Hi all,<br><br>I have been thinking of how to use cocoa in a pd external and I could use some advice.  It has to be in Objective-C of course, and I see that gridflow uses cocoa a little (format/quartz.m). Still, I am not understanding how to combine the elements of a pd external (in C) with that of what I am finding in cocoa example applications (in objective-c).  Will I just write the entire external in objective-c, or is there some specific way to use obj-c syntax within a C source file?  Any tips or directs are thankfully welcomed.<br>
<br>regards,<br>rich <br>