Inversion of transparency

Is there an easy way to invert the transparency of a layer - that is, lock the content so that only the transparent areas can be painted? This seems much more useful to me than the preserve transparency function.

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  • Possibly, but I am not sure of the steps...What I tend to do (which I_think_provides the same result) is this alternate approach:

    1. Ctrl/Cmd+Click on the layer thumbnail in the Layers panel to select layer content

    2. Ctrl/Cmd+I to invert the selection

    3. Paint will be in the transparent areas of the layer

    Not sure if that helps but I thought I'd share...