Andrdoi: Attempt to fix a number of issues querying containers. Always returning nullptr from the query functions made it always fail. Varaibles were incorrectly named and I had incorrectly assumed the SparseBooleanArray only returned checked items. This is not the case, it only returns items that were changed. So we now take this array and create a copy but only including the items that are checked so the code works as intended.

prefix=@prefix@
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${exec_prefix}/include
 
Name: dwindows
Description: Dynamic Windows Cross platform UI Toolkit
Version: @VERSION@
Libs: -L${prefix}/lib -ldwindows @LIBS@
Cflags: -I${prefix}/include @CFLAGS@ -D@DW_DEFINE@