contentmenu.cpp

实现了一个聊天系统的客户端

// ContentMenu.cpp : implementation file
//

#include "stdafx.h"
#include "resource.h"
#include "ContentMenu.h"

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

#include "MyQQClientDlg.h"

/////////////////////////////////////////////////////////////////////////////
// CContentMenu

CContentMenu::CContentMenu()
{
	m_pContents = NULL;
	m_nNumItems = 0;

    m_bLBDown   = false;
    m_bHilight  = true;
}

CContentMenu::~CContentMenu()
{
}


BEGIN_MESSAGE_MAP(CContentMenu, CListBox)
	//{{AFX_MSG_MAP(CContentMenu)
	ON_WM_MOUSEMOVE()
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	ON_WM_LBUTTONDBLCLK()
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CContentMenu message handlers
#define ITEM_HEIGHT   80
void CContentMenu::MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct)
{
	lpMeasureItemStruct->itemHeight = ITEM_HEIGHT;
}

void CContentMenu::DrawItem(LPDRAWITEMSTRUCT lpDIS) 
{
	if((m_pContents == NULL) || (m_nNumItems == 0)) {
		return ;
	}

	CDC * pDC = CDC::FromHandle(lpDIS->hDC);

	CRect           rcItem(lpDIS->rcItem);
	CRect           rClient(rcItem);
	CRect           rText;
	CPoint          Pt(((rcItem.Width() - 32) /2 ), rcItem.top + 15);
	pCONTENT_ITEMS  pContents    = &m_pContents[lpDIS->itemID];

	CBitmap * bmp = new CBitmap;
	bmp->LoadBitmap(pContents->nImageID);

	pDC->SetBkMode(TRANSPARENT);

	rClient.DeflateRect(5,10);
	rcItem.CopyRect(rClient);
	rText.CopyRect(rClient);
	rText.top += 35;

	if (lpDIS->itemAction & ODA_DRAWENTIRE)
	{
		DrawIcon(pDC,Pt,bmp);
		pDC->DrawText(pContents->strText, rText, DT_CENTER|DT_WORDBREAK);
    }

	if  (m_bLBDown)
	{
		Pt.x += 2;
		Pt.y += 2;
		rcItem.OffsetRect(2,2);
		rText.OffsetRect(2,2);
	}

	if ((lpDIS->itemState & ODS_SELECTED) &&
		(lpDIS->itemAction & (ODA_SELECT | ODA_DRAWENTIRE)))
	{
		if(m_bHilight)
        {
			pDC->FillSolidRect(rClient,RGB(225,225,255)/*GetSysColor(COLOR_BTNFACE)*/);

			if  (m_bLBDown)
				pDC->Draw3dRect(rClient,GetSysColor(COLOR_3DSHADOW), GetSysColor(COLOR_BTNHIGHLIGHT));
			else
				pDC->Draw3dRect(rClient,GetSysColor(COLOR_BTNHIGHLIGHT),GetSysColor(COLOR_3DSHADOW));
		}

		DrawIcon(pDC,Pt,bmp);
		pDC->DrawText(pContents->strText, rText, DT_CENTER|DT_WORDBREAK);
	}

	if (!(lpDIS->itemState & ODS_SELECTED) &&
		(lpDIS->itemAction & ODA_SELECT))
	{
		pDC->FillSolidRect(rClient,GetSysColor(COLOR_WINDOW));
		DrawIcon(pDC,Pt,bmp);
		pDC->DrawText(pContents->strText, rText, DT_CENTER|DT_WORDBREAK);
	}
}


void CContentMenu::OnMouseMove(UINT nFlags, CPoint point) 
{

    m_Point  = point;

    SetTimer(10,10,NULL);

	CListBox::OnMouseMove(nFlags, point);
}

void CContentMenu::OnLButtonDown(UINT nFlags, CPoint point) 
{
    m_bLBDown	= true;
    SetCurSel(GetCurSel());
	
	CListBox::OnLButtonDown(nFlags, point);
}

void CContentMenu::OnLButtonUp(UINT nFlags, CPoint point) 
{
    m_bLBDown	= false;
    SetCurSel(GetCurSel());

	CListBox::OnLButtonUp(nFlags, point);
}

void CContentMenu::OnTimer(UINT nIDEvent)
{
    BOOL        bOutSide;
    CRect       rItem;
	CPoint      CurPt;
	CRect       rWindow;
    int         nIndex;

    GetWindowRect(rWindow);
    GetCursorPos(&CurPt);

    if  (!rWindow.PtInRect(CurPt))
    {
        if  (!m_bLBDown)
        {
            SetCurSel(-1);
            m_bHilight = false;
        }

        KillTimer(1);
        return;
    }

    m_bHilight = true;
    nIndex = ItemFromPoint(m_Point, bOutSide);

    if  (nIndex != GetCurSel() && !bOutSide)
        SetCurSel(nIndex);
}

void CContentMenu::DrawIcon(CDC *pDC, CPoint pt, CBitmap *bmp)
{
//
	CDC		dcMemory;
	CBitmap*	pOldBmp ;

	dcMemory.CreateCompatibleDC(pDC);
	pOldBmp = dcMemory.SelectObject(bmp);

	pDC->BitBlt(pt.x, pt.y, 
		32, 32, &dcMemory, 0, 0, SRCCOPY);
	dcMemory.SelectObject(pOldBmp);
	//
}

void CContentMenu::OnLButtonDblClk(UINT nFlags, CPoint point) 
{
    SetCurSel(GetCurSel());
	
	m_wndParent->SendMsg(GetCurSel());
	
	CListBox::OnLButtonDblClk(nFlags, point);
}