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

SDL_GetDisplayContentScale

Get the content scale of a display.

Header File

Syntax

float SDL_GetDisplayContentScale(SDL_DisplayID displayID);

Function Parameters

SDL_DisplayID

displayID

the instance ID of the display to query.

Return Value

(float) Returns the content scale of the display, or 0.0f on failure; call SDL_GetError() for more information.

Remarks

The content scale is the expected scale for content based on the DPI settings of the display. For example, a 4K display might have a 2.0 (200%) display scale, which means that the user expects UI elements to be twice as big on this display, to aid in readability.

Version

This function is available since SDL 3.1.3.