www.gusucode.com > VC++ 对话框中使用打印预览的功能演示-源码程序 > VC++ 对话框中使用打印预览的功能演示-源码程序/code/DlgPreprintDlg.cpp

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// DlgPreprintDlg.cpp : implementation file
//

#include "stdafx.h"
#include "DlgPreprint.h"
#include "DlgPreprintDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

void Drawf(CDC* pDC,CPrintInfo* pInfo,void* pVoid=NULL);

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDlgPreprintDlg dialog

CDlgPreprintDlg::CDlgPreprintDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CDlgPreprintDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDlgPreprintDlg)
	m_FontSize = 12;
	m_FontName = -1;
	m_Str = _T("    本程序主要演示如何在对话框中使用只有在文档-视图模型中才能使用的打印预览功能，其实本程序也使用了一个没有文档类的文档-视图结构来间接完成打印预工作的，但我们在使用时基本感觉不到它的存在。\r\n    在实际使用中可将文档-视图部分编制成扩展动态链接库，我就是这样做的，编制打印程序时使用起来非常方便。");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CDlgPreprintDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDlgPreprintDlg)
	DDX_Control(pDX, IDC_COMBO1, m_FontList);
	DDX_Text(pDX, IDC_EDIT_FONTSIZE, m_FontSize);
	DDX_CBIndex(pDX, IDC_COMBO1, m_FontName);
	DDX_Text(pDX, IDC_EDIT1, m_Str);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CDlgPreprintDlg, CDialog)
	//{{AFX_MSG_MAP(CDlgPreprintDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)	
	ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDlgPreprintDlg message handlers

BOOL CDlgPreprintDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, _T("关于本程序"));
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	EnumerateFonts();
	m_FontList.SelectString(0,_T("宋体"));
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

BOOL CALLBACK AFX_EXPORT CDlgPreprintDlg::EnumFamScreenCallBackEx(ENUMLOGFONTEX* pelf, 
	NEWTEXTMETRICEX* /*lpntm*/, int FontType, LPVOID pThis)

{
	// don't put in non-printer raster fonts
	if (FontType & RASTER_FONTTYPE)
		return 1;
		
	CString ss;
	if(FontType & TRUETYPE_FONTTYPE)
		ss=_T(pelf->elfLogFont.lfFaceName);
	int kk=((CDlgPreprintDlg*)pThis)->m_FontList.AddString(ss);
	//if(ss==_T(logFont) ((CTextProperties*)pThis)->m_FontName.SetCurSel(kk);
	return 1; // Call me back
}

BOOL CDlgPreprintDlg::EnumerateFonts()
{
	HDC hDC;
	
	// Get screen fonts
	hDC = ::GetWindowDC(NULL);
	
	LOGFONT lf;
	
	ZeroMemory(&lf,sizeof(lf));
	lf.lfCharSet = GB2312_CHARSET;

	if (!EnumFontFamiliesEx(
			hDC,	// handle to device context
			&lf,	// pointer to logical font information
			(FONTENUMPROC)EnumFamScreenCallBackEx,	// pointer to callback function
			(LPARAM) this,	// application-supplied data
			(DWORD) 0))
		return FALSE;

	::ReleaseDC(NULL,hDC);		
	return TRUE; // All's ok
}


void CDlgPreprintDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CDlgPreprintDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CDlgPreprintDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CDlgPreprintDlg::OnButton1() 
{
	// TODO: Add your control notification handler code here	
	//初始化文档-视图结构时需传递五个参数
		//DRAWFUN pDraw		显示内容函数指针
		//CWnd*pOldWnd		主对话框窗口指针
		//CWnd*pCallWnd		调用窗口指针,在一个对话杠程序中，pOldWnd和pCallWnd是一样的
							//若不是在主对话框中调用，则pOldWnd为主对话框指针，而pCallWnd为调用窗口指针
		//BOOL bDirect		是否直接打印
		//LPCTSTR stTitle	预览窗口标题			
	m_PreFrame = new CMainFrame(Drawf,this,this,FALSE);	
	m_PreFrame->ShowWindow(SW_SHOW);
	m_PreFrame->UpdateWindow();	
}

void CDlgPreprintDlg::OnButton2() 
{	
	m_PreFrame = new CMainFrame(Drawf,this,this,TRUE);		
	
}

void CDlgPreprintDlg::OnPrint(CDC* pDC,CPrintInfo* pInfo)
{
	//UpdateData(TRUE);
	CFont font,*oldfont;
	CPoint point;
	CString ss=_T("在对话框中使用打印预览");
	int nWidth=pDC->GetDeviceCaps(HORZRES);
	int nHeight=pDC->GetDeviceCaps(VERTRES);
	int ghdf=pDC->GetDeviceCaps(LOGPIXELSY);
	CRect DrawRect(0,0,nWidth,nHeight),rect,tempRect;
	DrawRect.InflateRect(-100,-50,-100,-20);
	pDC->Rectangle(&DrawRect);
	font.CreateFont(-MulDiv(32,-pDC->GetDeviceCaps(LOGPIXELSY),72),
					0,0,0,FW_NORMAL,0,0,0,GB2312_CHARSET,
					OUT_STROKE_PRECIS,CLIP_STROKE_PRECIS,DRAFT_QUALITY,
					VARIABLE_PITCH|FF_SWISS,_T("黑体"));
	oldfont=pDC->SelectObject(&font);
	tempRect=DrawRect;
	tempRect.InflateRect(0,-5,0,0);
	pDC->DrawText(ss,&tempRect,DT_CALCRECT|DT_SINGLELINE);	
	rect=tempRect;rect.InflateRect(10,0);
	point=CPoint(DrawRect.left+(DrawRect.Width()-rect.Width())/2,rect.bottom+2);
	pDC->MoveTo(point);
	pDC->LineTo(point.x+rect.Width(),point.y);
	point.Offset(0,2);
	pDC->MoveTo(point);
	pDC->LineTo(point.x+rect.Width(),point.y);
	tempRect.right=DrawRect.right;
	pDC->DrawText(ss,&tempRect,DT_CENTER|DT_TOP|DT_SINGLELINE);	
	pDC->SelectObject(oldfont);
	font.DeleteObject();
	font.CreateFont(-MulDiv(12,-pDC->GetDeviceCaps(LOGPIXELSY),72),
					0,0,0,FW_NORMAL,0,0,0,GB2312_CHARSET,
					OUT_STROKE_PRECIS,CLIP_STROKE_PRECIS,DRAFT_QUALITY,
					VARIABLE_PITCH|FF_SWISS,_T("宋体"));
	pDC->SelectObject(&font);
	ss=_T("HRX   hrxzh@163.net");
	rect=DrawRect;
	rect.top=point.y+5;
	pDC->DrawText(ss,&rect,DT_CALCRECT|DT_SINGLELINE);	
	rect.right=DrawRect.right;
	pDC->DrawText(ss,&rect,DT_CENTER|DT_TOP|DT_SINGLELINE);	
	pDC->SelectObject(oldfont);
	font.DeleteObject();
	//以下打印定制内容

	UpdateData(TRUE);
	if(m_Str.IsEmpty()) return; 		
	CString stFontName;
	if(m_FontName>-1)
		m_FontList.GetLBText(m_FontName, stFontName);
	else
		stFontName=_T("宋体");
	if(stFontName.IsEmpty()) stFontName=_T("宋体");
	if(m_FontSize==0)	m_FontSize=9;
	font.CreateFont(-MulDiv(m_FontSize,-pDC->GetDeviceCaps(LOGPIXELSY),72),
					0,0,0,FW_NORMAL,0,0,0,GB2312_CHARSET,
					OUT_STROKE_PRECIS,CLIP_STROKE_PRECIS,DRAFT_QUALITY,
					VARIABLE_PITCH|FF_SWISS,stFontName);
	tempRect.top=rect.bottom+10;
	tempRect.left=DrawRect.left+30;
	tempRect.right=DrawRect.right-30;
	tempRect.bottom=DrawRect.bottom-50;
	pDC->SelectObject(&font);
	pDC->DrawText(m_Str,&tempRect,DT_TOP|DT_WORDBREAK);	
	pDC->SelectObject(oldfont);
	font.DeleteObject();
	
}


void Drawf(CDC* pDC,CPrintInfo* pInfo,void* pVoid)
{	
	((CDlgPreprintDlg*)pVoid)->OnPrint(pDC,pInfo);	
}