Making black pixels transparent
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I have two images and they have the same size. Now I need to remove pixels in Image 1 which is color black in btmp
for (int c = 0; c < selFrame.Width; c++)
for (int j = 0; j < selFrame.Height; j++)
{
var pixel = selFrame.GetPixel(c, j);
var pixel2 = btmp.GetPixel(c, j);
if (pixel2.Equals(Color.Black) || pixel2.IsEmpty)
{
MessageBox.Show("qwe");
selFrame.SetPixel(c, j, Color.Transparent);
}
}
MessageBox doesn't show, so that means that it didn't go through the If condition.
Here is the btmp
Rob
Because [255,0,0,0] does not equal Color.Black.
From the documentation:
For example, Black and FromArgb(0,0,0) are not considered equal, since Black is a named color and FromArgb(0,0,0) is not.
As per the advice at the above documentation, change your check to be :
if (pixel2.ToArgb() == Color.Black.ToArgb() || pixel2.IsEmpty)
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