Thanks to the person who answered yesterday, but I am no closer to a solution. I have an NSTableView, and it contains NSTextAttachmentCell rows. There's only one column in the table view. Basically, when a user clicks on a row, I am getting the shouldSelectRow event, which gives me a row index. I need to know if the user clicked on the icon which is in the first 16 pixels of the row. To do this, I want to either find out the mouse position in general then normalise it to the control, or I want to capture mouse movement ( without any clicks ) and record it as I go, so I know when I click, what part of the cell was clicked on. I have found there's an event on a cell that would tell me the mouse position on a click, but I can't work out how to get the event, do I need to subclass NSTextAttachment and NSTextAttachmentCell to make my cell a new type that also tracks the mouse ? I get that impression from my reading, but surely I can just subscribe to an event ? If I could just ask for the mouse position on screen, and normalise it to my table view, that would solve all my issues. Thanks
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