transbutton1.cpp

透明按钮

// Transbutton1.cpp : implementation file
//

#include "stdafx.h"
#include "TransButton.h"
#include "Transbutton1.h"

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

/////////////////////////////////////////////////////////////////////////////
// CTransbutton

CTransbutton::CTransbutton()
{
	m_TextColorDark=m_TextColorLight=RGB(255,255,255);
}

CTransbutton::~CTransbutton()
{
}


BEGIN_MESSAGE_MAP(CTransbutton, CButton)
	//{{AFX_MSG_MAP(CTransbutton)
		// NOTE - the ClassWizard will add and remove mapping macros here.
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTransbutton message handlers

void CTransbutton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct) 
{
	// TODO: Add your code to draw the specified item
	CDC *pDC = CDC::FromHandle(lpDrawItemStruct->hDC);	

	CString sCaption;
	CRect rect=lpDrawItemStruct->rcItem;

	GetWindowText(sCaption);
//	MessageBox(sCaption);
	pDC->SetBkMode(TRANSPARENT);

	if(m_hHdc!=NULL)
		PaintBG(pDC);
	pDC->SetTextColor(m_TextColorDark);
	pDC->DrawText(sCaption, rect, DT_SINGLELINE|DT_RIGHT|DT_VCENTER);
		
}

void CTransbutton::PaintBG(CDC *pDC)
{
	CClientDC dc(GetParent());
	CRect cltRect, wndRect;

	GetClientRect(&cltRect);
	GetWindowRect(&wndRect);
	GetParent()->ScreenToClient(&wndRect);

	::BitBlt(pDC->m_hDC, 0, 0, cltRect.Width(), cltRect.Height(), m_hHdc, wndRect.left, wndRect.top, SRCCOPY);
}

void CTransbutton::SetTransparent()
{
	HBITMAP hBmp = ::LoadBitmap(::AfxGetInstanceHandle(), MAKEINTRESOURCE(IDB_BITMAP_BACK));
	m_hHdc = ::CreateCompatibleDC(NULL);
	SelectObject(m_hHdc, hBmp);
}

COLORREF CTransbutton::SetTextColor(COLORREF DarkColor, COLORREF LightColor)
{
	m_TextColorDark=DarkColor;
	m_TextColorLight=LightColor;
		
	return (DarkColor);
}