barcodedlg.cpp

Visual C++ 的学习资料一

// BarcodeDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Barcode.h"
#include "BarcodeDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CBarcodeDlg dialog

CBarcodeDlg::CBarcodeDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CBarcodeDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CBarcodeDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CBarcodeDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CBarcodeDlg)
	DDX_Control(pDX, IDC_BARCODECTRL1, m_barcode);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CBarcodeDlg, CDialog)
	//{{AFX_MSG_MAP(CBarcodeDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_CTLCOLOR()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CBarcodeDlg message handlers

BOOL CBarcodeDlg::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, strAboutMenu);
		}
	}

	// 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
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CBarcodeDlg::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 CBarcodeDlg::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 CBarcodeDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}
	
void CBarcodeDlg::OnOK() 
{
	//构造打印对话框
	CPrintDialog m_print(false,PD_ALLPAGES | PD_USEDEVMODECOPIES |PD_RETURNDEFAULT| PD_NOPAGENUMS | PD_HIDEPRINTTOFILE | PD_NOSELECTION,this);

	m_barcode.SetBackColor(RGB(255,255,255));
	if (m_print.DoModal()==IDOK)
	{
		CDC dc1 ;
		dc1.Attach(m_print.GetPrinterDC()); //将dc1关联到打印机句柄

		CDC dc;
		dc.Attach(m_barcode.GetDC()->m_hDC); //将dc关联到条形码句柄
		CRect rect;
		m_barcode.GetClientRect(rect); //获取条形码的客户区域

		rect.DeflateRect(1,1,1,1);
		int screenx,screeny;
		int printx,printy;
		double ratex,ratey;

		//确定打印机与屏幕的像素比率
		screenx =  dc.GetDeviceCaps(LOGPIXELSX);
		screeny =  dc.GetDeviceCaps(LOGPIXELSY);

		printx =  dc1.GetDeviceCaps(LOGPIXELSX);
		printy =  dc1.GetDeviceCaps(LOGPIXELSY);

		ratex = (double)(printx)/screenx;
		ratey = (double)(printy)/screeny;

		dc1.SetBkMode(TRANSPARENT);
		//开始打印
		dc1.StartDoc("FirstDoc");
		dc1.StretchBlt(1,1,(int)(rect.Width()*ratex),(int)(rect.Height()*ratey),&dc,1,1,rect.Width(),rect.Height(),SRCCOPY);
		dc1.EndDoc();
	}
}

HBRUSH CBarcodeDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) 
{
	HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
	
	
	// TODO: Return a different brush if the default is not desired
	return hbr;
}

void CBarcodeDlg::OnButton1() 
{
	VARIANT newvalue;
	CString str = "1234567891234";
	newvalue.vt = VT_BSTR;
	newvalue.bstrVal = str.AllocSysString();
	m_barcode.SetValue(newvalue);
}