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Full Discussion: Xlib: XKeysymToKeycode hangs
Top Forums UNIX for Advanced & Expert Users Xlib: XKeysymToKeycode hangs Post 302748663 by N7DR on Wednesday 26th of December 2012 01:47:18 PM
Old 12-26-2012
Quote:
Ok - this is C, you assert the _display_p variable is valid. You know this how?

Please post your code.
The pertinent class is called keyboard_queue.

In the class definition, there is:

Code:
  Display*                    _display_p;   // the X display pointer

The constructor provides a value for this in the initializer list:

Code:
  _display_p(XOpenDisplay(NULL)),

The value is tested inside the construstor, just in case the call to XOpenDisplay() failed:

Code:
 if (!_display_p)
  { cerr << "Fatal error: unable to open display" << endl;
    exit (-1);
  }

Then, inside a member function called push_key_press, occurs the line that hangs (I have temporarily, while testing, replaced the call to the variable ks of type KeySym with an explicit value, XK_g):

Code:
   const KeyCode kc = XKeysymToKeycode(_display_p, XK_g);

Following the initialisation of _display_p in the class constructor, the only place that _display_p is used is in direct calls to X functions: I never access it myself.

If I remove the line that hangs, and code that depends on it, then everything else -- in particular, all the calls to X functions, both prior to and subsequent to the offending line -- works as expected.
 

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Bio::TreeIO::svggraph(3pm)				User Contributed Perl Documentation				Bio::TreeIO::svggraph(3pm)

NAME
Bio::TreeIO::svggraph - A simple output format that converts a Tree object to an SVG output SYNOPSIS
use Bio::TreeIO; my $in = Bio::TreeIO->new(-file => 'input', -format => 'newick'); my $out = Bio::TreeIO->new(-file => '>output', -format => 'svggraph'); while( my $tree = $in->next_tree ) { my $svg_xml = $out->write_tree($tree); } DESCRIPTION
This outputs a tree as an SVG graphic using the SVG::Graph API FEEDBACK
Mailing Lists User feedback is an integral part of the evolution of this and other Bioperl modules. Send your comments and suggestions preferably to the Bioperl mailing list. Your participation is much appreciated. bioperl-l@bioperl.org - General discussion http://bioperl.org/wiki/Mailing_lists - About the mailing lists Support Please direct usage questions or support issues to the mailing list: bioperl-l@bioperl.org rather than to the module maintainer directly. Many experienced and reponsive experts will be able look at the problem and quickly address it. Please include a thorough description of the problem with code and data examples if at all possible. Reporting Bugs Report bugs to the Bioperl bug tracking system to help us keep track of the bugs and their resolution. Bug reports can be submitted via the web: https://redmine.open-bio.org/projects/bioperl/ AUTHOR - Brian OConnor Email brian.oconnor-at-excite.com CONTRIBUTORS
Allen Day Guillaume Rousse, Guillaume-dot-Rousse-at-inria-dot-fr APPENDIX
The rest of the documentation details each of the object methods. Internal methods are usually preceded with a _ new Title : new Usage : my $obj = Bio::TreeIO::svggraph->new(); Function: Builds a new Bio::TreeIO::svggraph object Returns : Bio::TreeIO::svggraph Args :-width => image width (default 1600) -height => image height (default 1000) -margin => margin (default 30) -stroke => stroke color (default 'black') -stroke_width=> stroke width (default 2) -font_size=> font size (default '10px') -nomalize => undef or 'log' (default is undef) write_tree Title : write_tree Usage : $treeio->write_tree($tree); Function: Write a tree out to data stream in newick/phylip format Returns : none Args : Bio::Tree::TreeI object decorateRoot Title : _decorateRoot Usage : internal methods Function: Example : Returns : Args : next_tree Title : next_tree Usage : Function: Sorry not possible with this format Returns : none Args : none perl v5.14.2 2012-03-02 Bio::TreeIO::svggraph(3pm)
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