How to Return the Pixel Dimensions and Depth of a Bitmap

Keywords:  bitmap dimensions

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Question:

Do you know of a way to return the pixel dimensions and depth (no. of colors) of a .BMP file? I realize that this is a long shot, but what the heck, thought I'd ask anyway. Thanks.

Answer:

	bmp="c:\incoming\studio16.bmp"
	bmpsize=FileSize(bmp)
	bb=BinaryAlloc(bmpsize)
	BinaryRead(bb,bmp)
	height=BinaryPeek4(bb,18)
	width=BinaryPeek4(bb,22)
	BinaryFree(bb)
	Message(bmp,"%height% x %width%")

By the way, color depth is at the 28th byte (1C hexadecimal):

	bits = BinaryPeek2(bb,28)

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Article ID:   W12745

Filename:   How to Return Bitmap Dimensions.txt