callback facility is available on all platforms. I think it is the dll lab that is windows specific.
On Tue, Feb 25, 2020, 8:29 AM Raul Miller <[email protected]> wrote: > That lab mechanism (basically, one statement at a time, with > decoration removed for comments and text blocks) looks neat. It still > takes time to write a lab, but this seems quite straightforward. > > That said, I'm wondering about the lab titled: "Shared Library (d) > (windows only) - callback". > > For example, if I do a site search of opensource.apple.com for > "callback" I see a good variety of examples, and I imagine some of > those might make good lab candidates. > > But when I look at > https://github.com/jsoftware/jsource/blob/master/jsrc/x15.c I see that > CALLBACK is only defined for windows.... > > But other lines which use CALLBACK seem to be used unconditionally > (have I overlooked something?). > > ... > > Anyways, I'm not sure if this is meant to work on non-windows > platforms, but I can't even figure out what issue it is that is making > it so hard for me to read this part of the code. (I've noticed things > like the definition of CALLBACK at > > https://opensource.apple.com/source/X11server/X11server-48.1/xorg-server-1.3.0-apple5/Xext/security.c > but that seems oddly specific, and probably not the definition used > when compiling J... but maybe there's a standard definition somewhere > that is being pulled in??) > > Are callbacks expected to work on non-windows platforms, and we just > don't have examples? Or is there some subtlety here which prevents > them from working? > > Thanks, > > -- > Raul > > On Mon, Feb 24, 2020 at 9:27 AM Eric Iverson <[email protected]> > wrote: > > > > Updated labs addon with new and improved labs for cd (DLL call) is > > available. > > > > It should now be easier to get comfortable with shared libraries. > > > > There are 5 shared library labs in category system. > > > > Jqt: Help>Studio>Labs Category:System > > JHS: tour>labs lablist_jijx_ 'system' > > > > *** > > These labs (e.g. ~addons/labs/labs/system/dllbasic.ijt) are written as > > 'normal' scripts. They do not have the complicated structure required by > > earlier labs. This style of lab is much easier to create. Take a look at > > the script and then see how it runs as a lab (or under spx managed > > execution). > > > > Perhaps it is time to write your own lab and contribute it to the > community. > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
