program PutBlank;
uses PXEngine, WinCrt;

const TableName = 'Table';

var   PxErr: Integer;
      TblHandle: TableHandle;
      RecHandle: RecordHandle;
      FldHandle: FieldHandle;

procedure PX(Code : integer);
begin
  writeln(PXErrMsg(Code));
end;

begin
  PX(PXWinInit('MyApp', pxShared));
  PX(PXTblOpen(TableName, TblHandle, 0, False));
  PX(PXRecBufOpen(TblHandle, RecHandle));
  PX(PXFldHandle(TblHandle, 'Alpha Field', FldHandle));

  (* Put blanks into record *)
  PxErr := PXPutBlank(RecHandle, FldHandle);
  if PxErr <> PxSuccess then
    Writeln(PxErrMsg(PxErr))
  else PX(PXRecUpdate(TblHandle,RecHandle));

  PX(PXRecBufClose(RecHandle));
  PX(PXTblClose(TblHandle));
  PX(PXExit);
end.