Pointer to a brush object. Set to NULL to use the default halftone brush.
Pointer to a brush object. Set to NULL to use the default halftone brush.
指向画刷的指针。设置为NULL时，使用缺省的黑白画刷。
Pointer to a brush object. Set to NULL to use the default halftone brush.
指向画刷的指针。设置为NULL时，使用缺省的黑白画刷。