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I need to convert a picture to 32bpp, or ARGB, in visual basic. That is, I need to add an alpha channel to a picture that doesn't have one. This is my attempt:
   Dim a = New Bitmap( _
    My.Application.Info.DirectoryPath & "\ping.png")
            Dim b As New Bitmap(a.Width, a.Height)
            Dim g As Graphics = Graphics.FromImage(b)
            g.DrawImage(a, 0, 0)
            PictureBox1.Image = b
            g.Dispose()
This resizes the image somehow - makes it bigger but then crops it to the original's size.
Posted 14-Jan-13 2:28am
Edited 14-Jan-13 4:57am
v2

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Solution 1

I wish, following link will help you to find out your answer;
http://code.msdn.microsoft.com/windowsdesktop/Image-Conversion-in-VBNET-88a4da26[^]
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