Vcl.Controls.TGestureEventInfo

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• Fields

Delphi

  TGestureEventInfo = record
    GestureID: TGestureID;
    Location: TPoint;
    Flags: TInteractiveGestureFlags;
    Angle: Double;
    InertiaVector: TSmallPoint;
    case Integer of
      0: (Distance: Integer);
      1: (TapLocation: TSmallPoint);
  end;

C++

struct DECLSPEC_DRECORD TGestureEventInfo
{
public:
    TGestureID GestureID;
    System::Types::TPoint Location;
    TInteractiveGestureFlags Flags;
    double Angle;
    System::Types::TSmallPoint InertiaVector;
public:
    union
    {
        struct
        {
            System::Types::TSmallPoint TapLocation;
        };
        struct
        {
            int Distance;
        };
    };
};

Properties

Type	Visibility	Source	Unit	Parent
record struct	public	Vcl.Controls.pas Vcl.Controls.hpp	Vcl.Controls	Vcl.Controls

Description

Describes a gesture event.

TGestureEventInfo is a record that contains information about a gesture event. TGestureEventInfo is always associated with a gesturing event. The TGestureEvent type passes a TGestureEventInfo record to the user code.

The following table lists the fields that constitute a TGestureEventInfo record:

Field	Description
GestureID	The ID of the gesture that is emitted. ID is an integer value uniquely identifying the gesture.
Location	The current point on the control's surface. Location contains the X and Y coordinates of the last known point.
Flags	A set of TInteractiveGestureFlag options describing the state of the interactive gesture. Flags is only valid if the gesture is interactive.
Angle	The angle in which either the finger or a gesturing device has moved relative to the screen coordinates.
Distance	The distance in pixels from the current point, given by Location, and the previous point.
InertiaVector	The inertia speed given by an X and Y pair. A positive X value means an inertia to the right of the screen, while a negative one means an inertia to the left. A positive Y value means an inertia to the bottom of the screen, while a negative one means an inertia to the top. InertiaVector is only valid if the event is interactive.
TapLocation	Specifies the coordinates of the "tap" and "press and tap" gestures.

See Also

• PGestureEventInfo

• TCMGesture

Code Examples

• OnGesture (Delphi)
• OnGesture (C++)