---
name: "SDL_SetJoystickVirtualTouchpad"
section: "3"
platform: "linux"
package: "libsdl3-doc"
version: "3.2.10+ds-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SDL_SetJoystickVirtualTouchpad"
---

# SDL\_SetJoystickVirtualTouchpad(3)

Set touchpad finger state on an opened virtual joystick.

## NAME

SDL\_SetJoystickVirtualTouchpad - Set touchpad finger state on an opened virtual joystick.

## HEADER FILE

Defined in SDL3/SDL\_joystick.h

## SYNOPSIS

```
#include "SDL3/SDL.h"
```

**bool SDL\_SetJoystickVirtualTouchpad(SDL\_Joystick \*joystick, int touchpad, int finger, bool down, float x, float y, float pressure);**

## DESCRIPTION

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** .

## FUNCTION PARAMETERS

- *joystick*

  the virtual joystick on which to set state.

- *touchpad*

  the index of the touchpad on the virtual joystick to update.

- *finger*

  the index of the finger on the touchpad to set.

- *down*

  true if the finger is pressed, false if the finger is released.

- *x*

  the x coordinate of the finger on the touchpad, normalized 0 to 1, with the origin in the upper left.

- *y*

  the y coordinate of the finger on the touchpad, normalized 0 to 1, with the origin in the upper left.

- *pressure*

  the pressure of the finger.

## RETURN VALUE

Returns true on success or false on failure; call

**SDL\_GetError** () for more information.

## AVAILABILITY

This function is available since SDL 3.2.0.