I have somehow hit a shortcut in Altium that causes all of the layers that I am not currently working on to become grey. I can change layers and they are still there. How do I turn this off? It is not "mask level" of layers feature too. I am in footprint editor if that helps.
3 Answers
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You are probably in single layer mode. Shift-S toggles it on/off.
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1\$\begingroup\$ It's a very useful mode, btw. \$\endgroup\$ Commented Dec 2, 2016 at 19:19
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I had a similar problem, but that was due to the board being dimmed down. Was fixed by clicking "Mask Level" and then increasing "Masked Objects Factor" in the box "Dim Control".
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For me, I had to click on the Clear button in the bottom far right corner of Altium Designer, next to the Snap and Mask Level buttons.
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1\$\begingroup\$ Note: The hotkey for this might be Shift+C. \$\endgroup\$ Commented Oct 7, 2023 at 18:22