Thanks, I’ll try it. pb
On Jul 10, 2014, at 7:01 PM, Jim Hurley <[email protected]> wrote: >> >> Message: 19 >> Date: Thu, 10 Jul 2014 17:24:16 -0700 >> From: Peter Bogdanoff <[email protected]> >> To: How to use LiveCode <[email protected]> >> Subject: Dragging an object >> Message-ID: <[email protected]> >> Content-Type: text/plain; charset=windows-1252 >> >> Hi, >> >> I want to drag an object around (a group), restricting its Y coordinate (set >> to be a property, ?yLocation"). I?m using this script inside the object: >> >> on mouseMove >> if the mouse is down then >> set the loc of me to (item 1 of the mouseLoc,the yLocation of me) >> end if >> end mouseMove >> >> However, after moving it sideways, when I click on it again to move it, >> every time it jumps back so that its X coordinate is zero relative to the >> mouseLoc. >> >> This behavior would be fine for a button, but I?m dragging a 3000-pixel-wide >> group. >> >> How can I drag it by clicking on one side of this group? >> >> I tried using the grab command, but I couldn?t seem to be able to restrict >> the Y coordinate with that. >> >> Peter >> UCLA > > Hi Peter, > > Greetings from UCD (retired). > > The mouseMove needs to recognize the initial separation between the mouse at > mouseDown the x loc of the object being moved at mouseDown. I call that > distance dx. > The following will move the button along the initial y coordinate of the > button and the x loc of the mouse plus the initial separation dx > > local y0 ,myName, dx > > on mouseDown > put the short name of me into myName > put the loc of me into p0 > put item 2 of p0 into y0 > put the mouseloc into p1 > put item 1 of p1 into x1 > put item 1 of p0 into x0 > put x0 - x1 into dx --The distance between the button loc and the mouse loc > end mouseDown > > on mouseMove x,y > if myName is not empty then > set the loc of me to x+ dx,y0 > end if > end mouseMove > > on mouseUp > put empty into myName > end mouseUp > > on mouseEnter > put "" into myname > end mouseEnter > > > _______________________________________________ > use-livecode mailing list > [email protected] > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list [email protected] Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
