Mouse dragging events in NSWindow and NSView

Question

Mouse dragging events in NSWindow and NSView

Hi, I have built and application that uses a single window that contains multiple components within it. The main component of the window is a custom NSView subclass that contains a number of CALayers. I want to be able to move these layers around the NSView subclass based on the mouseDown, mouseDragged, and mouseUp events entered by the user. I can detect and process mouse events fine within the NSView subclass, however, whenever I drag the mouse within the NSView subclass right after a mouseDown event, the WHOLE WINDOW will move. I do not want that to happen, that is, when I am dragging the mouse within my NSView subclass, I do not want the whole window to move. I want my CALayers, within the NSView, to move according to the mouse events that I am correctly tracking in the NSView subclass. I will very much appreciate any suggestions. Thank you very much in advance.

iMac 2.8 GHz, Mac OS X (10.5.4)

Posted on Apr 18, 2009 11:09 PM

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Answer 1

Apr 22, 2009 7:26 PM in response to enrique.ibarra

Override - (BOOL)mouseDownCanMoveWindow and return NO.

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Answer 2

May 6, 2009 11:29 AM in response to Peter N Lewis

Thank you very much for your response. Your tip is very useful. What I did before was change the window type in Interface Builder: replace the textured window with a regular window. This solved the problem, however, I could not find the property that needed to be adusted to control the window behavior. I learned something useful with your tip. Thanks again.

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