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)

}