# Help!! Need to use penMod options with OSX

**URL:** <https://psychtoolbox.discourse.group/t/help-need-to-use-penmod-options-with-osx/920>\
**Category:** Uncategorized\
**Created:** [January 21, 2005, 8:15pm UTC](https://psychtoolbox.discourse.group/t/help-need-to-use-penmod-options-with-osx/920 "2005-01-21T20:15:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Allen\_Ingling](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@Allen\_Ingling](https://psychtoolbox.discourse.group/u/Allen_Ingling)\
**Post date:** [January 21, 2005, 8:15pm UTC](https://psychtoolbox.discourse.group/t/help-need-to-use-penmod-options-with-osx/920/1 "2005-01-21T20:15:22Z")

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Hi all,  
  
In the experiment I'm designing, I need to draw some dashed and dotted lines. I see that   
there is a penMod option for some of the commands, but it seems to be ignored. How do I   
change the pen style within Psychtoolbox?  
  
Thanks in advance,  
Paige  
[pscalf@...](mailto:pscalf@...)

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<div class="post-metadata">

**Author:** ![ingling7](https://avatars.discourse-cdn.com/v4/letter/i/e79b87/32.png) [@ingling7](https://psychtoolbox.discourse.group/u/ingling7)\
**Post date:** [February 5, 2005, 4:37am UTC](https://psychtoolbox.discourse.group/t/help-need-to-use-penmod-options-with-osx/920/2 "2005-02-05T04:37:32Z")

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Dear Paige,  
  
We don't provide a way to do that now, but I'll add support for   
glLineStipple in the next OS X Psychtoolbox release.  
  
best,  
  
Allen  
  
  

> On Jan 21, 2005, at 3:15 PM, p\_scalf wrote:  
>    
> \>  
> \>  
> \> Hi all,  
> \>  
> \> In the experiment I'm designing, I need to draw some dashed and dotted   
> \> lines. I see that  
> \> there is a penMod option for some of the commands, but it seems to be   
> \> ignored. How do I  
> \> change the pen style within Psychtoolbox?  
> \>  
> \> Thanks in advance,  
> \> Paige  
> \> [pscalf@...](mailto:pscalf@...)  
> \>  
> \>  
> \>  
> \>  
> \>  
> \> Post your message to: [psychtoolbox@yahoogroups.com](mailto:psychtoolbox@yahoogroups.com)  
> \> Please indicate OS9, OSX, or WIN version, and include your full name.  
> \> Denis Pelli, David Brainard, and Allen Ingling.  
> \> [http://psychtoolbox.org](http://psychtoolbox.org)  
> \>  
> \> Yahoo! Groups Links  
> \>  
> \>  
> \>  
> \>  
> \>  
> \>  
> \>