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SDL_GetDisplayContentScale

sdl_sys_bindgen

Function SDL_GetDisplayContentScale 

Source 
pub unsafe extern "C" fn SDL_GetDisplayContentScale(
    displayID: SDL_DisplayID,
) -> f32
Expand description

Get the content scale of a display.

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.

After window creation, SDL_GetWindowDisplayScale() should be used to query the content scale factor for individual windows instead of querying the display for a window and calling this function, as the per-window content scale factor may differ from the base value of the display it is on, particularly on high-DPI and/or multi-monitor desktop configurations.

Parameter: displayID the instance ID of the display to query. Returns: the content scale of the display, or 0.0f on failure; call SDL_GetError() for more information.

Thread Safety: This function should only be called on the main thread.

Available Since: This function is available since SDL 3.2.0.

See Also: SDL_GetWindowDisplayScale See Also: SDL_GetDisplays