Result of last graphical operation.
Source position: graphh.inc line 748
function GraphResult: SmallInt;  | 
GraphResult returns an error-code for the last graphical operation. If the returned value is zero, all went well. A value different from zero means an error has occurred. besides all operations which draw something on the screen, the following procedures also can produce a GraphResult different from zero:
None.
  | 
Return a description of an error.  |