//CString转CTime==============
CString strT1="2020-02-02 02:02:02";
int ny,nm.nd;
sscanf(strT1.GetBuffer(strT1.GetLength()),"%d-%d-%d",&ny,&nm,&nd);
CTime T1(a,b,c,0,0,0);
//CTime转CString
CTime T1=CTime::GetCurrentTime();
CString strT1;
strT1.Format("%d-%d-%d",T1.GetYear,T1.GetMonth(),T1.GetDay());