[glibmm] gmmproc: Add macro _CUSTOM_CTOR_CAST in _CLASS_BOXEDTYPE.

[Murray Cumming <murrayc src gnome org>]

commit 495387b090e3094d58a524b73a9ddabdc5a0aa3e
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Thu Apr 5 16:32:52 2012 +0200

    gmmproc: Add macro _CUSTOM_CTOR_CAST in _CLASS_BOXEDTYPE.
    
    * tools/m4/class_boxedtype.m4: Add macro _CUSTOM_CTOR_CAST.
    Bug #511136, comment 20.

 ChangeLog                   |    7 +++++++
 tools/m4/class_boxedtype.m4 |   10 ++++++++++
 2 files changed, 17 insertions(+), 0 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 8cc1e87..ab01598 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2012-04-05  Kjell Ahlstedt  <kjell ahlstedt bredband net>
+
+	gmmproc: Add macro _CUSTOM_CTOR_CAST in _CLASS_BOXEDTYPE.
+
+	* tools/m4/class_boxedtype.m4: Add macro _CUSTOM_CTOR_CAST.
+	Bug #511136, comment 20.
+
 2012-04-10  Chun-wei Fan  <fanc999 src gnome org>
 
 	Update Visual Studio projects
diff --git a/tools/m4/class_boxedtype.m4 b/tools/m4/class_boxedtype.m4
index f3186d4..fce5f65 100644
--- a/tools/m4/class_boxedtype.m4
+++ b/tools/m4/class_boxedtype.m4
@@ -21,6 +21,12 @@ define(`__BOOL_CUSTOM_DEFAULT_CTOR__',`$1')
 _POP()
 ')
 
+define(`_CUSTOM_CTOR_CAST',`dnl
+_PUSH()
+dnl Define this macro to be tested for later.
+define(`__BOOL_CUSTOM_CTOR_CAST__',`$1')
+_POP()
+')
 
 _POP()
 _SECTION(SECTION_CLASS2)
@@ -129,6 +135,7 @@ __CPPNAME__::__CPPNAME__`'(const __CPPNAME__& other)
   gobject_ ((other.gobject_) ? __BOXEDTYPE_FUNC_COPY`'(other.gobject_) : 0)
 {}
 
+ifdef(`__BOOL_CUSTOM_CTOR_CAST__',,`dnl else
 __CPPNAME__::__CPPNAME__`'(__CNAME__* gobject, bool make_a_copy)
 :
   // For BoxedType wrappers, make_a_copy is true by default.  The static
@@ -136,6 +143,7 @@ __CPPNAME__::__CPPNAME__`'(__CNAME__* gobject, bool make_a_copy)
   // ensures identical behaviour if the default argument is used.
   gobject_ ((make_a_copy && gobject) ? __BOXEDTYPE_FUNC_COPY`'(gobject) : gobject)
 {}
+')dnl
 
 __CPPNAME__& __CPPNAME__::operator=(const __CPPNAME__`'& other)
 {
@@ -191,7 +199,9 @@ ifdef(`__BOOL_CUSTOM_DEFAULT_CTOR__',`dnl
   __CPPNAME__`'();
 ')dnl
 
+ifdef(`__BOOL_CUSTOM_CTOR_CAST__',,`dnl else
   explicit __CPPNAME__`'(__CNAME__* gobject, bool make_a_copy = true);
+')dnl
 
   __CPPNAME__`'(const __CPPNAME__& other);
   __CPPNAME__& operator=(const __CPPNAME__& other);