It's equivalent to writing "<something> != 0", although less readable. I have no idea if compilers actually generate better code for it, or people just do it because it's shorter to type.
On 16 June 2014 11:09, Ged Murphy <gedmurphy.mailli...@gmail.com> wrote: > Yes, the double negate is a little trick to give you either a 1 or a 0 > instead of the value of the operation. > > > -----Original Message----- > From: Ros-dev [mailto:ros-dev-boun...@reactos.org] On Behalf Of Pierre > Schweitzer > Sent: 16 June 2014 07:31 > To: ros-dev@reactos.org > Subject: Re: [ros-dev] [ros-diffs] [hbelusca] 63599: [TASKMGR]: Use the > EndTask API to kill tasks. > > On 15/06/2014 19:47, hbelu...@svn.reactos.org wrote: > > + /* Trick: on Windows, pressing the CTRL key forces the task to be > ended */ > > + BOOL ForceEndTask = !!(GetKeyState(VK_CONTROL) & 0x8000); > > + > > Was it really meant to be '!!'? > > -- > Pierre Schweitzer<pierre at reactos.org> System Administrator ReactOS > Foundation > > > > > _______________________________________________ > Ros-dev mailing list > Ros-dev@reactos.org > http://www.reactos.org/mailman/listinfo/ros-dev >
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