The change of 4990515aba resulted in
(disabled by default, but which may be enabled when building
applications using wxWidgets) MSVS 2017 warning C4265 ('class' : class
has virtual functions, but destructor is not virtual), so test for clang
explicitly instead of just testing for non-gcc.
This class shouldn't need to be exported but not doing it breaks builds using
LTCG with Intel compiler, so do export it to avoid this problem.
Closes#16237.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76485 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Since the addition of wxMSWOwnerDrawnButton, DLL builds started generated a
lot of warnings about using this non DLL-exported class as base class for the
DLL-exported wxCheckBox and wxRadioButton.
Simply suppress these warnings as they are harmless in this case because the
base class has no static data, which is the real problem this warning hints at.
Closes#16237.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76478 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Create wxMSWOwnerDrawnButton class which contains all of this code.
Currently the methods of this class are (still) implemented in
src/msw/control.cpp.
See #10137.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76459 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
