Thanks for the reply. I got to the point where I could test for individual letter keys, but I'm still having trouble with the arrows. If I try to test for the characters that correspond to the arrow keys, like ┤:
test_pic_char =: 3 : 0 if. sysdata = '┤' do. wd 'setxywh pic 0 0 150 150' end. ) I get a 'length error' when the program runs. Any ideas? On 6/3/07, Chris Burke <[EMAIL PROTECTED]> wrote:
Jimmy Miller wrote: > I've been trying to get an isigraph to move to a certain location when > the user presses the up arrow key. I figured out how to get it to > move based on any key: > > test_pic_char =: 3 : 0 > wd 'setxywh pic 0 0 150 150' > ) > > But I'm unsure how to detect the up key. Based on the isigraph events > page (http://www.jsoftware.com/help/user/isigraph_events.htm), I > figured sysdata would be 21 when the user presses the up key: The datatype of sysdata is always character. The numbers shown are the indices of the character values in a. (alphabet). You can just press a key, observe the value of sysdata, and then program for that value. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
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