Get the content display scale relative to a window's pixel size.
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.
Get the content display scale relative to a window's pixel size.
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.