Compression (Preview Control/ Custom Property)

This property refers to the compression format of the preview image.

Property Value

The compression format.

Explanation

The Compression property refers to the compression format of the preview image.

This property is updated when the GetStreamFormat, GetStreamFormats, Open, SetStreamFormat, or ShowCapturePinDialog methods are executed.

When the image is uncompressed, the value of the Compression property will be 0(BI_RGB) or 3(BI_BITFIELDS). For details about what the values in these parentheses, please refer to Windows API from which these values were taken and have the same meaning. For compressed images, the value set in the Compression property will be values according to FOURCC code.

Setting this value

This value cannot be set

Retrieving this value

This value can be retrieved at run-time.