objective c - NSTableView Changing Text Color for a row -

i need change following properties nstable view 1 -- change color:row color , text color when selected 2 -- change text color , each row depends upon input parameter,

for changing textcolor each row, should override delegate method willdisplaycell, have done , till now,

-- creating table ----

pmytableview       = [[[customtableview alloc] initwithframe:clipviewbounds] autorelease];   nstablecolumn*  firstcolumn     = [[[nstablecolumn alloc] initwithidentifier:@"firstcolumn"] autorelease];  [firstcolumn setwidth:35];  [pmytableview  addtablecolumn:firstcolumn];  nstablecolumn*  secondcolumn        = [[[nstablecolumn alloc] initwithidentifier:@"secondcolumn"] autorelease];  [secondcolumn setwidth:180];  [pmytableview  addtablecolumn:secondcolumn];     [pmytableview setrowheight:30];      [self setcontacttabledisplayattribute];  [pmytableview setdatasource:self]; [scrollview setdocumentview:ponlinectview];      [pmytableview setdelegate:self]  ; 

--- other delegate method -------------

- (id) tableview:(nstableview *)atableview objectvaluefortablecolumn:(nstablecolumn *)atablecolumn row:(nsinteger)rowindex{     if([pcolname isequaltostring:@"secondcolumn"])      {            // here there logic , proper string wanted display         return @"tempstring";      }  } 

---- how setting text color ---

- (void)tableview:(nstableview *)atableview willdisplaycell:(id)acell fortablecolumn:(nstablecolumn *)atablecolumn row:(int)rowindex {      nsstring *colname = [atablecolumn identifier];     if([colname isequaltostring:@"secondcolumn"]){         nstextfieldcell *pcell = acell;         [pcell settextcolor:[nscolor bluecolor]];     }  } 

with above code, going exception in log, see line -[nscell settextcolor:]: unrecognized selector sent instance looks somewhere need set text field cell, how , have no idea, kindly me,

another thing is, don't need background cell, once when cell selected , might need change background or can highlight color, can same in willdisplaycell

it has been while since have done refer blog post corbin dunn when need it: cocoa: willdisplaycell delegate method of nstableview, [nscell settextcolor], , “source lists”

by way, corbin works @ apple , understand responsible nstableview. when blogs cocoa sure bookmark it.