打印与预览 ocx显示的内容

// PrintControlView.cpp : implementation of the CPrintControlView class // #include "stdafx.h" #include "PrintControl.h" #include "PrintControlDoc.h" #include "PrintControlView.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CPrintControlView IMPLEMENT_DYNCREATE(CPrintControlView, CFormView) BEGIN_MESSAGE_MAP(CPrintControlView, CFormView) //{{AFX_MSG_MAP(CPrintControlView) // NOTE - the ClassWizard will add and remove mapping macros here. // DO NOT EDIT what you see in these blocks of generated code! //}}AFX_MSG_MAP // Standard printing commands ON_COMMAND(ID_FILE_PRINT, CFormView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_DIRECT, CFormView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_PREVIEW, CFormView::OnFilePrintPreview) END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CPrintControlView construction/destruction CPrintControlView::CPrintControlView() : CFormView(CPrintControlView::IDD) { //{{AFX_DATA_INIT(CPrintControlView) m_nControlChoice = 0; m_nPrintChoice = 0; //}}AFX_DATA_INIT // TODO: add construction code here } CPrintControlView::~CPrintControlView() { } void CPrintControlView::DoDataExchange(CDataExchange* pDX) { CFormView::DoDataExchange(pDX); //{{AFX_DATA_MAP(CPrintControlView) DDX_Control(pDX, IDC_PICTURE, m_ctlPicture); DDX_Radio(pDX, IDC_CONTROL1, m_nControlChoice); DDX_Control(pDX, IDC_CALENDAR1, m_ctlCalendar); DDX_Control(pDX, IDC_MSCHART1, m_ctlChart); DDX_Radio(pDX, IDC_RADIO_PRINT1, m_nPrintChoice); //}}AFX_DATA_MAP } BOOL CPrintControlView::PreCreateWindow(CREATESTRUCT& cs) { // TODO: Modify the Window class or styles here by modifying // the CREATESTRUCT cs return CFormView::PreCreateWindow(cs); } void CPrintControlView::OnInitialUpdate() { CFormView::OnInitialUpdate(); GetParentFrame()->RecalcLayout(); ResizeParentToFit(); } ///////////////////////////////////////////////////////////////////////////// // CPrintControlView diagnostics #ifdef _DEBUG void CPrintControlView::AssertValid() const { CFormView::AssertValid(); } void CPrintControlView::Dump(CDumpContext& dc) const { CFormView::Dump(dc); } CPrintControlDoc* CPrintControlView::GetDocument() // non-debug version is inline { ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CPrintControlDoc))); return (CPrintControlDoc*)m_pDocument; } #endif //_DEBUG ///////////////////////////////////////////////////////////////////////////// // CPrintControlView printing BOOL CPrintControlView::OnPreparePrinting(CPrintInfo* pInfo) { // limit pages for testing pInfo->SetMinPage(1); pInfo->SetMaxPage(1); // default preparation return DoPreparePrinting(pInfo); } void CPrintControlView::OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo) { } void CPrintControlView::OnEndPrinting(CDC* pDC, CPrintInfo* pInfo) { } ///////////////////////////////////////////////////////////////////////////// // Demonstration code // ********************************************************* // ErrorMessage // // Looks up and displays an error message. // // Arguments: // // hr - (HRESULT, input) the error code // strError - (CString, input) the error string (may be blank) // // Returns: // // Nothing // void ErrorMessage(HRESULT hr, CString strError) { CString strTemp; // use the string if given if (!strError.IsEmpty()) { strTemp.Format(_T("Error - 0x%08X, %s"), hr, strError); AfxMessageBox(strTemp); } else { // attempt to get the message from the system LPVOID lpMsgBuf = NULL; if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, hr, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &lpMsgBuf, 0, NULL )) { strTemp.Format(_T("Error - 0x%08X, %s"), hr, lpMsgBuf); AfxMessageBox(strTemp); LocalFree(lpMsgBuf); } // unknown error code else { strTemp.Format(_T("Unknown Error - 0x%08X"), hr); AfxMessageBox(strTemp); } } } // ********************************************************* // PrintTitle // // Prints a title string on the top of the page so we can // identify the print mechanism. // // Arguments: // // pDC - (CDC *) the printer device context // pInfo - (CPrintInfo *) the print info structure pointer // strTitle - (CString, input) the title string // // Returns: // // Nothing // void CPrintControlView::PrintTitle(CDC* pDC, CPrintInfo* pInfo, CString strTitle) { // create the font for the title (note assumes MM_TEXT mode) CFont fntPrintFont; int nHeight = -MulDiv(10, pDC->GetDeviceCaps(LOGPIXELSY), 72); // 10 point font fntPrintFont.CreateFont(nHeight, 0, 0, 0, FW_DONTCARE, FALSE, FALSE, 0, DEFAULT_CHARSET, OUT_TT_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH | FF_DONTCARE, _T("MS Shell Dlg")); // switch to our font CFont *pOldFont = pDC->SelectObject(&fntPrintFont); // get a reference to the drawing rectangle CRect &rcPage = pInfo->m_rectDraw; // draw the title int nCurrentY = rcPage.top + 100; CSize sizeHeader = pDC->GetTextExtent(strTitle); pDC->TextOut(100, nCurrentY, strTitle); // move down a little nCurrentY += sizeHeader.cy * 2; // adjust the remaining printable area rcPage.top = nCurrentY; // clean up pDC->SelectObject(pOldFont); fntPrintFont.DeleteObject(); } // ********************************************************* // OnPrint // // Standard MFC print framework routine. Called for print or // print preview. // // Arguments: // // See the MFC documentation for OnPrint. // // Returns: // // Nothing // void CPrintControlView::OnPrint(CDC* pDC, CPrintInfo* pInfo) { // Note: in all cases we assume the printer can handle graphics, etc. // transfer choices to member variables UpdateData(TRUE); // get the selected control CWnd *pWnd = NULL; if (m_nControlChoice == 0) pWnd = &m_ctlChart; else if (m_nControlChoice == 1) pWnd = &m_ctlCalendar; else pWnd = &m_ctlPicture; // print using the selected radio option switch (m_nPrintChoice) { case 0: // draw using a screen device context, then transfer to printer dc ourselves PrintTitle(pDC, pInfo, _T("IViewObject::Draw (Screen DC)")); PrintControlUsingScreen(pWnd, pDC, pInfo); break; case 1: // draw using the printer device context directly PrintTitle(pDC, pInfo, _T("IViewObject::Draw (Printer DC)")); PrintControlUsingPrinter(pWnd, pDC, pInfo); break; case 2: // draw into a metafile, then transfer to the printer dc ourselves PrintTitle(pDC, pInfo, _T("IViewObject::Draw (Metafile)")); PrintControlUsingMetafile(pWnd, pDC, pInfo); break; case 3: // getdata into a metafile, then transfer to the printer dc ourselves PrintTitle(pDC, pInfo, _T("IDataObject::GetData (Metafile)")); PrintControlGetData(pWnd, pDC, pInfo); break; case 4: // use WM_PRINT to the print to the printer device context directly PrintTitle(pDC, pInfo, _T("WM_PRINT (Printer DC)")); PrintControlWmPrint(pWnd, pDC, pInfo); break; default: ASSERT(FALSE); // bad option selection break; } } ///////////////////////////////////////////////////////////////////////////// // These are the functions that do the control printing. ///////////////////////////////////////////////////////////////////////////// // ********************************************************* // PrintControlUsingScreen // // Prints the control by using the IViewObject::Draw routine // to an offscreen memory device context. This data is then // simply transferred to the printer device context. // // T