Problem comparing 2 bitmaps

Question

Hi,

I have the code below on a timer( “b” is a bitmap )

If Not (Clipboard.GetImage Is Nothing) Then

            If Not (Clipboard.GetImage.Clone Is b) Then

                b = Clipboard.GetImage.Clone

                RaiseEvent NewClipboardImageEntry(b)

            End If

        End If

The problem is that it raises the event even if the picture didn’t change.

Any help on comparing the 2 images without actually comparing them pixel by pixel (too slow to do the job)?

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Muscalu Ștefan ~~~~ Student

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Answer 1

Of course, using LockBits (facepalm).

http://social.msdn.microsoft.com/forums/en-US/Vsexpressvb/thread/97600e8d-e346-4c85-8356-459b0778da0e/

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Muscalu Ștefan ~~~~ Student

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Answer 2

Hi Muscalu,

Thanks for your post.

I’m glad to hear that you found a good idea to resolve your question. Thanks for sharing your solutions and experience here, it will be very beneficial for other community members who have similar questions.

Have a nice day.

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Mark Liu-lxf [MSFT]
MSDN Community Support | Feedback to us