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Is there any way to make Emacs partially transparent in kde4? I tried some of the solutions proposed online, but none of them had any effect at all; I suspect it might be an issue with kde, but I am not actually sure.

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Have you tried setting the application-specific KWin settings for Emacs? If you right-click the title-bar of Emacs, and select Advanced->Special Application Settings, you should get app-specific settings which will be used whenever Emacs opens. I selected "Active Opacity %" in the "Preferences" tab, set it to 75, and selected "Force" in the drop-down. Emacs now comes up with 75% opacity whenever it launches.

Note: I'm using KDE 4.4.

Edit: Just for reference: a brief search for Emacs + transparency came up with this. I didn't have any luck with Emacs' settings either.

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That works--I didn't even think of doing it that way. – Tikhon Jelvis Sep 22 '10 at 22:23
That said, a way of doing it from emacs so that I can control it through emacs would be nicer, but beggars can't be choosers. – Tikhon Jelvis Sep 22 '10 at 22:24
@Tikhon, agreed, but I wonder how much control Emacs may assert over the actual window itself. I would expect that to be solely under the control of KDE, though I may be wrong :^) – bedwyr Sep 23 '10 at 2:34

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