| GeoCalculateHelperCalculateLen 方法  | 
 
            屏幕尺寸(像素)
            
 
        命名空间: 
     GISShare.SMap.Geometry
        程序集:
     GISShare.SMap (在 GISShare.SMap.dll 中) 版本:1.9.1.6 (1.9.1.6)
 语法
语法public static double CalculateLen(
	double dDPI,
	double dMapLen,
	double dScaleM,
	ISpatialReference pSpatialReference
)
Public Shared Function CalculateLen ( 
	dDPI As Double,
	dMapLen As Double,
	dScaleM As Double,
	pSpatialReference As ISpatialReference
) As Double
public:
static double CalculateLen(
	double dDPI, 
	double dMapLen, 
	double dScaleM, 
	ISpatialReference^ pSpatialReference
)
static member CalculateLen : 
        dDPI : float * 
        dMapLen : float * 
        dScaleM : float * 
        pSpatialReference : ISpatialReference -> float 
参数
- dDPI
- 类型: SystemDouble
 当前设备的DPI(常规:96.0D)
- dMapLen
- 类型: SystemDouble
 屏幕尺寸对应的实际尺寸(米)
- dScaleM
- 类型: SystemDouble
 地图比例尺的分母部分(米)
- pSpatialReference
- 类型: GISShare.SMap.SpatialReferenceISpatialReference
 地图空间参考
返回值
类型: 
Double屏幕尺寸(像素)
 参见
参见