Returns the value for the specified property.
- macOS 10.0+
A string constant used as a key for an image property. These properties are described in Bitmap image properties.
A value specific to
nil if the property is not set for the bitmap.
Image properties can affect how an image is read in and saved to file. When retrieving the bitmap image properties defined in Bitmap image properties, be sure to check the return value of this method for a
nil value. If a particular value is not set for the image, this method may return