I just hit an oddity where INSTANCE(Var,ThreadNum) doesn’t work on some data
However declaring the data as a property of a class,thread does work.
I wanted to be able to get the Window Title of the topmost window on each thread
I already had a system where I tracked the most recent window that had focus (other than the frame)
I do this by calling a method inside of every accept loop with the current window
that method set’s a &Window property - (protected by reader/writer sync objects)
(yes eventually I’ll create a system that relies on OpenWindowHook & CloseWindowHook, but I’m getting off of the subject)
So… I figured I could just add a &Window,THREAD variable and set that in my method
then later use INSTANCE( TheVar, ThreadNum ) but it didn’t work.
I wrote a testbed,
I tried working with other data types, namely &STRING,THREAD and QUEUE,THREAD
I did get success with the QUEUE
but could not get the &STRING to work.
Note: tested in C11.0.13224
I copied the example program out of the ClarionHelp.chm, and it worked as advertised.
Hmm, WTF am I missing?
Looking at the example closely, I eventually decided to try moving my data into properties of a class,thread which is what we see in the help file example,
and suddenly INSTANCE was working for my &String too.
ctWinVar CLASS,TYPE Win &Window END Thd:CurrentWindow ctWinVar,THREAD !Thd:CurrentWindow &Window,THREAD ! <<<- didn't work with INSTANCE !============================================== ctCommonGlobal.SET_CurrWindow PROCEDURE(*WINDOW xaWindow) CODE SELF.CurrentWindowRW.Set(xaWindow) !<-- my original system Thd:CurrentWindow.Win &= xaWindow !============================================== ctCommonGlobal.Get_CurrWindowOnThread PROCEDURE(SIGNED xThreadNum)!,*WINDOW RetWindow &Window oWinVar &ctWinVar CODE oWinVar &= INSTANCE( Thd:CurrentWindow, xThreadNum ) IF oWinVar &= NULL RetWindow &= NULL ELSE RetWindow &= oWinVar.Win END RETURN RetWindow