jcocon@hubcap.clemson.edu (james c oconnor) (04/04/91)
I would like to be able to check to see if a field by a particular name exists. Is this possible, or should I write an xcmd? Jim
sahara@sran192.sra.co.jp (Shin Sahara) (04/07/91)
In article <1991Apr3.192733.28490@hubcap.clemson.edu> jcocon@hubcap.clemson.edu (james c oconnor) writes: >I would like to be able to check to see if a field by a particular >name exists. Is this possible, or should I write an xcmd? You can test for the existence of something by "there is" operators. The forms are: there is a{n} <thing> there is not a{n} <thing> there is no <thing> <thing> := <window> | <menu> | <menuItem> | <file> | <button> | <field> | <card> | <background> | <stack> So you can say: if there is not a field "money" then makeMoney 103kg
leue@galen.crd.ge.com (Bill Leue) (04/08/91)
In article <1991Apr3.192733.28490@hubcap.clemson.edu> jcocon@hubcap.clemson.edu (james c oconnor) writes: >I would like to be able to check to see if a field by a particular >name exists. Is this possible, or should I write an xcmd? > >Jim I asked a similar question a couple of weeks ago and got lots of good replies, so here's my chance to pay back my debt. HC 2.0 (not earlier versions!) have a "there is" operator which will do what you want. An example for detecting a field on the current card: if there is a card field "Foo" then... You can easily extend this to detecting a field in the entire stack, or any object (button, window, etc) using standard looping techniques. -Bill Leue leue@crd.ge.com