DelphiBasics
PointsEqual
Function
Compares two TPoint values for equality Classes unit
 function PointsEqual ( const Point1, Point2 : TPoint ) : Boolean;
Description
The PointsEqual function compares Point1 and Point2 parameter values and returns True if they are equal.
 
If either X or Y value of each point differs, then False is returned.
Related commands
Bounds Create a TRect value from top left and size values
Point Generates a TPoint value from X and Y values
PtInRect Tests to see if a point lies within a rectangle
Rect Create a TRect value from 2 points or 4 coordinates
TPoint Holds X and Y integer values
TRect Holds rectangle coordinate values
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Example code : Compare different and identical points
// Full Unit code.
// -----------------------------------------------------------
// You must store this code in a unit called Unit1 with a form
// called Form1 that has an OnCreate event called FormCreate.
 
unit Unit1;
 
interface
 
uses
  Classes,   // Unit containing the PointsEqual command
  Types,
  Forms, Dialogs;
 
type
  TForm1 = class(TForm)
    procedure FormCreate(Sender: TObject);
  end;
 
var
  
Form1: TForm1;
 
implementation
{$R *.dfm} // Include form definitions
 
procedure TForm1.FormCreate(Sender: TObject);

var
  start, finish : TPoint;

begin
  // Set up the start and end points
  start  := Point(1, 2);
  finish := Point(3, 4);

  // Is the start point equal to the finish point?
  if PointsEqual(start, finish)
  then ShowMessage('1,2 =  3,4')
  else ShowMessage('1,2 <> 3,4');

  // Try using PointsEqual with identical values
  if PointsEqual(Point(2,9), Point(2,9))
  then ShowMessage('2,9 =  2,9')
  else ShowMessage('2,9 <> 2,9');
end;
 
end.
Hide full unit code
   1,2 <> 3,4
   2,9 =  2,9
 
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