Vcl.Controls.TGestureEventInfo

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Delphi

TGestureEventInfo = record

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

Code Examples