(This is the legacy documentation for stable SDL2, the current stable version; SDL3 is the current development version.)

Draft

THIS PAGE IS A WORK IN PROGRESS ... Please make edits to this page to improve it!

SDL_DollarGestureEvent

Dollar Gesture Event (event.dgesture.*)

Header File

Defined in [SDL_events.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_events.h), but apps should _only_ `#include "SDL.h"`!

Syntax

typedef struct SDL_DollarGestureEvent
{
    Uint32 type;        /**< ::SDL_DOLLARGESTURE or ::SDL_DOLLARRECORD */
    Uint32 timestamp;   /**< In milliseconds, populated using SDL_GetTicks() */
    SDL_TouchID touchId; /**< The touch device id */
    SDL_GestureID gestureId;
    Uint32 numFingers;
    float error;
    float x;            /**< Normalized center of gesture */
    float y;            /**< Normalized center of gesture */
} SDL_DollarGestureEvent;

Data Fields

Uint32	type	SDL_DOLLARGESTURE or SDL_DOLLARRECORD
Uint32	timestamp	timestamp of the event
SDL_TouchID	touchId	the touch device id
SDL_GestureID	gestureId	the unique id of the closest gesture to the performed stroke
Uint32	numFingers	the number of fingers used to draw the stroke
float	error	the difference between the gesture template and the actual performed gesture (lower error is a better match)
float	x	the normalized center of gesture
float	y	the normalized center of gesture

Related Enumerations

SDL_EventType

Related Structures

SDL_Event

SDL_MultiGestureEvent

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CategoryAPI, CategoryAPIStruct, CategoryStruct, CategoryEvents, CategoryDraft

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