Is the image set with the IsBackgroundImage="true" property?
If you are using Icon for the button please follow this online demo, in which is mentioned the different properties for positioning the icon image. If this is the case and you are still troubled with the positioning get back to me for additional help.
Could you verify that you are trying to get the Image position or the Cursor's position on click?
Additionally you could follow this online demo, which is demonstrating handling of images in the buttons.
I am looking forward for your reply.
Regards,
Ianko
Telerik
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