Bitmap.getpixel() Question

[mBrannam]

I have a bitmap named bmp that is 256x256 and contains all white pixels that were assigned by

bmp.setpixel(x,y,color.white)

When I try to use a comparison to determine the color using:

if bmp.getpixel(x,y) = color.white then
   label1.text = "success"
end if

, it never works properly.

However, if I use

if bmp.getpixel(x,y).R = 255 then
   label1.text = "success"
end if

to get any pixel with a Red value of 255 (white included), the comparison succeeds.

What am I doing wrong with the first example?

I would like to get the first example working because the if statements get very long when I have to type

if bmp.getpixel(x,y).R = 255 and bmp.getpixel(x,y).B = 0 and bmp.getpixel(x,y).G = 0 then
   label1.text = success
end if

to search for red.

Any help would be appreciated.

 

[JohnH]

This help topic explains why you don't get the result you expect: Color.Equals Method (System.Drawing)
As suggested do comparison on their Argb values (x.ToArgb=y.ToArgb).

 

[mBrannam]

Thank you for your quick reply, John. It solved my problem completely.