With the help of this feature, a function call without complete style para will use the default.

using props_vis to get detailed prop showing status for specified items
using show_props to determing detailed props visibility for the giving items

disable UI list refresh during geomarker layer calls. the UI list refresh will significantly reduce performance

the c# app provides most function demos,
the MFC app demos antimation drawing effect.

Multiline can hold several lines in one top-level item. now, point, line, multiline, polygon, these geo types can hold WKT style geo elements in future.

2.sloved a geomarker graphics item click and dblclick mismatch. In old case, when mouse clicks, a dblclick message will be pumped.

the map will be refreshed when items deleted from scene.

2. set 3 method, perpare for call_func.
Signed-off-by: goldenhawking <goldenhawking@163.com>

2. Add a Item clicked event, for  geomarker.

pen and brush now are  independent with shapes.