QMed_GetImageInfo

QMed_GetImageInfo(imageRef; imageWidth; imageHeight; imageDepth; pixelType):error
	imageRef	Longint	Reference to the image
	imageWidth	Longint	Image width
	imageHeight	Longint	Image height
	imageDepth	Longint	Image depth
	pixelType	String4	Pixel type
	error	Longint	Error result

Returns information about the current frame of an image. If the specified image contains multiple frames, the returned information pertains to the current frame.

The image is specified by imageRef. If imageRef is not a valid image, error qmed_paramErr is returned.

Parameters imageWidth and imageHeight receive the image width and height in pixels.

Parameter imageDepth receives the image depth. For images with RGB pixels, imageDepth can take the following values:

Black and white images 1

Color images 2, 8, 16, 24, 32

Grayscale images 34 (2 bit), 36 (4-bit), 40 (8-bit)

For images with special pixel types, imageDepth receives the bit-per-pixel of the image.

Parameter pixelType receives the pixel type of the image. This is an empty string for RGB images, or a 4-character code identifying a special pixel type. For example, 16-bit grayscale pixels are identified by "b16g".

Example

`Get image characteristics

C_LONGINT($error)
C_LONGINT($width;$height)
C_LONGINT($depth)
C_STRING(4;$pixelType)

C_LONGINT(gImageRef)

$error:=QMed_GetImageInfo (gImageRef;$width;$height;$depth;$pixelType)

If ($error # qmed_noErr)
`Handle the error
End if