www.pudn.com > VC写的MP3播放器源代码.zip > AnimateIcon.cpp

// AnimateIcon.cpp : implementation of the CAnimateIcon class 
///////////////////////////////////////////////////////////////////////////// 
 
#include "stdafx.h" 
#include "AnimateIcon.h" 
 
// default constructor 
CAnimateIcon::CAnimateIcon() 
{ 
	m_iImageCounter = -1; 
	m_iMaxNoOfImages = -99; 
	m_imgList.m_hImageList = NULL; 
} 
 
// default do nothing destructor 
CAnimateIcon::~CAnimateIcon() 
{ 
	if (hPrevIcon)  
		DestroyIcon(hPrevIcon); 
} 
 
// This is the first function which needs to be called in order 
// to fill the image list 
// Parameters : 
// ------------ 
// int IDOfImgListResource - pass the Resource ID of a toolbar resource 
//                           containing the image list 
// int numberOfImages      - Number of images (16x16) in the toolbar resource 
// transparentColor        - RGB value of color you want to be transparent 
BOOL CAnimateIcon::SetImageList(int IDOfImgListResource,int numberOfImages,COLORREF transparentColor) 
{ 
	if(numberOfImages <= 0) 
		return FALSE; 
	m_iMaxNoOfImages = numberOfImages; 
	VERIFY(m_imgList.Create(IDOfImgListResource,16,1,transparentColor)); 
	return TRUE; 
} 
 
// This function needs to be called repetatively to show next image 
// Parameters : 
// ------------ 
// NONE 
 
BOOL CAnimateIcon::ShowNextImage() 
{ 
	if(m_imgList.m_hImageList == NULL) 
		return FALSE; 
	m_iImageCounter++; 
	if(m_iImageCounter >= m_iMaxNoOfImages) 
		m_iImageCounter =0; 
	// extract the icon from imagelist 
	hIcon = m_imgList.ExtractIcon(m_iImageCounter); 
	// send the message to frame to update icon 
	HICON hPrevIcon = (HICON) 	AfxGetMainWnd()->SendMessage(WM_SETICON,TRUE,(LPARAM)hIcon);	 
	// Free the previous icon resource 
	if (hPrevIcon) 	 
	    DestroyIcon(hPrevIcon); 
	return TRUE; 
}