CPrintPreviewListBox

Introduction

CPrintPreviewListBox is a CListBox derived class which is designed for one simple task - printing and previewing in SDI and MDI applications (for the present not in dialog based applications).

This is the first version of the class with print and preview capabilities, so the class has some constraints such as the maximum number of characters per line (81), fixed font (Courier New) and as I already mentioned this class does not support dialog based applications.

However, this class is very useful for some special tasks such as print and print previewing the content of list boxes in your SDI or MDI application.

This class also supports line breaking.

Consequently I hope that following versions of this class will be able to change font and have other capabilities.

The CPrintPreviewListBox class has several important functions that should all be self explanatory:

void Print();
void SetPrintTitle( CString sNewTitle = "Default title" );
CString GetPrintTitle();
void SetOnlySelectedItems( bool bOnlySelectedItems );
bool GetOnlySelectedItems();
virtual void OnBeginPrinting (CDC*, CPrintInfo*);
virtual void OnPrint (CDC*, CPrintInfo*);
virtual void OnEndPrinting (CDC*, CPrintInfo*);

Using this class is very simple, as shown in the following lines of code (see the sampleView.h header file):

#include "PrintPreviewListBox.h"

class CSampleView : public CView
{
public:
	CPrintPreviewListBox m_lstPPListBox;
...
};

The sampleView.cpp file demonstrates using the class as follows:

int CSampleView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;

	// TODO: Add your specialized creation code here
	CSampleApp* pApp = (CSampleApp*) AfxGetApp();
	CRect rect;
	rect.SetRectEmpty();

	if( pApp->m_bSingleSelection )
	{
		if( m_lstPPListBox.Create( WS_CHILD | WS_BORDER | WS_VSCROLL, 
			rect, this, 100 ) == -1 )
			return -1;
	}
	else
	{
		if( m_lstPPListBox.Create( WS_CHILD | LBS_HASSTRINGS | LBS_MULTIPLESEL
			| LBS_EXTENDEDSEL | LBS_NOTIFY | LBS_NOINTEGRALHEIGHT 
			| LBS_USETABSTOPS | WS_VSCROLL,
			rect, this, 100 ) == -1 )
			return -1;
	}
	m_lstPPListBox.SetPrintTitle();
	m_lstPPListBox.ShowWindow (SW_SHOW);

	return 0;
}

void CSampleView::OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo)
{
	// TODO: add extra initialization before printing
	m_lstPPListBox.OnBeginPrinting(pDC, pInfo);
}

void CSampleView::OnEndPrinting(CDC* pDC, CPrintInfo* pInfo)
{
	// TODO: add cleanup after printing
	m_lstPPListBox.OnEndPrinting(pDC, pInfo);
}

void CSampleView::OnPrint(CDC* pDC, CPrintInfo* pInfo)
{
	// TODO: Add your specialized code here and/or call the base class
	m_lstPPListBox.OnPrint(pDC, pInfo);

//	CView::OnPrint(pDC, pInfo);
}

void CSampleView::OnOnlySelectedItems()
{
	// TODO: Add your command handler code here
	if( m_lstPPListBox.GetOnlySelectedItems() )
	{
		m_lstPPListBox.SetOnlySelectedItems( false );
		m_bOnlySelectedItems = FALSE;
	}
	else
	{
		m_lstPPListBox.SetOnlySelectedItems( true );
		m_bOnlySelectedItems = TRUE;
	}
}

You can see entire code in attached files in details.

Credits

Parts of the code were based on Chris Maunder's Printing without the Document/View framework and Koay Kah Hoe's Print Previewing without the Document/View Framework.

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