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DistanceToReal 方法（ActiveX）

2024-5-18 18:44| 发布者: admin| 查看: 19| 评论: 0|原作者: admin|来自: AutoCAD

将字符串的距离转换为实数（双精度）值。

支持的平台：仅限 Windows

签名

VBA：

RetVal = DistanceToReal(Distance, Unit)

对象

类型： 实用程序

此方法应用到的对象。

距离

访问：仅输入

类型：字符串

以字符串值表示的距离。

单位

访问：仅输入

类型：枚举AcUnits

要将字符串转换为的单位。

acDefaultUnits
acScientific
acDecimal
acEngineering
acArchitectural
acFractional

返回值（RetVal）

类型：双

以实数表示的距离。

言论

没有其他评论。

例子

VBA：

Sub Example_DistanceToReal()
    ' This example passes several different distances in
    ' different units to be converted to real values.
    
    Dim distAsString As String
    Dim unit As Long
    Dim distAsReal As Double
    
    ' Convert the distance to a real in scientific units
    unit = acScientific
    distAsString = "1.75E+01"
    distAsReal = ThisDrawing.Utility.DistanceToReal(distAsString, unit)
    MsgBox "1.75E+01 converts to " & distAsReal & " in scientific units.", , "DistanceToReal Example"
    
    ' Convert the distance to a real in decimal units
    unit = acDecimal
    distAsString = "17.5"
    distAsReal = ThisDrawing.Utility.DistanceToReal(distAsString, unit)
    MsgBox "1.75 converts to " & distAsReal & " in decimal units.", , "DistanceToReal Example"
    
    ' Convert the distance to a real in engineering units
    unit = acEngineering
    distAsString = "1'-5.50"""
    distAsReal = ThisDrawing.Utility.DistanceToReal(distAsString, unit)
    MsgBox "1'-5.50"" converts to " & distAsReal & " in engineering units.", , "DistanceToReal Example"
    
    ' Convert the distance to a real in architectural units
    unit = acArchitectural
    distAsString = "1'-5 1/2"""
    distAsReal = ThisDrawing.Utility.DistanceToReal(distAsString, unit)
    MsgBox "1'-5 1/2"" converts to " & distAsReal & " in architectural units.", , "DistanceToReal Example"
    
    ' Convert the distance to a real in fractional units
    unit = acFractional
    distAsString = "17 1/2"
    distAsReal = ThisDrawing.Utility.DistanceToReal(distAsString, unit)
    MsgBox "1'-5 1/2"" converts to " & distAsReal & " in fractional units.", , "DistanceToReal Example"
    
End Sub

可视化 LISP：

(vl-load-com)
(defun c:Example_DistanceToReal()
    ;; This example passes several different distances in
    ;; different units to be converted to real values.
    (setq acadObj (vlax-get-acad-object))
    (setq doc (vla-get-ActiveDocument acadObj))
  
    ;; Convert the distance to a real in scientific units
    (setq unit acScientific
          distAsString "1.75E+01"
          distAsReal (vla-DistanceToReal (vla-get-Utility doc) distAsString unit))
    (alert (strcat "1.75E+01 converts to " (rtos distAsReal 2) " in scientific units."))
    
    ;; Convert the distance to a real in decimal units
    (setq unit acDecimal
          distAsString "17.5"
	         distAsReal (vla-DistanceToReal (vla-get-Utility doc) distAsString unit))
    (alert (strcat "17.5 converts to " (rtos distAsReal 2) " in decimal units."))
    
    ;; Convert the distance to a real in engineering units
    (setq unit acEngineering
          distAsString "1'-5.50\""
	         distAsReal (vla-DistanceToReal (vla-get-Utility doc) distAsString unit))
    (alert (strcat "1'-5.50\" converts to " (rtos distAsReal 2) " in engineering units."))
    
    ;; Convert the distance to a real in architectural units
    (setq unit acArchitectural
          distAsString "1'-5 1/2\""
	         distAsReal (vla-DistanceToReal (vla-get-Utility doc) distAsString unit))
    (alert (strcat "1'-5 1/2\" converts to " (rtos distAsReal 2) " in architectural units."))
    
    ;; Convert the distance to a real in fractional units
    (setq unit acFractional
          distAsString "17 1/2"
	         distAsReal (vla-DistanceToReal (vla-get-Utility doc) distAsString unit))
    (alert (strcat "17 1/2 converts to " (rtos distAsReal 2) " in fractional units."))
)