xlib and keyboard events Post: 302721459

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Top Forums UNIX for Advanced & Expert Users xlib and keyboard events Post 302721459 by N7DR on Thursday 25th of October 2012 12:15:56 PM

10-25-2012

Registered User

After a lot more experimentation, I discovered that the trick is to use:

Code:

XGrabKey(<Display*>, AnyKey, AnyModifier, <window>, false, GrabModeAsync, GrabModeAsync);

So far, that seems to do exactly what I needed.

I do wish, though, that I had been able to find an xlib reflector or some similar resource. I felt like I was spending an awful of time flailing around just trying stuff, and a few words from an xlib expert could have pointed me in the right direction without my having to go through all that pain. The xlib documentation is pretty good, but even so there are plenty of ambiguities in the language, so much of the time I had to resort to trying combinations of plausible functions until I hit the one that worked.

DGPickett: I think you misunderstand my issue, although I tried to make it as clear as I could. If I understand you correctly, you seem to be saying that I shouldn't be involved in X at all, and in particular not an xterm. But the entire context of the problem is within an xterm, so I think that X has to be involved in the solution.

N7DR

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rendercheck

rendercheck(1)						      General Commands Manual						    rendercheck(1)

NAME

       rendercheck - simple tests of the X Render extension.

SYNOPSIS

       rendercheck [-d|--display display] [-i|--iter] [--sync] [-t|--tests test1,test2,test3,...] [-o|--ops op1,op2,op3,...]
       [-v|--verbose] [--minimalrendering]

DESCRIPTION

       rendercheck is a set of simple tests of the X Render extension.	It is designed for authors of Render implementations in X Servers.

OPTIONS

       -d|--display display
	      Specifies the display to test against.

       -i|--iter iterations
	      Specifies  the number of times to repeat each operation before sampling results.	Some X Servers may behave differently (hardware vs
	      software rendering paths) depending on the previous operations done, so this may be used to influence the server's choices.

       --sync Enables synchronous xlib operation, for debugging.

       -t|--tests test1,test2,test3...
	      Enables only a specific subset of the possible tests.  Test names include  fill,	dcoords,  scoords,  mcoords,  tscoords,  tmcoords,
	      blend, composite, cacomposite, gradients, repeat, triangles, and bug7366.  Names must be separated by commas and have no spaces.

       -f|--formats format1,format2,format3...
	      Enables  only  a	specific  subset  of the possible formats.  Only formats listed in the server-supported format list are available.
	      Names must be separated by commas and have no spaces.

       -o|--ops
	      Enables only a specific subset of the Render operators.

       -v|--verbose
	      Enables verbose printing of information on tests run, and successes and failures.

       --minimalrendering
	      Disables copying of offscreen destinations to the window, which is on by default to provide the user with visual feedback.

BUGS

       Several	limitations  are  documented  in  the  TODO  file  accompanying  the  source.	Please	report	any  further  bugs  you  find	to
       http://bugs.freedesktop.org/.

AUTHORS

       Eric Anholt, with help from Keith Packard.

																    rendercheck(1)