Bitmap to int[] using Marshal.Copy()

Question

I\'m using Marshal.Copy() to copy the pixel information from a Bitmap to an int[] array, the problem resides in the fact that the info

Answer 1

Those values are perfectly normal. They are 32bpp pixels with the alpha channel at 0xff, the usual value. In other words: -8682109 == 0xff7b8583. Any alpha value >= 128 will make the value negative because it sets the sign bit.

Using uint[] instead of int[] can make that easier to see.

Answer 2

IMHO, your bytecount is a number of byte's and now you're dividing bytes by 4 and expecting a set of integers, that are really bytes. The cast is not performed as you want it.

To convert a byte array to int array use:

System.BitConverter.ToInt32(mybyteArray,4);