Man page - sdl_getwindowdisplayscale(3)

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Manual

SDL_GetWindowDisplayScale

NAME
HEADER FILE
SYNOPSIS
DESCRIPTION
FUNCTION PARAMETERS
RETURN VALUE
THREAD SAFETY
AVAILABILITY

NAME

SDL_GetWindowDisplayScale - Get the content display scale relative to a window’s pixel size.

HEADER FILE

Defined in SDL3/SDL_video.h

SYNOPSIS

#include "SDL3/SDL.h"

float SDL_GetWindowDisplayScale(SDL_Window *window);

DESCRIPTION

This is a combination of the window pixel density and the display content scale, and is the expected scale for displaying content in this window. For example, if a 3840x2160 window had a display scale of 2.0, the user expects the content to take twice as many pixels and be the same physical size as if it were being displayed in a 1920x1080 window with a display scale of 1.0.

Conceptually this value corresponds to the scale display setting, and is updated when that setting is changed, or the window moves to a display with a different scale setting.

FUNCTION PARAMETERS

window

the window to query.

RETURN VALUE

Returns the display scale, or 0.0f on failure; call

SDL_GetError () for more information.

THREAD SAFETY

This function should only be called on the main thread.

AVAILABILITY

This function is available since SDL 3.2.0.