leftview.cpp

一个简易的聊天室程序

// LeftView.cpp : implementation of the CLeftView class
//

#include "stdafx.h"
#include "ChatServer.h"

#include "ChatServerDoc.h"
#include "LeftView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CLeftView

IMPLEMENT_DYNCREATE(CLeftView, CTreeView)

BEGIN_MESSAGE_MAP(CLeftView, CTreeView)
	//{{AFX_MSG_MAP(CLeftView)
	ON_WM_DESTROY()
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CTreeView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CTreeView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CTreeView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CLeftView construction/destruction

CLeftView::CLeftView()
{
	// TODO: add construction code here

}

CLeftView::~CLeftView()
{
}

BOOL CLeftView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CTreeView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CLeftView drawing

void CLeftView::OnDraw(CDC* pDC)
{
	CChatServerDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	// TODO: add draw code for native data here
}


/////////////////////////////////////////////////////////////////////////////
// CLeftView printing

BOOL CLeftView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

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

void CLeftView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

void CLeftView::OnInitialUpdate()
{
	CTreeView::OnInitialUpdate();

	LOGFONT lf;                        // Used to create the CFont.

    memset(&lf, 0, sizeof(LOGFONT));   // Clear out structure.
    lf.lfHeight = 16;                  // Request a 20-pixel-high font
    strcpy(lf.lfFaceName, "Verdana");    //    with face name "Arial".
    m_font.CreateFontIndirect(&lf);    // Create the font.
	SetFont(&m_font);		

	CWinApp* pApp = AfxGetApp();
	m_pImageList.Create(16, 16, ILC_COLOR8 | ILC_MASK,  9, 9);
	m_pImageList.Add(pApp->LoadIcon(IDI_CHATTER));
	GetTreeCtrl().SetImageList(&m_pImageList , TVSIL_NORMAL);
}

/////////////////////////////////////////////////////////////////////////////
// CLeftView diagnostics

#ifdef _DEBUG
void CLeftView::AssertValid() const
{
	CTreeView::AssertValid();
}

void CLeftView::Dump(CDumpContext& dc) const
{
	CTreeView::Dump(dc);
}

CChatServerDoc* CLeftView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CChatServerDoc)));
	return (CChatServerDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CLeftView message handlers

void CLeftView::OnDestroy() 
{
	CTreeView::OnDestroy();
	
	// TODO: Add your message handler code here
}


void CLeftView::UpdateChatters(CString sNickName)
{
	GetTreeCtrl().InsertItem(sNickName , 0 , 0, TVI_ROOT , TVI_LAST);
}


void CLeftView::DeleteChatter(CString sNickName)
{
	HTREEITEM hItem = GetTreeCtrl().GetRootItem();
	while(hItem != NULL)
	{
		CString sName = GetTreeCtrl().GetItemText(hItem);
		if(sName == sNickName)
		{
			GetTreeCtrl().DeleteItem(hItem);
			break;
		}
		hItem = GetTreeCtrl().GetNextItem(hItem, TVGN_NEXT);
	}

}