Use wxFRAME_TOOL_WINDOW style for the STC’s calltip window to avoid crashing on OSX.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/wxPy-3.0.0@75412 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Include frame.h at the beginning of the file instead of in the middle.  It will be needed earlier in some cases.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/wxPy-3.0.0@75413 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Guard against trying to use extend() with None

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/wxPy-3.0.0@75414 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add the ability to show a CallTip in the stc sample.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/wxPy-3.0.0@75415 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Document ctors and dtor for wxListView

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/wxPy-3.0.0@75416 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add comment about use of wxFRAME_TOOL_WINDOW

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/wxPy-3.0.0@75417 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775