InvalidPoint¶
Check whether a point is invalid.
Declaration¶
Source position: classesh.inc line 3020
function InvalidPoint(X: Integer; Y: Integer) : Boolean;
function InvalidPoint(const At: TPoint) : Boolean;
function InvalidPoint(const At: TSmallPoint) : Boolean;
Description¶
InvalidPoint returns True if the X and Y coordinates (of the TPoint or TSmallPoint records, if one of these versions is used) are -1.
See also¶
| Name | Description |
|---|---|
| TPoint | Special type to handle a fake TComponent position. |
| TSmallPoint | Type to describe point in a small plane. |
| PointsEqual | Check whether two TPoint variables are equal. |