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GetPoint 方法（ActiveX）

2024-5-18 18:44| 发布者: admin| 查看: 303| 评论: 0|原作者: admin|来自: AutoCAD

获取在AutoCAD中选定的点。

支持的平台：仅限 Windows

签名

VBA：

RetVal = object.GetPoint([Point [, Prompt]])

对象

类型： 实用程序

此方法应用到的对象。

点

访问：仅输入;自选

类型：变体（双打的三元素阵列）

指定相对基点的 3D WCS 坐标。

提示

访问：仅输入;自选

类型：变体（字符串）

用于提示用户输入的文本。

返回值（RetVal）

类型：变体（双打的三元素阵列）

AutoCAD 用户所选点的三维 WCS 坐标。

言论

AutoCAD 暂停用户输入点，并将返回值设置为选定点的值。Point 参数指定 WCS 中的相对基点。Prompt 参数指定 AutoCAD 在暂停之前显示的字符串。“点”和“提示”都是可选的。

AutoCAD 用户可以通过以当前单位格式输入坐标来指定点; 将 Point 参数和返回值视为三维点。用户也可以通过在图形屏幕上指定位置来指定该点。如果提供了“点”参数，AutoCAD 将绘制一条从“点”到当前十字准线位置的橡皮筋线。GetPoint

存储在返回值中的点的坐标以 WCS 表示。

如果返回的是关键字而不是点，AutoCAD 将生成错误消息“用户输入关键字”。使用该方法从返回值中获取关键字。GetInput

例子

VBA：

Sub Example_GetPoint()
    ' This example returns a point entered by the user.
    
    AppActivate ThisDrawing.Application.Caption
    
    Dim returnPnt As Variant
    
    ' Return a point using a prompt
    returnPnt = ThisDrawing.Utility.GetPoint(, "Enter a point: ")
    MsgBox "The WCS of the point is: " & returnPnt(0) & ", " & returnPnt(1) & ", " & returnPnt(2) & vbCrLf & _
           "(Enter the next value without prompting.)", , "GetPoint Example"
    
    ' Return a point, no prompt
    returnPnt = ThisDrawing.Utility.GetPoint
    MsgBox "The WCS of the point is: " & returnPnt(0) & ", " & returnPnt(1) & ", " & returnPnt(2), , "GetPoint Example"
    
    ' Return a point using a base point and a prompt
    Dim basePnt(0 To 2) As Double
    basePnt(0) = 2#: basePnt(1) = 2#: basePnt(2) = 0#
    returnPnt = ThisDrawing.Utility.GetPoint(basePnt, "Enter a point: ")
    MsgBox "The WCS of the point is: " & returnPnt(0) & ", " & returnPnt(1) & ", " & returnPnt(2)
    
    ' Create a line from the base point and the last point entered
    Dim lineObj As AcadLine
    Set lineObj = ThisDrawing.ModelSpace.AddLine(basePnt, returnPnt)
    ZoomAll
    
End Sub

可视化 LISP：

(vl-load-com)
(defun c:Example_GetPoint()
    ;; This example returns a point entered by the user.
    (setq acadObj (vlax-get-acad-object))
    (setq doc (vla-get-ActiveDocument acadObj))
  
    ;; Return a point using a prompt
    (setq returnPnt (vlax-variant-value (vla-GetPoint (vla-get-Utility doc) nil "Enter a point: ")))
    (alert (strcat "The WCS of the point is: " (rtos (vlax-safearray-get-element returnPnt 0) 2) ", "
		                                             (rtos (vlax-safearray-get-element returnPnt 1) 2) ", "
		                                             (rtos (vlax-safearray-get-element returnPnt 2) 2) "\n"
                                               "(Enter the next value without prompting.)"))
    
    ;; Return a point, no prompt
    (setq returnPnt (vlax-variant-value (vla-GetPoint (vla-get-Utility doc))))
    (alert (strcat "The WCS of the point is: " (rtos (vlax-safearray-get-element returnPnt 0) 2) ", "
		                                             (rtos (vlax-safearray-get-element returnPnt 1) 2) ", "
		                                             (rtos (vlax-safearray-get-element returnPnt 2) 2)))
    
    ;; Return a point using a base point and a prompt
    (setq basePnt (vlax-3d-point 2 2 0))
    (setq returnPnt (vlax-variant-value (vla-GetPoint (vla-get-Utility doc) basePnt "Enter a point: ")))
    (alert (strcat "The WCS of the point is: " (rtos (vlax-safearray-get-element returnPnt 0) 2) ", "
		                                             (rtos (vlax-safearray-get-element returnPnt 1) 2) ", "
		                                             (rtos (vlax-safearray-get-element returnPnt 2) 2)))
    
    ;; Create a line from the base point and the last point entered
    (setq modelSpace (vla-get-ModelSpace doc))
    (setq lineObj (vla-AddLine modelSpace basePnt returnPnt))
    (vla-ZoomAll acadObj)
)