thanks Zack, your solution works. 
you put the creation of the ofEasyCam instance in a Lua script where i
used the Ofelia Pd object. 
with the Lua script the the 'old' instance is replaced by a fresh one
everytime [ofSetup] is done. 
am i right this shows  a significant difference between the two patching
methods. 
is this only with [ofSetup] ? 
rolf 
Zack Lee schreef op 07-03-2020 5:56:
> Hi Rolf, 
> 
> I think it is [ofEasyCam]'s problem. 
> After you recreate the window, if you also recreate [ofEasyCam MA-cam] object and call "setupPerspective()", it works again. 
> 
> One way to fix this could be to recreate the ofEasyCam class instance whenever the window is created. 
> I attached the patch that does this. Let me know if you still have the problem. 
> 
> Regards, 
> Zack 
> 
> 2020년 3월 5일 (목) 오전 7:21, <rolfm(a)dds.nl>님이 작성: 
> 
>> hi, 
>> 
>> (windows 10, pd-50.0) 
>> 
>> 1. after destroy and create of the ofWindow i cannot use the mouse anymore to move the EasyCam. 
>> 
>> until now i didn't find a solution (workaround) for this. 
>> 
>> 2. when doing destroy and create in the same message the result seems to be unpredictable. 
>> 
>> using a [del 200] between destroy and create 'solves' this. (the 200 is just a choice). 
>> 
>> 3. after a reset (destroy and create ofWindow) my objects are at a position different from the one after initializing. 
>> 
>> (could this be connected with the EasyCam problem?) 
>> 
>> i've 'solved' this by doing the first reset automatically after initialisation. 
>> 
>> attached is a test patch demonstrating 1. and 3. 
>> 
>> i'm using the Pd objects of Ofelia (not Lua  script)  because it's easier for me to embed it in a bigger patch  
>> 
>> where data are send to different OF sub-patches. 
>> 
>> has anybody else encountered these problems? 
>> 
>> rolf 
>> 
>> @zack 
>> 
>> as you can see i'm making progress.