// implementation attributes which control layout of the splitter
int m_cxSplitter, m_cySplitter; // size of splitter bar
int m_cxBorderShare, m_cyBorderShare; // space on either side of splitter
int m_cxSplitterGap, m_cySplitterGap; // amount of space between panes
int m_cxBorder, m_cyBorder; // borders in client area