API: Deselecting from FM tree

Has anyone else dealt with this. I created a few programs that have
residual selections (meaning you select an item it is added to a list and
then you can select another with out holding CTRL, then you deselect by
clicking on any selected item, and it is removed from the list.) The
problem is that when deselecting a feature from the Tree it seems to raise
the Assm_SelectionChangeNotify event 2 times. This is causing my app to
loop and deselect everything. When deselecting from the graphics view
everything works as expected. I have been racking my brain trying to think
of some other way of deciding which item was deselected. I have been
using....

Set ThisComp =
SelMan.GetSelectedObjectsComponent2(SelMan.GetSelectedObjectCount)

to get the last object selected. Then I check if it is in my list and if
the item is found it removes the item if not it adds the item.

Anyone have any Ideas they would like to share.

Corey

 

Corey,

I have not run into this problem, but you could solve it using an old
programmer's trick.

Set up a global boolean variable called FirstTime and set it equal to true.
Then, after the first time, set it equal to what ever it is not. Then, only
run your code if FirstTime is true. Just make sure you set FirstTime back
to true after your desired code runs?

Does that make sense?

Evan

 

I know what you are saying and I already have that in there but my problem
is when it is deselecting from the FM tree SW calls the selectionchange
event lets it run all the way through so my FirstTime switch is set to false
and back to true, then SW calls selection change again. I can't figure out
anyway to stop it. I e-mailed API support but they haven't responded yet.

Corey

"Evan T. Basalik" <Evan(do not dare spam me -
remove)> wrote in message

 

Just a thought, add another conditional statement in there to only
allow the FirstTime switch to be set to True *if* something was
*added* to the selection list. If a component was deselected then skip
the FirstTime switch. May even require a second "global boolean
variable".

Ken