Expandable rows appear in views that contain categorized columns; document sections are also expandable. For your icons to be visible in a view, each image should be no wider than 6 pixels. The font size of the column text determines how high your image should be. For a column with text that has a font size of 10, each image should be no higher than 12 pixels.

1. Using a graphics program, create an image well by importing two images into one graphic. One of the images will appear as the icon that expands a row or section, and the other will appear as the icon that collapses the row or section. Place the expand image on the left and the collapse image on the right.

2. In Designer, create an image resource from the icon file.

3. In the Image Resource work pane, double-click the image resource to open the Image Resources Properties box:

• Enter "2" next to "Images across."
• Check "Web browser compatible."

• Check "Show twistie when row is expandable."
• Enter the name of the image resource file you just created in the "Twistie Image" setting. Click the folder button to browse for the image file.

Creating an image resource
Creating image resource sets
Creating columns in a view