重绘CBCGPGridCtrl的表头，更改背景色，选中后颜色，标题字体及颜色，表格文字字体及颜色，选中单元格颜色、边框色，修改原来的表格线条等 Demo在VS2010下调试通过，所用BCG版本为2310-Painted a CBCGPGridCtrl header change background color, color selection, title font and color, form text fonts and colors, selected cell color, bord