBAL FAR *);
STDMETHODIMP RenderBitmap(HBITMAP FAR *);
STDMETHODIMP RenderMetafilePict(HGLOBAL FAR *);
//End CHAPTER6MOD
public:
CPolyline(LPUNKNOWN, LPFNDESTROYED, HINSTANCE);
~CPolyline(void);
BOOL FInit(void);
//Non-delegating object IUnknown
STDMETHODIMP QueryInterface(REFIID, LPVOID FAR *);
STDMETHODIMP_(ULONG) AddRef(void);
STDMETHODIMP_(ULONG) Release(void);
};
typedef CPolyline FAR * LPCPolyline;
//Interface implementation contained in the Polyline.
//IPOLYLIN.CPP
class __far CImpIPolyline : public IPolyline6
{
protected:
ULONG m_cRef; //Interface reference count.
LPVOID m_pObj; //Back pointer to the object.
LPUNKNOWN m_punkOuter; //Controlling unknown for delegation.
public:
CImpIPolyline(LPVOID, LPUNKNOWN);
~CImpIPolyline(void);
//IUnknown members.
STDMETHODIMP QueryInterface(REFIID, LPVOID FAR *);
STDMETHODIMP_(ULONG) AddRef(void);
STDMETHODIMP_(ULONG) Release(void);
//CHAPTER6MOD
//::Data* and ::Render* replaced with IDataObject
//End CHAPTER6MOD
//Manipulation members:
STDMETHODIMP Init(HWND, LPRECT, DWORD, UINT);
STDMETHODIMP New(void);
STDMETHODIMP Undo(void);
STDMETHODIMP Window(HWND FAR *);
STDMETHODIMP SetAdvise(LPPOLYLINEADVISESINK);
STDMETHODIMP GetAdvise(LPPOLYLINEADVISESINK FAR *);
STDMETHODIMP RectGet(LPRECT);
STDMETHODIMP SizeGet(LPRECT);
STDMETHODIMP RectSet(LPRECT, BOOL);
STDMETHODIMP SizeSet(LPRECT, BOOL);
STDMETHODIMP ColorSet(UINT, COLORREF, COLORREF FAR *);
STDMETHODIMP ColorGet(UINT, COLORREF FAR *);
STDMETHODIMP LineStyleSet(UINT, UINT FAR *);
STDMETHODIMP LineStyleGet(UINT FAR *);
};
typedef CImpIPolyline * LPCImpIPolyline;
//IPersistStorage Interface implementation contained in the Polyline.
//IPERSTOR.CPP
class __far CImpIPersistStorage : public IPersistStorage
{
protected:
ULONG m_cRef; //Interface reference count.
LPVOID m_pObj; //Back pointer to the object.
LPUNKNOWN m_punkOuter; //Controlling unknown for delegation.
public:
CImpIPersistStorage(LPVOID, LPUNKNOWN);
~CImpIPersistStorage(void);
STDMETHODIMP QueryInterface(REFIID, LPVOID FAR *);
STDMETHODIMP_(ULONG) AddRef(void);
STDMETHODIMP_(ULONG) Release(void);
STDMETHODIMP GetClassID(LPCLSID);
STDMETHODIMP IsDirty(void);
STDMETHODIMP InitNew(LPSTORAGE);
STDMETHODIMP Load(LPSTORAGE);
STDMETHODIMP Save(LPSTORAGE, BOOL);
STDMETHODIMP SaveCompleted(LPSTORAGE);
STDMETHODIMP HandsOffStorage(void);
};
//IDataObject Interface implementation contained in the Polyline.
//IDATAOBJ.CPP
class __far CImpIDataObject : public IDataObject
{
private:
ULONG m_cRef; //Interface reference count.
LPVOID m_pObj; //Back pointer to the object.
LPUNKNOWN m_punkOuter; //Controlling unknown for delegation
public:
CImpIDataObject(LPVOID, LPUNKNOWN);
~CImpIDataObject(void);
//IUnknown members that delegate to m_punkOuter.
STDMETHODIMP QueryInterface(REFIID, LPVOID FAR *);
STDMETHODIMP_(ULONG) AddRef(void);
STDMETHODIMP_(ULONG) Release(void);
//IDataObject members
STDMETHODIMP GetData(LPFORMATETC, LPSTGMEDIUM);
STDMETHODIMP GetDataHere(LPFORMATETC, LPSTGMEDIUM);
STDMETHODIMP QueryGetData(LPFORMATETC);
STDMETHODIMP GetCanonicalFormatEtc(LPFORMATETC, LPFORMATETC);
STDMETHODIMP SetData(LPFORMATETC, STGMEDIUM FAR *, BOOL);
STDMETHODIMP EnumFormatEtc(DWORD, LPENUMFORMATETC FAR *);
STDMETHODIMP DAdvise(FORMATETC FAR *, DWORD, LPA