Get a list of variables defined and set by the GUI widgets. An optional
argument scope directs the function to create local or global
variables based on the list that is returned.
getWinVal(v=NULL, scope="", asvector=FALSE, winName="")vector of variable names to retrieve from the GUI widgets.
If NULL, v retrieves all variables from all GUI widgets.
scope of the retrieval. The default sets no variables
in the non-GUI environment; scope="L" creates variables
locally in relation to the parent frame that called the function;
scope="P" creates variables in the temporary package
workspace called .PBSmodEnv; and scope="G" creates
global variables (pos=1).
return a vector instead of a list. WARNING: if a widget variable defines a true vector or matrix, this will not work.
window from which to select GUI widget values. The default takes the window that has most recently received new user input.
A list (or vector) with named components, where names and values are defined by GUI widgets.
TODO: talk about scope=G/P/L and side effects of overwriting existing variables