主要源码：void CFDlg::OnChangeEdit1() { UpdateData() m_strExt.MakeUpper() m_list.ResetContent() if(m_strExt.GetLength()==0) return CStdioFile sf if(sf.Open("FileExt.txt",Cfile::modeRead)) { CString strTemp,strOut while(sf.ReadString(strTemp)) { if(strTemp.Left(m_strExt.GetLength()) ==m_strExt) { m_list.AddString(strTemp) } } } sf.Close() m_list.SetCurSel(0) this->OnSelchangeList2() } void CFDlg::OnSelchangeList2() { CString strTemp,strExt m_list.GetText(m_list.GetCurSel(),strTemp) strExt=strTemp.Left(strTemp.FindOneOf(" ")) //MessageBox(strExt) CString strFileName ="eee."+strExt //MessageBox(strFileName) SHFILEINFO shfi memset(&shfi,0,sizeof(shfi)) //或者ZeroMemory(&shfi,sizeof(shfi)) ::SHGetFileInfo(strFileName, FILE_ATTRIBUTE_NORMAL, &shfi, sizeof(shfi), SHGFI_ICON|SHGFI_USEFILEATTRIBUTES) m_icon.SetIcon(shfi.hIcon) }