National Instruments IMAQTM 用户手册

© National Instruments Corporation

During design time, use the Menu property page to select which tools 
appear in the right-click menu. You also can designate a default tool from 
this property page. During run time, set the 

CWIMAQViewer.MenuItems

 

to select the tools to display, and set 

CWIMAQViewer.Tool

 to select the 

default tool.

You can define ROIs programmatically using the CWIMAQRegions 
collection. In IMAQ Vision, shapes are represented by shape objects. 
For example, CWIMAQPoint represents a point, and CWIMAQLine 
represents a line. Use the following methods listed in Table 3-2 to add 
various shapes to the regions.

Use the 

CWIMAQRegions.CopyTo

 method to copy all the data from one 

CWIMAQRegions object to another.

You can define the regions on a viewer and access the regions using the 

CWIMAQViewer.Regions

 property.

The individual CWIMAQRegion objects provide access to the shapes in the 
collection. Each region has one shape object associated with it. Use the 

CWIMAQRegion.Shape

 property to determine what type of shape the 

Table 3-2.  Methods that Add Shapes to Regions

AddPoint

adds a point to the ROI

AddLine

adds a line to the ROI

AddRectangle

adds a rectangle to the ROI

AddRotatedRectangle

adds a rotated rectangle to the ROI

AddOval

adds an oval to the ROI

AddAnnulus

adds an annulus to the ROI

AddBrokenLine

adds a broken line to the ROI

AddPolygon

adds a polygon to the ROI

AddFreeline

adds a free line to the ROI

AddFreeregion

adds a free region to the ROI

AddRegion

adds a region object to the ROI