=head1 NAME

API - wxPerl extension API documentation

=head1 DESCRIPTION

=head2 WXPL_API_VERSION

An integer value used to differentiate wxPerl versions, it is guaranteed to
be non-decreasing. wxPerl 0.15 value is 0150; wxPerl 1.00 value will be
1000, wxPerl 2.12 value will be 2120.

I<Introduced in wxPerl 0.15>

=head2 wxPli_create_evthandler

  SV* wxPli_create_evthandler( pTHX_ wxEvtHandler* object,
                               const char* classname );

Creates a new hash reference, blessed into C<classname>,
and bindsC<object> to it.

I<Introduced in wxPerl 0.16>

=head2 wxPli_evthandler_2_sv

  SV* wxPli_evthandler_2_sv( pTHX_ SV* var, wxEvtHandler* evth );

Same as L<wxPli_object_2_sv>, but works with C<wxEvtHandler>-derived
classes, which includes all C<wxWindow>-derived classes.

I<Introduced in wxPerl 0.16>

=head2 wxPli_get_class

  const char* wxPli_get_class( pTHX_ SV* ref );

The C++ equivalent of C<$class = ref( $obj ) || $obj>; the pointer
returned by the function is potentially temporary.

=head2 wxPli_non_object_2_sv

  SV* wxPli_non_object_2_sv( pTHX_ SV* var, void* data, const char* package );

Binds a generic pointer to an C<SV*>, and returns it; the new binding
is blessed into the given C<package>.

I<Introduced before wxPerl 0.14>

=head2 wxPli_object_2_sv

  SV* wxPli_object_2_sv( pTHX_ SV* var, wxObject* object );

Binds a C<wxObject*> pointer to an C<SV*>, and returns it.  If the
object is already bound to an C<SV*>, returns a reference to the
existing C<SV*>, otherwise, it creates a new binding; in the latter
case, the new C<SV*> is blessed into a package obtained through the
wxWidgets RTTI system.

I<Introduced before wxPerl 0.14>

=head2 wxPli_push_arguments

  void wxPli_push_arguments( pTHX_ SV*** stack, const char* argtypes, ... );

  // example
  wxPli_push_arguments( aTHX_ SP, "iP", 12, "foo" );

Pushes a variable number of arguments on the perl stack,
it is useful for passing parameters to a Perl function. The
C<argtypes> string describes the types of subsequent arguments, each
character of the string specifying the type of a single
argument. Possible values are:

=over 4

=item b

a C<bool> value

=item i

an C<int> value

=item l

a C<long> value

=item L

an C<unsigned long> value

=item d

a C<double> value

=item p

a C<char*> value

=item w

a C<wxChar*> value

=item P

a C<wxString*> value

=item S

a C<SV*>, a B<copy> of the SV is pushed on the stack

=item s

a C<SV*>, the pointer itself is pushed on the stack

=item O

a C<wxObject*>, the function will internally call C<wxPli_object_2_sv>
and push the result on the stack.

=item o

this is the only type that uses 2 parameters: the first is a C<void*>,
the second a C<char*>; the function will internally call
C<wxPli_non_object_2_sv> and push the result on the stack.

=back

I<Introduced before wxPerl 0.14>

=head2 wxPli_sv_2_object

  void* wxPli_sv_2_object( pTHX_ SV* scalar, const char* classname );

Extracts a bound pointer from a perl reference, checking that
the reference belongs to the correct class (die()s on failure),
and returns it. If C<classname> is C<NULL>, the check is not done.

I<Introduced before wxPerl 0.14>

=head2 wxPli_wxChar_2_sv

  SV* wxPli_wxChar_2_sv( pTHX_ const wxChar* str, SV* out );

Stores a string into a C<SV*>, and returns the C<SV*>.

I<Introduced before wxPerl 0.14>

=head2 wxPli_wxString_2_sv

  SV* wxPli_wxString_2_sv( pTHX_ const wxString& str, SV* out );

Stores a string into a C<SV*>, and returns the C<SV*>.

I<Introduced before wxPerl 0.14>

=head1 AUTHOR

Mattia Barbon <mbarbon at cpan dot org>

=cut