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Editorial Team
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Asked: 2026-05-15T08:58:32+00:00

The following line of code displays an image on my application window, within an

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The following line of code displays an image on my application window, within an NSImageView control named outputImageView. I used Interface Builder to put the NSImageView control onto the window, initially (then bound it to outputImageView). How do I change the size of the NSImageView control within my program, so that it matches the size of the actual image I am displaying (which may change, periodically)? And what if I wanted to change the anchor point for the image (i.e., centered, left edge, bottom right, or whatever? Thanks in advance!

[outputImageView setImage: outputImage];
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1 Answer

  1. Editorial Team

    Like any other NSView, use -setFrame::

    [outputImageView setFrame:NSMakeRect(x, y, w, h)]

    The coordinates are specified in the system of the containing view.

    If you need to change only the size (leaving the origin alone), you can use -setFrameSize::

    [outputImageView setFrameSize:NSMakeSize(w, h)]

    For alignment, use NSImageView’s -setImageAlignment:, as jshier wrote.

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