QPx_GetPictureInfo

QPx_GetPictureInfo(pictVar; pictWidth; pictHeight; pixelDepth; hRes; vRes):error
	pictVar	Picture	Picture variable
	pictWidth	Longint	Image width in pixels
	pictHeight	Longint	Image height in pixels
	pixelDepth	Longint	Image depth
	hRes	Longint	Horizontal image resolution in dots per inch (dpi)
	vRes	Longint	Vertical image resolution in dots per inch (dpi)
	error	Longint	Error result

Returns the properties of a 4D picture variable.

The source picture is passed in the pictVar parameter.

Image dimensions are returned in pictWidth and pictHeight, horizontal and vertical resolution in hRes and vRes and pixel depth in pixelDepth. Possible values for pixelDepth are:

qpx_BlackAndWhite	1	Black and white
qpx_FourColors	2	Four colors
qpx_SixteenColors	4	Sixteen colors
qpx_TwoHundredFiftySixColors	8	256 colors
qpx_ThousandsColors	16	Thousands of colors
qpx_MillionColors	24	Million of colors
qpx_MillionColorsPlusAlpha	32	Million of colors plus alpha
qpx_FourGrays	34	Four grays
qpx_SixteenGrays	36	Sixteen grays
qpx_TwoHundredFiftySixGrays	40	256 grays

Example

`Get picture info

C_LONGINT($error)
C_PICTURE($picture)
C_LONGINT($width;$height;$depth;$hRes;$vRes)

$picture:=[Images]Picture

$error:=QPx_GetPictureInfo ($picture;$width;$height;$depth;$hRes;$vRes)

If ($error=qpx_noErr)
`Work with picture info
End if

Related commands

QPx_GetCompressedPictureInfo

Returns information about a QuickTime-compressed picture