{Grfermsg.PAS}
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 {Sample code for the GraphErrorMsg function.}

  uses Graph;

 var
   GraphDriver, GraphMode: Integer;
   ErrorCode: Integer;
 begin
   GraphDriver := Detect;
   InitGraph(GraphDriver, GraphMode, '');
   ErrorCode := GraphResult;
   if ErrorCode <> grOk then
   begin
     Writeln('Graphics error: ', GraphErrorMsg(ErrorCode));
     Readln;
     Halt(1);
   end;
   Line(0, 0, GetMaxX, GetMaxY);
   Readln;
   CloseGraph;
 end.