[Wine] Regarding Wine Debugging

[sainath]

when we use WINEDEBUG=trace+relay ,it shows function calls of all dlls.
but,when a function is called in a dll ,it may call some other functions internally before return.
What is the channel we have to use to know the those function calls and their return values.

In the log report  of   WINEDEBUG=trace+relay  there are two variables "retval" and "ret".
what is their significance?