afxpriv.h

计算机科学与技术专业毕业设计

// This is a part of the Microsoft Foundation Classes C++ library.
// Copyright (C) 1992-1998 Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Microsoft Foundation Classes Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Microsoft Foundation Classes product.

// Note: This header file contains useful classes that are documented only
//  in the MFC Technical Notes.  These classes may change from version to
//  version, so be prepared to change your code accordingly if you utilize
//  this header.  In the future, commonly used portions of this header
//  may be moved and officially documented.

#ifndef __AFXPRIV_H__
#define __AFXPRIV_H__

#ifndef __AFXADV_H__
	#include <afxadv.h>
#endif

#ifndef _INC_MALLOC
	#include <malloc.h>
#endif

#ifndef __AFXEXT_H__
	#include <afxext.h>
#endif

#ifdef _AFX_MINREBUILD
#pragma component(minrebuild, off)
#endif
#ifndef _AFX_FULLTYPEINFO
#pragma component(mintypeinfo, on)
#endif

#ifdef _AFX_PACKING
#pragma pack(push, _AFX_PACKING)
#endif

/////////////////////////////////////////////////////////////////////////////
// AFXPRIV - MFC Private Classes

// Implementation structures
struct AFX_SIZEPARENTPARAMS;    // Control bar implementation
struct AFX_CMDHANDLERINFO;      // Command routing implementation

// Classes declared in this file

	//CDC
		class CPreviewDC;               // Virtual DC for print preview

	//CCmdTarget
		//CWnd
			//CView
				class CPreviewView;     // Print preview view
		//CFrameWnd
			class COleCntrFrameWnd;
			//CMiniFrameWnd
				class CMiniDockFrameWnd;

class CDockContext;                     // for dragging control bars

/////////////////////////////////////////////////////////////////////////////

#undef AFX_DATA
#define AFX_DATA AFX_CORE_DATA

/////////////////////////////////////////////////////////////////////////////
// Global ID ranges (see Technical note TN020 for more details)

// 8000 -> FFFF command IDs (used for menu items, accelerators and controls)
#define IS_COMMAND_ID(nID)  ((nID) & 0x8000)

// 8000 -> DFFF : user commands
// E000 -> EFFF : AFX commands and other things
// F000 -> FFFF : standard windows commands and other things etc
	// E000 -> E7FF standard commands
	// E800 -> E8FF control bars (first 32 are special)
	// E900 -> EEFF standard window controls/components
	// EF00 -> EFFF SC_ menu help
	// F000 -> FFFF standard strings
#define ID_COMMAND_FROM_SC(sc)  (((sc - 0xF000) >> 4) + AFX_IDS_SCFIRST)

// 0000 -> 7FFF IDR range
// 0000 -> 6FFF : user resources
// 7000 -> 7FFF : AFX (and standard windows) resources
// IDR ranges (NOTE: IDR_ values must be <32768)
#define ASSERT_VALID_IDR(nIDR) ASSERT((nIDR) != 0 && (nIDR) < 0x8000)

/////////////////////////////////////////////////////////////////////////////
// Context sensitive help support (see Technical note TN028 for more details)

// Help ID bases
#define HID_BASE_COMMAND    0x00010000UL        // ID and IDM
#define HID_BASE_RESOURCE   0x00020000UL        // IDR and IDD
#define HID_BASE_PROMPT     0x00030000UL        // IDP
#define HID_BASE_NCAREAS    0x00040000UL
#define HID_BASE_CONTROL    0x00050000UL        // IDC
#define HID_BASE_DISPATCH   0x00060000UL        // IDispatch help codes

/////////////////////////////////////////////////////////////////////////////
// Internal AFX Windows messages (see Technical note TN024 for more details)
// (0x0360 - 0x037F are reserved for MFC)

#define WM_QUERYAFXWNDPROC  0x0360  // lResult = 1 if processed by AfxWndProc
#define WM_SIZEPARENT       0x0361  // lParam = &AFX_SIZEPARENTPARAMS
#define WM_SETMESSAGESTRING 0x0362  // wParam = nIDS (or 0),
									// lParam = lpszOther (or NULL)
#define WM_IDLEUPDATECMDUI  0x0363  // wParam == bDisableIfNoHandler
#define WM_INITIALUPDATE    0x0364  // (params unused) - sent to children
#define WM_COMMANDHELP      0x0365  // lResult = TRUE/FALSE,
									// lParam = dwContext
#define WM_HELPHITTEST      0x0366  // lResult = dwContext,
									// lParam = MAKELONG(x,y)
#define WM_EXITHELPMODE     0x0367  // (params unused)
#define WM_RECALCPARENT     0x0368  // force RecalcLayout on frame window
									//  (only for inplace frame windows)
#define WM_SIZECHILD        0x0369  // special notify from COleResizeBar
									// wParam = ID of child window
									// lParam = lpRectNew (new position/size)
#define WM_KICKIDLE         0x036A  // (params unused) causes idles to kick in
#define WM_QUERYCENTERWND   0x036B  // lParam = HWND to use as centering parent
#define WM_DISABLEMODAL     0x036C  // lResult = 0, disable during modal state
									// lResult = 1, don't disable
#define WM_FLOATSTATUS      0x036D  // wParam combination of FS_* flags below

// WM_ACTIVATETOPLEVEL is like WM_ACTIVATEAPP but works with hierarchies
//   of mixed processes (as is the case with OLE in-place activation)
#define WM_ACTIVATETOPLEVEL 0x036E  // wParam = nState (like WM_ACTIVATE)
									// lParam = pointer to HWND[2]
									//  lParam[0] = hWnd getting WM_ACTIVATE
									//  lParam[1] = hWndOther

#define WM_QUERY3DCONTROLS  0x036F  // lResult != 0 if 3D controls wanted

// Note: Messages 0x0370, 0x0371, and 0x372 were incorrectly used by
//  some versions of Windows.  To remain compatible, MFC does not
//  use messages in that range.
#define WM_RESERVED_0370    0x0370
#define WM_RESERVED_0371    0x0371
#define WM_RESERVED_0372    0x0372

// WM_SOCKET_NOTIFY and WM_SOCKET_DEAD are used internally by MFC's
// Windows sockets implementation.  For more information, see sockcore.cpp
#define WM_SOCKET_NOTIFY    0x0373
#define WM_SOCKET_DEAD      0x0374

// same as WM_SETMESSAGESTRING except not popped if IsTracking()
#define WM_POPMESSAGESTRING 0x0375

// WM_HELPPROMPTADDR is used internally to get the address of
//  m_dwPromptContext from the associated frame window. This is used
//  during message boxes to setup for F1 help while that msg box is
//  displayed. lResult is the address of m_dwPromptContext.
#define WM_HELPPROMPTADDR   0x0376

// Constants used in DLGINIT resources for OLE control containers
// NOTE: These are NOT real Windows messages they are simply tags
// used in the control resource and are never used as 'messages'
#define WM_OCC_LOADFROMSTREAM           0x0376
#define WM_OCC_LOADFROMSTORAGE          0x0377
#define WM_OCC_INITNEW                  0x0378
#define WM_OCC_LOADFROMSTREAM_EX        0x037A
#define WM_OCC_LOADFROMSTORAGE_EX       0x037B

// Marker used while rearranging the message queue
#define WM_QUEUE_SENTINEL   0x0379

// Note: Messages 0x037C - 0x37E reserved for future MFC use.
#define WM_RESERVED_037C    0x037C
#define WM_RESERVED_037D    0x037D
#define WM_RESERVED_037E    0x037E

// WM_FORWARDMSG - used by ATL to forward a message to another window for processing
//  WPARAM - DWORD dwUserData - defined by user
//  LPARAM - LPMSG pMsg - a pointer to the MSG structure
//  return value - 0 if the message was not processed, nonzero if it was
#define WM_FORWARDMSG       0x037F

// like ON_MESSAGE but no return value
#define ON_MESSAGE_VOID(message, memberFxn) \
	{ message, 0, 0, 0, AfxSig_vv, \
		(AFX_PMSG)(AFX_PMSGW)(void (AFX_MSG_CALL CWnd::*)(void))&memberFxn },

// special struct for WM_SIZEPARENT
struct AFX_SIZEPARENTPARAMS
{
	HDWP hDWP;       // handle for DeferWindowPos
	RECT rect;       // parent client rectangle (trim as appropriate)
	SIZE sizeTotal;  // total size on each side as layout proceeds
	BOOL bStretch;   // should stretch to fill all space
};

// flags for wParam in the WM_FLOATSTATUS message
enum {  FS_SHOW = 0x01, FS_HIDE = 0x02,
		FS_ACTIVATE = 0x04, FS_DEACTIVATE = 0x08,
		FS_ENABLE = 0x10, FS_DISABLE = 0x20,
		FS_SYNCACTIVE = 0x40 };

void AFXAPI AfxRepositionWindow(AFX_SIZEPARENTPARAMS* lpLayout,
	HWND hWnd, LPCRECT lpRect);

/////////////////////////////////////////////////////////////////////////////
// Implementation of command routing

struct AFX_CMDHANDLERINFO
{
	CCmdTarget* pTarget;
	void (AFX_MSG_CALL CCmdTarget::*pmf)(void);
};

/////////////////////////////////////////////////////////////////////////////
// Robust file save support
// opens a temp file if modeCreate specified and enough free space
// renaming, etc occurs automatically if everything succeeds

class CMirrorFile : public CFile
{
// Implementation
public:
	virtual void Abort();
	virtual void Close();
	virtual BOOL Open(LPCTSTR lpszFileName, UINT nOpenFlags,
		CFileException* pError = NULL);
	static CString GetTempName(LPCTSTR pstrOriginalFile, BOOL bCreate);

protected:
	CString m_strMirrorName;
};

/////////////////////////////////////////////////////////////////////////////
// Implementation of PrintPreview

class CPreviewDC : public CDC
{
	DECLARE_DYNAMIC(CPreviewDC)

public:
	virtual void SetAttribDC(HDC hDC);  // Set the Attribute DC
	virtual void SetOutputDC(HDC hDC);

	virtual void ReleaseOutputDC();

// Constructors
	CPreviewDC();

// Implementation
public:
	virtual ~CPreviewDC();
#ifdef _DEBUG
	virtual void AssertValid() const;
	virtual void Dump(CDumpContext& dc) const;
#endif

	void SetScaleRatio(int nNumerator, int nDenominator);
	void SetTopLeftOffset(CSize TopLeft);
	void ClipToPage();

	// These conversion functions can be used without an output DC

	void PrinterDPtoScreenDP(LPPOINT lpPoint) const;

// Device-Context Functions
	virtual int SaveDC();
	virtual BOOL RestoreDC(int nSavedDC);

public:
	virtual CGdiObject* SelectStockObject(int nIndex);
	virtual CFont* SelectObject(CFont* pFont);

// Drawing-Attribute Functions
	virtual COLORREF SetBkColor(COLORREF crColor);
	virtual COLORREF SetTextColor(COLORREF crColor);

// Mapping Functions
	virtual int SetMapMode(int nMapMode);
	virtual CPoint SetViewportOrg(int x, int y);
	virtual CPoint OffsetViewportOrg(int nWidth, int nHeight);
	virtual CSize SetViewportExt(int x, int y);
	virtual CSize ScaleViewportExt(int xNum, int xDenom, int yNum, int yDenom);
	virtual CSize SetWindowExt(int x, int y);
	virtual CSize ScaleWindowExt(int xNum, int xDenom, int yNum, int yDenom);

// Text Functions
	virtual BOOL TextOut(int x, int y, LPCTSTR lpszString, int nCount);
	virtual BOOL ExtTextOut(int x, int y, UINT nOptions, LPCRECT lpRect,
				LPCTSTR lpszString, UINT nCount, LPINT lpDxWidths);
	virtual CSize TabbedTextOut(int x, int y, LPCTSTR lpszString, int nCount,
				int nTabPositions, LPINT lpnTabStopPositions, int nTabOrigin);
	virtual int DrawText(LPCTSTR lpszString, int nCount, LPRECT lpRect,
				UINT nFormat);
	virtual BOOL GrayString(CBrush* pBrush,
				BOOL (CALLBACK* lpfnOutput)(HDC, LPARAM, int),
					LPARAM lpData, int nCount,
					int x, int y, int nWidth, int nHeight);

// Printer Escape Functions
	virtual int Escape(int nEscape, int nCount, LPCSTR lpszInData, LPVOID lpOutData);

// Implementation
protected:
	void MirrorMappingMode(BOOL bCompute);
	void MirrorViewportOrg();
	void MirrorFont();
	void MirrorAttributes();

	CSize ComputeDeltas(int& x, LPCTSTR lpszString, UINT& nCount, BOOL bTabbed,
					UINT nTabStops, LPINT lpnTabStops, int nTabOrigin,
					LPTSTR lpszOutputString, int* pnDxWidths, int& nRightFixup);

protected:
	int m_nScaleNum;    // Scale ratio Numerator
	int m_nScaleDen;    // Scale ratio Denominator
	int m_nSaveDCIndex; // DC Save index when Screen DC Attached
	int m_nSaveDCDelta; // delta between Attrib and output restore indices
	CSize m_sizeTopLeft;// Offset for top left corner of page
	HFONT m_hFont;      // Font selected into the screen DC (NULL if none)
	HFONT m_hPrinterFont; // Font selected into the print DC

	CSize m_sizeWinExt; // cached window extents computed for screen
	CSize m_sizeVpExt;  // cached viewport extents computed for screen
};

/////////////////////////////////////////////////////////////////////////////
// CPreviewView

class CDialogBar;

class CPreviewView : public CScrollView
{
	DECLARE_DYNCREATE(CPreviewView)

// Constructors
public:
	CPreviewView();
	BOOL SetPrintView(CView* pPrintView);

// Attributes
protected:
	CView* m_pOrigView;
	CView* m_pPrintView;
	CPreviewDC* m_pPreviewDC;  // Output and attrib DCs Set, not created
	CDC m_dcPrint;             // Actual printer DC

// Operations
	void SetZoomState(UINT nNewState, UINT nPage, CPoint point);
	void SetCurrentPage(UINT nPage, BOOL bClearRatios);

	// Returns TRUE if in a page rect. Returns the page index
	// in nPage and the point converted to 1:1 screen device coordinates
	BOOL FindPageRect(CPoint& point, UINT& nPage);


// Overridables
	virtual void OnActivateView(BOOL bActivate,
			CView* pActivateView, CView* pDeactiveView);

	// Returns .cx/.cy as the numerator/denominator pair for the ratio
	// using CSize for convenience
	virtual CSize CalcScaleRatio(CSize windowSize, CSize actualSize);

	virtual void PositionPage(UINT nPage);
	virtual void OnDisplayPageNumber(UINT nPage, UINT nPagesDisplayed);

// Implementation
public:
	virtual ~CPreviewView();
	virtual void OnPrepareDC(CDC* pDC, CPrintInfo* pInfo = NULL);
#ifdef _DEBUG
	void AssertValid() const;
	void Dump(CDumpContext& dc) const;
#endif

protected:
	//{{AFX_MSG(CPreviewView)
	afx_msg void OnPreviewClose();
	afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
	afx_msg void OnSize(UINT nType, int cx, int cy);
	afx_msg void OnDraw(CDC* pDC);
	afx_msg void OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
	afx_msg void OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
	afx_msg BOOL OnEraseBkgnd(CDC* pDC);
	afx_msg void OnNumPageChange();
	afx_msg void OnNextPage();
	afx_msg void OnPrevPage();
	afx_msg void OnPreviewPrint();
	afx_msg void OnZoomIn();