A function returning a boolean value depending on the three arguments. A \fBBoolFun\fP is used f.i. in method \fImethod Collection::Select\fP to test every object contained in the collection.
.SH ARGUMENTS
.TP
\fBObjPtr firstObject
.br
First Object. Semantics depend on implementation.
.TP
\fBObjPtr secondObject
.br
Second Object. Semantics depend on implementation.
.TP
\fBvoid* arg
.br
Some arbitrary argument. Semantics depend on implementation.
.SH RETURN ARGUMENT
.TP
\fBbool
.br
\fBTRUE\fP or \fBFALSE\fP. Semantics depend on implementation.