How to keep the scroll bar at the bottom of the edit box when multiple lines are displayed

Two methods:

① Cedit * pedit = (cedit *) getdlgitem (idc_edit_rxdata ));

Pedit-> linescroll (pedit-> getlinecount (); // scroll down to the bottom

Int tmplen = pedit-> getwindowtextlength ();

Pedit-> setsel (tmplen,-1, true); // locate the cursor to the end of the content

In this way, a screen will pop up!

② Int nlen = m_ctlrxdata.getwindowtextlength ();

M_ctlrxdata.setsel (nlen, nlen );

M_ctlrxdata.replacesel (strtemp );

M_ctlrxdata is the control variable and strtemp is the content to be displayed. No pop-up screen is displayed.