(This is the documentation for SDL3, which is the current stable version. SDL2 was the previous version!)

SDL_SetJoystickVirtualTouchpad

Set touchpad finger state on an opened virtual joystick.

Header File

Defined in <SDL3/SDL_joystick.h>

Syntax

bool SDL_SetJoystickVirtualTouchpad(SDL_Joystick *joystick, int touchpad, int finger, bool down, float x, float y, float pressure);

Function Parameters

SDL_Joystick *	joystick	the virtual joystick on which to set state.
int	touchpad	the index of the touchpad on the virtual joystick to update.
int	finger	the index of the finger on the touchpad to set.
bool	down	true if the finger is pressed, false if the finger is released.
float	x	the x coordinate of the finger on the touchpad, normalized 0 to 1, with the origin in the upper left.
float	y	the y coordinate of the finger on the touchpad, normalized 0 to 1, with the origin in the upper left.
float	pressure	the pressure of the finger.

Return Value

(bool) Returns true on success or false on failure; call SDL_GetError() for more information.

Remarks

Please note that values set here will not be applied until the next call to SDL_UpdateJoysticks, which can either be called directly, or can be called indirectly through various other SDL APIs, including, but not limited to the following: SDL_PollEvent, SDL_PumpEvents, SDL_WaitEventTimeout, SDL_WaitEvent.

Version

This function is available since SDL 3.1.3.

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CategoryAPI, CategoryAPIFunction, CategoryJoystick

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