Image Acquisitionand Proces

Displaying Images 75
FIGURE 4.19 Simple image browser example.
FIGURE 4.20 Simple image browser example — wiring diagram.
As the image browser is a ßoating IMAQ image window, you can embed it as
a child into a parent VI, as discussed previously (Figure 4.21). Adding this code
embeds the image browser into the parent VI’s front panel (Figure 4.22).
One useful example of image browsers is to allow the user to select a thumbnail,
and then display (and perhaps process) the full image on the front panel of
a VI. This is achieved by embedding both the image browser and preview image
into the parent VI, and using the selected browser thumbnail to dictate which
image is loaded into the preview image (Figure 4.23). As not to continually load
images into the preview image, even when the user has not selected a different
image, IMAQ WindLastEvent is used to monitor if the user has clicked within
the image browser (Figure 4.24)