Okay, found this in the archives: http://tech.groups.yahoo.com/group/flexcoders/message/48653
So, I tried out the function at the end of the thread. Seems the one thing I was doing wrong (?) was this: I called this.getObjectsUnderPoint(point); where this was a Sprite at the root of my UIComponent. Everything works correctly if I instead call this.stage.getObjectsUnderPoint(point). That... well, doesn't make sense. Anyone care to clarify? Troy. --- In flexcoders@yahoogroups.com, "thirtyfivemph" <[EMAIL PROTECTED]> wrote: > > Okay, this is really driving me crazy... > > I've got a UIComponent which is nested several layers deep in a > layout. Inside that UIComponent I've got a series of sprites that are > nested one inside of the other 4 or 5 levels deep with a Bitmap nested > as the deepest level. > > In the top-level sprite of my UIComponent (child of the UIComponent) > I'm intercepting mouse clicks (sprite.mouseChildren = false) and > trying to determine what underlying sprite was clicked on (think the > SpriteArranger example). > > Easy, right? Just take the stageX and stageY coordinates from the > mouse down event, pass them to getObjectsUnderPoint, and voila, a list > of objects (sprites, bitmaps, etc.) underneath that point on the stage. > > But its not working for me... a few weird issues are popping up: > > First, 99% the only object that is in the returned list is the > top-level sprite of my component. What's weird is its the > DisplayObjectContainer I'm calling getObjectsUnderPoint on, so I > wouldn't expect it to be included in the list (because the docs say > "children, grandchildren, etc."). > > Second, the 1% of the time it finds something else its the deepest > child, the Bitmap, which is the only other object with art, so that's > too be expected. But it only finds the object if I click on the top > edge of the bitmap. E.g., if I click at (20, 120) it finds the bitmap, > but if I click at (20, 121) or (20, 119) it doesn't find the bitmap, > even though its 100x100 (its fairly big on the screen, I can tell when > I'm clicking inside of it!). > > And I check the hitArea... NULL on all my DisplayObjects, so they > should be running off of the visual areas... > > Third, the getPointsUnderObject seems to be offset... the docs say to > use stage coordinates, so I use the stageX and stageY from the mouse > event. But, no objects are returned when I reach the edge of my > UIComponent due to what appears to be some offset due to the fact that > the UIComponent is centered... > > ARrrgh! > > This seems so basic? Are there gotchas I'm not aware of when dealing > with getObjectsUnderPoint? I can find very few examples of this being > used and the ones I can find seem to agree with what I'm doing! > > Help! Please help! :) > > Troy. >
