A Logging Listbox Control

// LogFrame.cpp : implementation file
//

#include "stdafx.h"
#include "log.h"
#include "LogFrame.h"
#include "TraceEvent.h"
#include "Trace.h"
#include "LogWindowView.h" // *** JMN
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CLogFrame

IMPLEMENT_DYNCREATE(CLogFrame, CMDIChildWnd)

CLogFrame::CLogFrame()
{
}

CLogFrame::~CLogFrame()
{
}


BEGIN_MESSAGE_MAP(CLogFrame, CMDIChildWnd)
	//{{AFX_MSG_MAP(CLogFrame)
	ON_WM_SIZE()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CLogFrame message handlers

/****************************************************************************
*                            CLogFrame::AddString
* Inputs:
*       TraceEvent * event: Event to add to logging window
* Result: int
*       Position at which it was added
* Effect: 
*       Adds the event to the trace log
****************************************************************************/

int CLogFrame::AddString(TraceEvent * event)                         // *** JMN
    {                                                                // *** JMN
     CLogWindowView * child = (CLogWindowView *)GetWindow(GW_CHILD); // *** JMN
     return child->AddString(event);                                 // *** JMN
    } // CLogFrame::AddString                                        // *** JMN

/****************************************************************************
*                              CLogFrame::OnSize
* Inputs:
*       UINT nType: Sizing type
*	int cx: Width
*	int cy: Height
* Result: void
*       
* Effect: 
*       Computes the new client area and resizes the child window, the
*       CFormView, to fit in that area.
****************************************************************************/

void CLogFrame::OnSize(UINT nType, int cx, int cy)                   // *** JMN
{                                                                    // *** JMN
	CMDIChildWnd::OnSize(nType, cx, cy);                         // *** JMN
	                                                             // *** JMN
	CWnd * child = GetWindow(GW_CHILD);                          // *** JMN
	CRect r;                                                     // *** JMN
	GetClientRect(&r);                                           // *** JMN
	child->SetWindowPos(NULL, 0, 0, r.Width(), r.Height(),       // *** JMN
			    SWP_NOMOVE | SWP_NOZORDER);              // *** JMN
}                                                                    // *** JMN

/****************************************************************************
*                         CLogFrame::PreCreateWindow
* Inputs:
*       CREATESTRUCT & cs: Creation structure
* Result: BOOL
*       Result of CMDIChildWnd::PreCreateWindow
* Effect: 
*       Removes the automatic-titling flag from the styles so the
*	title remains fixed (it is not associated with any file)
****************************************************************************/

BOOL CLogFrame::PreCreateWindow(CREATESTRUCT& cs)                    // *** JMN
{                                                                    // *** JMN
    cs.style &= ~FWS_ADDTOTITLE;                                     // *** JMN
	                                                             // *** JMN
	return CMDIChildWnd::PreCreateWindow(cs);                    // *** JMN
}                                                                    // *** JMN


/****************************************************************************
*                             CLogger::AddString
* Inputs:
*       TraceEvent * event
* Result: int
*       Position of insertio
* Effect: 
*       Adds the element to the list. If the list does not exist, delets the
*	event.
****************************************************************************/

int CLogger::AddString(TraceEvent * event)
    {
     if(IsValid())
	return frame->AddString(event);
     else
	{ /* no window */
	 delete event;
	 return LB_ERR;
	} /* no window */
    } // CLogger::AddString