POLYLINE.H

/* 
 * POLYLINE.H 
 * Cosmo Chapter 21 
 * 
 * Definitions and function prototypes for the PolyLine window 
 * class that can be treated like its own control. 
 * 
 * Copyright (c)1993-1995 Microsoft Corporation, All Rights Reserved 
 * 
 * Kraig Brockschmidt, Microsoft 
 * Internet  :  kraigb@microsoft.com 
 * Compuserve:  >INTERNET:kraigb@microsoft.com 
 */ 
 
 
#ifndef _POLYLINE_H_ 
#define _POLYLINE_H_ 
 
//Versioning. 
#define VERSIONMAJOR                2 
#define VERSIONMINOR                0 
#define VERSIONCURRENT              0x00020000 
 
//Classname 
#define SZCLASSPOLYLINE             TEXT("polyline") 
 
//Stream Name that holds the data 
#define SZSTREAM                    OLETEXT("CONTENTS") 
#define SZOLE1STREAM                OLETEXT("\1Ole10Native") 
 
#define HIMETRIC_PER_INCH           2540 
#define CPOLYLINEPOINTS             20 
 
//Window extra bytes and offsets 
#define CBPOLYLINEWNDEXTRA          (sizeof(LONG)) 
#define PLWL_STRUCTURE              0 
 
 
//Version 2.0 Polyline Structure 
typedef struct tagPOLYLINEDATA 
    { 
    WORD        wVerMaj;                //Major version number. 
    WORD        wVerMin;                //Minor version number. 
    WORD        cPoints;                //Number of points. 
    short       fReserved;              //Obsolete from v1.0 
    RECTS       rc;                     //Rectangle of this figure 
    POINTS      rgpt[CPOLYLINEPOINTS];  //Points (0-32767 grid) 
 
    //Version 2.0 additions 
    COLORREF    rgbBackground;          //Background color 
    COLORREF    rgbLine;                //Line color 
    short       iLineStyle;             //Line style 
    } POLYLINEDATA, *PPOLYLINEDATA; 
 
#define CBPOLYLINEDATA   sizeof(POLYLINEDATA) 
#define CBPOLYLINEDATA20 sizeof(POLYLINEDATA) 
 
 
//Version 1.0 Polyline Structure 
typedef struct tagPOLYLINEDATA10 
    { 
    WORD        wVerMaj;                //Major version number. 
    WORD        wVerMin;                //Minor version number. 
    WORD        cPoints;                //Number of points. 
    short       fDrawEntire;            //Flag to draw entire figure 
    RECTS       rc;                     //Rectangle of this figure 
    POINTS      rgpt[CPOLYLINEPOINTS];  //Points (scaled to rc) 
    } POLYLINEDATA10, *PPOLYLINEDATA10; 
 
#define CBPOLYLINEDATA10 sizeof(POLYLINEDATA10) 
 
 
//POLYWIN.CPP 
LRESULT APIENTRY PolylineWndProc(HWND, UINT, WPARAM, LPARAM); 
 
 
class CPolyline : public CWindow 
    { 
    friend LRESULT APIENTRY PolylineWndProc(HWND, UINT, WPARAM 
        , LPARAM); 
 
    private: 
        POLYLINEDATA   m_pl; 
 
        class CPolylineAdviseSink * m_pAdv; 
 
    public: 
        //This is for CFigure to look at when writing its storage. 
        BOOL            m_fReadFromOLE10; 
 
    private: 
        HFILE     OpenFileW(LPTSTR, LPOFSTRUCT, UINT); 
        void      PointScale(LPRECT, LPPOINTS, BOOL); 
        void      Draw(HDC, BOOL, BOOL); 
        void      RectConvertMappings(LPRECT, BOOL); 
 
    public: 
        CPolyline(HINSTANCE); 
        ~CPolyline(void); 
 
        BOOL      Init(HWND, LPRECT, DWORD, UINT 
            , class CPolylineAdviseSink *); 
 
        void      New(void); 
        BOOL      Undo(void); 
 
        //File functions 
        LONG      ReadFromStorage(LPSTORAGE); 
        LONG      WriteToStorage(LPSTORAGE, LONG); 
 
        LONG      ReadFromStream(LPSTREAM); 
        LONG      WriteToStream(LPSTREAM, LONG); 
 
        LONG      ReadFromFile(LPTSTR); 
        LONG      WriteToFile(LPTSTR, LONG); 
 
        //Data transfer functions 
        LONG      DataSet(PPOLYLINEDATA, BOOL, BOOL); 
        LONG      DataGet(PPOLYLINEDATA, LONG); 
        LONG      DataSetMem(HGLOBAL, BOOL, BOOL, BOOL); 
        LONG      DataGetMem(LONG, HGLOBAL *); 
        HBITMAP   RenderBitmap(void); 
        HMETAFILE RenderMetafile(void); 
        HGLOBAL   RenderMetafilePict(void); 
 
        void      RectGet(LPRECT); 
        void      SizeGet(LPRECT); 
        void      RectSet(LPRECT, BOOL); 
        void      SizeSet(LPRECT, BOOL); 
        COLORREF  ColorSet(UINT, COLORREF); 
        COLORREF  ColorGet(UINT); 
        UINT      LineStyleSet(UINT); 
        UINT      LineStyleGet(void); 
    }; 
 
typedef CPolyline *PCPolyline; 
 
 
//Error values for data transfer functions 
#define POLYLINE_E_NONE                    0 
#define POLYLINE_E_UNSUPPORTEDVERSION      -1 
#define POLYLINE_E_INVALIDPOINTER          -2 
#define POLYLINE_E_READFAILURE             -3 
#define POLYLINE_E_WRITEFAILURE            -4 
 
 
 
 
class CPolylineAdviseSink 
    { 
    private: 
        LPVOID      m_pv;           //Customizable structure 
 
    public: 
        CPolylineAdviseSink(LPVOID); 
        ~CPolylineAdviseSink(void); 
 
        void OnPointChange(void); 
        void OnSizeChange(void); 
        void OnDataChange(void); 
        void OnColorChange(void); 
        void OnLineStyleChange(void); 
    }; 
 
typedef CPolylineAdviseSink *PCPolylineAdviseSink; 
 
 
//Color indices for color messages 
#define POLYLINECOLOR_BACKGROUND    0 
#define POLYLINECOLOR_LINE          1 
 
 
 
#endif  //_POLYLINE_H_