-#if wxUSE_EXCEPTIONS
- try
- {
-#endif
- // use placement new to initialize new object in preallocated place
- // in m_values and store 'v' in it:
- void* const place = m_values + idx;
- new(place) value_type(v);
-#if wxUSE_EXCEPTIONS
- }
- catch ( ... )
- {
- // if the ctor threw an exception, we need to move all the elements
- // back to their original positions in m_values
- if ( after > 0 )
- {
- Ops::MemmoveBackward(m_values + idx, m_values + idx + 1, after);
- }
-
- throw; // rethrow the exception
- }
-#endif // wxUSE_EXCEPTIONS
+ // if the ctor called below throws an exception, we need to move all
+ // the elements back to their original positions in m_values
+ wxScopeGuard moveBack = wxMakeGuard(
+ Ops::MemmoveBackward, place, place + 1, after);
+ if ( !after )
+ moveBack.Dismiss();