- Holding CTRL key during the interactive connection creation allows users to place control points
even "onto" an underlying shape without finishing the connection process.
- Fixed export of diagrams with disabled background to image files.

git-svn-id: svn://svn.code.sf.net/p/wxsf/code/trunk@428 1a166092-e534-0410-9de8-debdbcc2e763
- Fixed several warning messages which appeared when the wxSF was built by using clang compiler (patch by iwbnwif).

git-svn-id: svn://svn.code.sf.net/p/wxsf/code/trunk@429 1a166092-e534-0410-9de8-debdbcc2e763