National Instruments IMAQTM 用户手册

Private Sub Stop_Click()

CWIMAQ1.Stop

End Sub

Use the 

CWIMAQVision.ReadImage

 method to open and read data from 

a file stored on the computer into the image reference. You can read from 
image files stored in several standard formats, such as BMP, TIFF, JPEG, 
PNG, and AIPD. In all cases, the software automatically converts the pixels 
it reads into the type of image you pass in.

Use the 

CWIMAQVision.ReadImageAndVisionInfo

 method to open an 

image file containing additional information, such as calibration 
information, template information for pattern matching, or overlay 
information. For more information about pattern matching templates 
and overlays, refer to Chapter 5, 

You also can use the 

CWIMAQVision.GetFileInformation

 method 

to retrieve image properties—image size, pixel depth, recommended image 
type, and calibration units—without actually reading all the image data.

Use the 

CWIMAQImage.ArrayToImage

 method to convert an array to an 

image. You also can use the 

CWIMAQImage.ImageToArray

 method to 

convert an image to an array.

Display an image using the CWIMAQViewer control. Use 

CWIMAQViewer.Attach

 to attach the image you want the viewer 

to display. When you attach an image to a viewer, the image automatically 
updates the viewer whenever an operation modifies the contents of the 
image. You can access the image attached to the viewer using the 

CWIMAQViewer.Image

 property. Before you attach an image to the 

viewer, the viewer already has an image attached by default. Therefore, the 
viewer has an image attached to it at all times. You can use the attached 
image as either a source image, destination image, or both using the 

CWIMAQViewer.Image

 property.

You can use the 

CWIMAQViewer.Palette

 property to access the 

CWIMAQPalette object associated with the viewer. Use the 
CWIMAQPalette object to programmatically apply a color palette to