SHFILEINFO shInfo;
memset(&shInfo,0,sizeof(SHFILEINFO));
HIMAGELIST hImage = (HIMAGELIST)SHGetFileInfo("C:\\",0,&shInfo, sizeof( SHFILEINFO ),
 SHGFI_SYSICONINDEX | SHGFI_SMALLICON );
m_ImageList.Attach(hImage); 
m_ComboEx.SetImageList(&m_ImageList);
m_ComboEx.ResetContent();
char pchDrives[128] = {0};
char* pchDrive;
GetLogicalDriveStrings(sizeof(pchDrives), pchDrives); //列举盘符
pchDrive = pchDrives;
int nItem = 0;
while(*pchDrive)
{
 COMBOBOXEXITEM   cbi;
 CString      csText;
 cbi.mask = CBEIF_IMAGE|CBEIF_INDENT|CBEIF_OVERLAY|
   CBEIF_SELECTEDIMAGE|CBEIF_TEXT;
 SHFILEINFO shInfo; //定义文件信息
 int nIcon;
 SHGetFileInfo(pchDrive, 0, &shInfo, sizeof(shInfo),
  SHGFI_ICON|SHGFI_SMALLICON); //获取系统文件图标
 nIcon = shInfo.iIcon;
 //设置COMBOBOXEXITEM结构
 cbi.iItem  = nItem;
 cbi.pszText  = pchDrive;
 cbi.cchTextMax = strlen(pchDrive);
 cbi.iImage  = nIcon;
 cbi.iSelectedImage = nIcon;
 cbi.iOverlay  = 0;
 cbi.iIndent  = (0 & 0x03); 
 m_ComboEx.InsertItem(&cbi); //插入数据
 nItem++;
 pchDrive += strlen(pchDrive) + 1;
 }
 return TRUE; // return TRUE unless you set the focus to a control
}
void CDeleteDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
 if ((nID & 0xFFF0) == IDM_ABOUTBOX)
 {
 CAboutDlg dlgAbout;
 dlgAbout.DoModal();
 }
 else
 {
 CDialog::OnSysCommand(nID, lParam);
 }
}
void CDeleteDlg::OnPaint() 
{
 if (IsIconic())
 {
 CPaintDC dc(this); // device context for painting
 SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
 // Center icon in client rectangle
 int cxIcon = GetSystemMetrics(SM_CXICON);
 int cyIcon = GetSystemMetrics(SM_CYICON);
 CRect rect;
 GetClientRect(&rect);
 int x = (rect.Width() - cxIcon + 1) / 2;
 int y = (rect.Height() - cyIcon + 1) / 2;
 // Draw the icon
 dc.DrawIcon(x, y, m_hIcon);
 }
 else
 {
 CDialog::OnPaint();
 }
}
HCURSOR CDeleteDlg::OnQueryDragIcon()
{
 return (HCURSOR) m_hIcon;
}
void CDeleteDlg::DelFile(CString path,CString name)
{
 CString strtemp;
 if (path.Right(1) != "\\") //判断路径是否以\结尾
 strtemp.Format("%s\\*.*",path);//设置通配符
 else
 strtemp.Format("%s*.*",path);//设置通配符
 CFileFind findfile;
 BOOL bfind = findfile.FindFile(strtemp);//查找文件
 while (bfind)//循环查找
 {
 bfind = findfile.FindNextFile();//查找下一个文件
 if(!findfile.IsDots() && !findfile.IsDirectory())
 {
  CString str = findfile.GetFileName();
  int index  = str.ReverseFind('.');
  if(str.Right(str.GetLength()-index) == name)
  {
  DeleteFile(findfile.GetFilePath());
  }
 }
 else if (findfile.IsDots()) 
 {
  continue;
 }
 else if (findfile.IsDirectory())//如果是目录
 {
  DelFile(findfile.GetFilePath(),name);//递归查找
 }
 }
}
void CDeleteDlg::OnButdelete() 
{
 // TODO: Add your control notification handler code here
 CString path,name;
 m_ComboEx.GetWindowText(path);
 m_ExName.GetWindowText(name);//获得文件扩展名
 DelFile(path,name);
 MessageBox("已删除指定类型文件！");
}