xif_initialize(+Name, +Class, -Widget)

Call this predicate instead of xtInitialize/3 to initialize Xt when you plan to use ProXL. The arguments and usage are the same as for xtInitialize/3.

xif_initialize/3 sets ProXL's notion of default screen to the same screen ProXT is using. This will ensure that ProXL objects you create can be used with your widgets.