// d3dkmdt.h
typedef enum _DISPLAYID_DETAILED_TIMING_TYPE_I_ASPECT_RATIO {
DIDDT1_AspectRatio_1x1,
DIDDT1_AspectRatio_5x4,
DIDDT1_AspectRatio_4x3,
DIDDT1_AspectRatio_15x9,
DIDDT1_AspectRatio_16x9,
DIDDT1_AspectRatio_16x10
} ;
View the official Windows Driver Kit DDI referenceNo description available.
The DISPLAYID_DETAILED_TIMING_TYPE_I_ASPECT_RATIO enumeration indicates the display device's aspect ratio, defined as width by height (width x height).
DIDDT1_AspectRatio_1x1Indicates a 1 x 1 aspect ratio.
DIDDT1_AspectRatio_5x4Indicates a 5 x 4 aspect ratio.
DIDDT1_AspectRatio_4x3Indicates a 4 x 3 aspect ratio.
DIDDT1_AspectRatio_15x9Indicates a 15 x 9 aspect ratio.
DIDDT1_AspectRatio_16x9Indicates a 16 x 9 aspect ratio.
DIDDT1_AspectRatio_16x10Indicates a 16 x 10 aspect ratio.