Dan - what's "bind" do? I don't have this defined. Regards,
Devon On Mon, Dec 15, 2008 at 6:20 PM, Dan Bron <[email protected]> wrote: > Roelof wrote: > > I tried the above and I have the same problem as before > > Yes, I too get a blank image & file. I don't get the freeze though. Sorry > for not testing my suggestion before I made it. > > I wonder why 9!:27'theSentence' is different from executing theSentence > directly in the IJX window. My suspicion is that control doesn't pass > back from the J engine (j.dll) to the JFE (j.exe) until after the immex > phrase has completed. > > That is, in the situation where you enter a phrase in the IJX window, press > enter, then enter another phrase, then enter again, from the first enter > to the second, control has passed from j.dll to j.exe and back to j.dll. > I speculate that in the case of 9!:27 j.dll checks the immex flag before > it returns control to j.exe (executing a phrase if appropriate), and so > this round trip is avoided. However, in Roelof's case, the transfer of > control is required, as j.exe has the responsiblity of painting graphics. > > Which makes me think his aims might be acheived via a different > indirection: > > vm =: verb define > viewmat i. 16 16 > wd 'timer 500' > sys_timer_z_ =: 'timer 0' wd@:[ savemat_jviewmat_ bind > 'C:\immex0.bmp' > ) > > vm'' > > This works, which seems like corroboration of my hypothesis (j.exe owns wd, > and hence control must pass back to it before timer events can fire, so we > get the requisite round trip). > > -Dan > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Devon McCormick, CFA ^me^ at acm. org is my preferred e-mail ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
