VC: document-based Printing

Print process:

The OnPreparePrinting () function is used to print some information.

The OnBeginPrinting () function creates a print resource.

The OnPrepareDC () function specifies the information displayed on a page.

Call the OnPrint () function to print a page.

 

1. When using the Wizard to generate a single document and multi-document application, you can select whether the application supports print and print preview. (Part 1 of the wizard)

2. Convert the default MM_TEXT mode to the MM_LOENGLISH mode. The method is as follows: SetMapMode (MM_LOENGLISH );

3. Multi-page printing:

You can set the number of printed pages in the OnBeginPrinting () function during print or preview.

For example:

Void CTestView: OnBeginPrinting (CDC * pDC, CPrintInfo * pInfo)

{

// TODO: add extra initialization before printing

CTestDoc * pDoc = GetDocument ();

ASSERT_VALID (pDoc );

// Obtain the vertical resolution of the printed paper

Int height = pDC-> GetDeviceCaps (VERTRES );

// Obtain the number of 1 inch printable points on the printed paper

Int ypixnum = pDC-> GetDeviceCaps (LOGPIXELSY );

// Set the page number

PInfo-> SetMaxPage (3 * ypixnum * drawheight/height + 1 );

}

Solve the problem that the content on pages 1st and 2 is the same: Set the information on the top of the page.

As follows:

Void CTestView: OnPrepareDC (CDC * pDC, CPrintInfo * pInfo)

{

// TODO: Add your specialized code here and/or call the base class

If (pDC-> IsPrinting ())

{

PDC-> SetMapMode (MM_LOENGLISH );

// Obtain the vertical resolution of the printed paper

Int height = pDC-> GetDeviceCaps (VERTRES );

// Obtain the coordinates of the current page

Int y = height * (pInfo-> m_nCurPage-1 );

PDC-> SetViewportOrg (0,-y );

}

CView: OnPrepareDC (pDC, pInfo );

}