Class TUndoInsertPoint

Properties

Unit

type TUndoInsertPoint = class(TCustomUpdateScreenObjectUndo)

TUndoInsertPoint inserts a point into a TScreenObject.

	`FCanInsert: boolean;`
	`FPoint: TPoint2D;`
	`FPosition: integer;`
	`FScreenObject: TScreenObject;`
	`FSectionStarts: TValueArrayStorage;`
	`FPoints: TRealPointArray;`

	`function Description: string; override;`
	`constructor Create(const AScreenObject: TScreenObject; const APosition: integer; const APoint: TPoint2D);`
	`destructor Destroy; override;`
	`procedure DoCommand; override;`
	`procedure Redo; override;`
	`procedure Undo; override;`

	`FCanInsert: boolean;`
`FCanInsert` indicates whether or not the point can be inserted.

	`FPoint: TPoint2D;`
`FPoint` is the point to be inserted.

	`FPosition: integer;`
`FPosition` is the position in TScreenObject.Points where FPoint should be inserted.

	`FScreenObject: TScreenObject;`
`FScreenObject` is the TScreenObject into which FPoint is being inserted.

	`FSectionStarts: TValueArrayStorage;`

	`FPoints: TRealPointArray;`

	`function Description: string; override;`
`Description` describes what this `TUndoInsertPoint` does. It is used in menu captions and hints.

constructor Create(const AScreenObject: TScreenObject; const APosition: integer; const APoint: TPoint2D);

Create creates an instance of TUndoInsertPoint.

AScreenObject: is is the TScreenObject into which APoint is being inserted.
APosition: is the position in TScreenObject.Points where APoint should be inserted.
APoint: is the point to be inserted.

	`destructor Destroy; override;`

	`procedure DoCommand; override;`
`DoCommand` inserts the point.

	`procedure Redo; override;`
`Redo` calls DoCommand.

	`procedure Undo; override;`
`Undo` deletes the point.

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