实现了数字证书的制作、SSL安全通讯、加解密操作等功能

				// ColorListBox.cpp : implementation file
				//
				
				#include "stdafx.h"
				#include "UsbKey.h"
				#include "ColorListBox.h"
				
				#ifdef _DEBUG
				#define new DEBUG_NEW
				#undef THIS_FILE
				static char THIS_FILE[] = __FILE__;
				#endif
				
				/////////////////////////////////////////////////////////////////////////////
				// CColorListBox
				
				CColorListBox::CColorListBox()
				{
				}
				
				CColorListBox::~CColorListBox()
				{
				}
				
				
				BEGIN_MESSAGE_MAP(CColorListBox, CListBox)
					//{{AFX_MSG_MAP(CColorListBox)
						// NOTE - the ClassWizard will add and remove mapping macros here.
					//}}AFX_MSG_MAP
				END_MESSAGE_MAP()
				
				/////////////////////////////////////////////////////////////////////////////
				// CColorListBox message handlers
				
				void CColorListBox::DrawItem(LPDRAWITEMSTRUCT lpDIS) 
				{
					// TODO: Add your code to draw the specified item
					if ((int)lpDIS->itemID < 0)
						return; 
				
					CDC* pDC = CDC::FromHandle(lpDIS->hDC);
				
					COLORREF crText;
					CString sText;
					COLORREF crNorm;
					HICON icon;
					switch(lpDIS->itemData)
					{
						case M_OK:
							crNorm=RGB(0,128,0);
							icon=AfxGetApp()->LoadIcon(IDI_ICON_OK);
							break;
						case M_ERROR:
							crNorm=RGB(255,0,0);
							icon=AfxGetApp()->LoadIcon(IDI_ICON_ERROR);
							break;
						case M_WARING:
							crNorm=RGB(0,0,255);
							icon=AfxGetApp()->LoadIcon(IDI_ICON_WARING);
							break;
					}
				
				
					// 字符串颜色
					COLORREF crHilite = RGB(255-GetRValue(crNorm), 255-GetGValue(crNorm), 255-GetBValue(crNorm));
					CRect rectBK(lpDIS->rcItem.left+22,lpDIS->rcItem.top,lpDIS->rcItem.right+18,lpDIS->rcItem.bottom);
				
				
					// 如果被选中，使用高亮色会矩形
					if ((lpDIS->itemState & ODS_SELECTED) &&
						 (lpDIS->itemAction & (ODA_SELECT | ODA_DRAWENTIRE)))
					{
						CBrush brush(crNorm);
						pDC->FillRect(rectBK, &brush);
					}
				
					// 如果取消选中，恢复
					if (!(lpDIS->itemState & ODS_SELECTED) &&	(lpDIS->itemAction & ODA_SELECT))
					{
						CBrush brush(::GetSysColor(COLOR_WINDOW));
						pDC->FillRect(rectBK, &brush);
					}	 	
				
					// 绘制焦点矩形
					if ((lpDIS->itemAction & ODA_FOCUS) && (lpDIS->itemState & ODS_FOCUS))
						pDC->DrawFocusRect(&lpDIS->rcItem); 
				
					// 取消焦点矩形
					if ((lpDIS->itemAction & ODA_FOCUS) &&	!(lpDIS->itemState & ODS_FOCUS))
						pDC->DrawFocusRect(&lpDIS->rcItem); 
				
				
					// 透明背景
					int nBkMode = pDC->SetBkMode(TRANSPARENT);
				
					
					if (lpDIS->itemData)		
					{
						if (lpDIS->itemState & ODS_SELECTED)
							crText = pDC->SetTextColor(crHilite);
						else if (lpDIS->itemState & ODS_DISABLED)
							crText = pDC->SetTextColor(::GetSysColor(COLOR_GRAYTEXT));
						else
							crText = pDC->SetTextColor(crNorm);
					}
					
					else
					{
						if (lpDIS->itemState & ODS_SELECTED)
							crText = pDC->SetTextColor(::GetSysColor(COLOR_HIGHLIGHTTEXT));
						else if (lpDIS->itemState & ODS_DISABLED)
							crText = pDC->SetTextColor(::GetSysColor(COLOR_GRAYTEXT));
						else
							crText = pDC->SetTextColor(::GetSysColor(COLOR_WINDOWTEXT));
					}
				
				
					// 显示字符串
					GetText(lpDIS->itemID, sText);
					CRect rect = lpDIS->rcItem;
				
					// 字符格式
					UINT nFormat = DT_LEFT | DT_SINGLELINE | DT_VCENTER;
					if (GetStyle() & LBS_USETABSTOPS)
						nFormat |= DT_EXPANDTABS;
					
				
					pDC->DrawText(sText, -1, &rectBK, nFormat | DT_CALCRECT&DT_CENTER);
					pDC->DrawText(sText, -1, &rectBK, nFormat);
					DrawIconEx(lpDIS->hDC,rect.left+2,rect.top+1,icon,16,16,0,NULL, DI_NORMAL | DI_COMPAT);
					pDC->SetTextColor(crText); 
					pDC->SetBkMode(nBkMode);		
				}
				
				void CColorListBox::MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct) 
				{
					// TODO: Add your code to determine the size of specified item
					//设置每一项的高度
					lpMeasureItemStruct->itemHeight = ::GetSystemMetrics(SM_CYMENU);
					
				}
				
				int CColorListBox::AddMsg(CString lpszItem,DWORD info)
				{
					int nItem = AddString(lpszItem);
					if (nItem >= 0)
						SetItemData(nItem,info);
					int numList=GetCount()-1;
					SetTopIndex(numList);
					SetCurSel(numList);
					//水平滚动
					int max_width=0;
					CSize sz;
					CClientDC dc(this);
					for(int i=0;i					{
						GetText(i,lpszItem);
						sz=dc.GetTextExtent(lpszItem);
						if(max_width							max_width=sz.cx;
					}
					SendMessage(LB_SETHORIZONTALEXTENT,max_width,0);
				
					return nItem;
				}