多媒体编程

开发平台：
Visual C++

Label.cpp：源码内容
							// Label.cpp : implementation file
//
#include "stdafx.h"
#include "robot.h"
#include "Label.h"
//#include "shellapi.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CLabel
CLabel::CLabel()
{
	m_crText = GetSysColor(COLOR_WINDOWTEXT);
	m_hBrush = ::CreateSolidBrush(GetSysColor(COLOR_3DFACE));
	::GetObject((HFONT)GetStockObject(DEFAULT_GUI_FONT),sizeof(m_lf),&m_lf);
	m_font.CreateFontIndirect(&m_lf);
	m_bTimer = FALSE;
	m_bState = FALSE;
	m_bLink = TRUE;
	m_hCursor = NULL;
	m_Type = None;
	m_hwndBrush = ::CreateSolidBrush(GetSysColor(COLOR_3DFACE));
}
CLabel::~CLabel()
{
	m_font.DeleteObject();
	::DeleteObject(m_hBrush);
}
CLabel& CLabel::SetText(const CString& strText)
{
	SetWindowText(strText);
	return *this;
}
CLabel& CLabel::SetTextColor(COLORREF crText)
{
	m_crText = crText;
	RedrawWindow();
	return *this;
}
CLabel& CLabel::SetFontBold(BOOL bBold)
{	
	m_lf.lfWeight = bBold ? FW_BOLD : FW_NORMAL;
	ReconstructFont();
	RedrawWindow();
	return *this;
}
CLabel& CLabel::SetFontUnderline(BOOL bSet)
{	
	m_lf.lfUnderline = bSet;
	ReconstructFont();
	RedrawWindow();
	return *this;
}
CLabel& CLabel::SetFontItalic(BOOL bSet)
{
	m_lf.lfItalic = bSet;
	ReconstructFont();
	RedrawWindow();
	return *this;	
}
CLabel& CLabel::SetSunken(BOOL bSet)
{
	if (!bSet)
		ModifyStyleEx(WS_EX_STATICEDGE,0,SWP_DRAWFRAME);
	else
		ModifyStyleEx(0,WS_EX_STATICEDGE,SWP_DRAWFRAME);
		
	return *this;	
}
CLabel& CLabel::SetBorder(BOOL bSet)
{
	if (!bSet)
		ModifyStyle(WS_BORDER,0,SWP_DRAWFRAME);
	else
		ModifyStyle(0,WS_BORDER,SWP_DRAWFRAME);
		
	return *this;	
}
CLabel& CLabel::SetFontSize(int nSize)
{
	nSize*=-1;
	m_lf.lfHeight = nSize;
	ReconstructFont();
	RedrawWindow();
	return *this;
}
CLabel& CLabel::SetBkColor(COLORREF crBkgnd)
{
	if (m_hBrush)
		::DeleteObject(m_hBrush);
	
	m_hBrush = ::CreateSolidBrush(crBkgnd);
	return *this;
}
CLabel& CLabel::SetFontName(const CString& strFont)
{	
	strcpy(m_lf.lfFaceName,strFont);
	ReconstructFont();
	RedrawWindow();
	return *this;
}
BEGIN_MESSAGE_MAP(CLabel, CStatic)
	//{{AFX_MSG_MAP(CLabel)
	ON_WM_CTLCOLOR_REFLECT()
	ON_WM_TIMER()
	ON_WM_LBUTTONDOWN()
	ON_WM_SETCURSOR()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CLabel message handlers
HBRUSH CLabel::CtlColor(CDC* pDC, UINT nCtlColor) 
{
	// TODO: Change any attributes of the DC here
	
	// TODO: Return a non-NULL brush if the parent's handler should not be called
	if (CTLCOLOR_STATIC == nCtlColor)
	{
		pDC->SelectObject(&m_font);
		pDC->SetTextColor(m_crText);
		pDC->SetBkMode(TRANSPARENT);
	}
	if (m_Type == Background)
	{
		if (!m_bState)
			return m_hwndBrush;
	}
	return m_hBrush;
}
void CLabel::ReconstructFont()
{
	m_font.DeleteObject();
	BOOL bCreated = m_font.CreateFontIndirect(&m_lf);
	ASSERT(bCreated);
}
CLabel& CLabel::FlashText(BOOL bActivate)
{
	if (m_bTimer)
	{
		SetWindowText(m_strText);
		KillTimer(1);
	}
	if (bActivate)
	{
		GetWindowText(m_strText);
		m_bState = FALSE;
		
		m_bTimer = TRUE;
		SetTimer(1,500,NULL);
		m_Type = Text;
	}
	return *this;
}
CLabel& CLabel::FlashBackground(BOOL bActivate)
{
	if (m_bTimer)
		KillTimer(1);
	if (bActivate)
	{
		m_bState = FALSE;
		m_bTimer = TRUE;
		SetTimer(1,500,NULL);
		m_Type = Background;
	}
	return *this;
}
void CLabel::OnTimer(UINT nIDEvent) 
{
	m_bState = !m_bState;
	switch (m_Type)
	{
		case Text:
			if (m_bState)
				SetWindowText("");
			else
				SetWindowText(m_strText);
		break;
		case Background:
			InvalidateRect(NULL,FALSE);
			UpdateWindow();
		break;
	}
	
	CStatic::OnTimer(nIDEvent);
}
CLabel& CLabel::SetLink(BOOL bLink)
{
	m_bLink = bLink;
	if (bLink)
		ModifyStyle(0,SS_NOTIFY);
	else
		ModifyStyle(SS_NOTIFY,0);
	return *this;
}
void CLabel::OnLButtonDown(UINT nFlags, CPoint point) 
{
	CString strLink;
	GetWindowText(strLink);
	ShellExecute(NULL,"open",strLink,NULL,NULL,SW_SHOWNORMAL);
		
	CStatic::OnLButtonDown(nFlags, point);
}
BOOL CLabel::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) 
{
	if (m_hCursor)
	{
		::SetCursor(m_hCursor);
		return TRUE;
	}
	return CStatic::OnSetCursor(pWnd, nHitTest, message);
}
CLabel& CLabel::SetLinkCursor(HCURSOR hCursor)
{
	m_hCursor = hCursor;
	return *this;
}

						