Visual C++打印机编程入门

#include "stdafx.h" #include "Print01.h" #include "Print01Dlg.h" #ifdef _DEBUG #define new DEBUG_NEW #endif CPrint01Dlg::CPrint01Dlg(CWnd* pParent /*=NULL*/) : CDialog(CPrint01Dlg::IDD, pParent) { m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CPrint01Dlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); } BEGIN_MESSAGE_MAP(CPrint01Dlg, CDialog) ON_WM_PAINT() ON_WM_QUERYDRAGICON() //}}AFX_MSG_MAP ON_BN_CLICKED(IDC_BTN_PRINT, &CPrint01Dlg::OnBnClickedBtnPrint) END_MESSAGE_MAP() // CPrint01Dlg 消息处理程序 BOOL CPrint01Dlg::OnInitDialog() { CDialog::OnInitDialog(); // 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动 // 执行此操作 SetIcon(m_hIcon, TRUE); // 设置大图标 SetIcon(m_hIcon, FALSE); // 设置小图标 // TODO: 在此添加额外的初始化代码 return TRUE; // 除非将焦点设置到控件，否则返回 TRUE } // 如果向对话框添加最小化按钮，则需要下面的代码 // 来绘制该图标。对于使用文档/视图模型的 MFC 应用程序， // 这将由框架自动完成。 void CPrint01Dlg::OnPaint() { if (IsIconic()) { CPaintDC dc(this); // 用于绘制的设备上下文 SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0); // 使图标在工作区矩形中居中 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; // 绘制图标 dc.DrawIcon(x, y, m_hIcon); } else { CDialog::OnPaint(); } } //当用户拖动最小化窗口时系统调用此函数取得光标 //显示。 HCURSOR CPrint01Dlg::OnQueryDragIcon() { return static_cast<HCURSOR>(m_hIcon); } void CPrint01Dlg::Print() { // Display the Windows Print dialog box with "All" radio button // initially selected. All other radio buttons are disabled. CPrintDialog printDlg(FALSE); if (IDCANCEL == printDlg.DoModal()) return; // 利用CPrintDialog生成打印机设备环境 CDC dc; dc.Attach(printDlg.GetPrinterDC()); dc.m_bPrinting = TRUE; DOCINFO di; ::ZeroMemory(&di, sizeof(DOCINFO)); di.cbSize = sizeof(DOCINFO); di.lpszDocName = _T("sample"); // Start a print job. bool bPrintingOK = dc.StartDoc(&di); CPrintInfo info; // Set the number of the last page of the document. info.SetMaxPage(1); // Specifies the usable drawing area of the page in logical coordinates. info.m_rectDraw.SetRect(0, 0, dc.GetDeviceCaps(HORZRES), dc.GetDeviceCaps(VERTRES)); OnPrint(&dc, &info); if (bPrintingOK) dc.EndDoc(); // End a print job else dc.AbortDoc(); // Abort job. dc.Detach(); // Detach the printer DC } void CPrint01Dlg::OnPrint(CDC *pdc, CPrintInfo *pInfo) { // Load a bitmap. HANDLE file = ::LoadImage(NULL, _T("D:\\sample.bmp"), IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE); if (NULL == file) return; CBitmap bmp; // Attach a bitmap handle to a CBitmap object. if (!bmp.Attach(file)) return; BITMAP bmpInfo; bmp.GetBitmap(&bmpInfo); CDC memDC; memDC.CreateCompatibleDC(pdc); HBITMAP hOldBmp = (HBITMAP)memDC.SelectObject(&bmp); CRect destRect = pInfo->m_rectDraw; pdc->StretchBlt(destRect.left, destRect.top, destRect.Width(), destRect.Height(), &memDC, 0, 0, bmpInfo.bmWidth, bmpInfo.bmHeight, SRCCOPY); memDC.SelectObject(hOldBmp); memDC.DeleteDC(); bmp.Detach(); } void CPrint01Dlg::OnBnClickedBtnPrint() { Print(); }