Displays an interactive grayscale dialog with settings and before and after thumbnails.

Use the Gray Scale dialog to convert the active image to a gray scale image without changing its bit depth. If an image has 8 bits/pixel or less, the dialog will ignore selections, embedded or floating, and it will apply the effect to the entire image.

Zoom: the preview thumbnails can either be 1:1 (actual size) or they can fit the thumbnail size.
Zoom tool: display the zoom toolbar buttons on the dialog.
Auto-process: the dialog will process the image with the selected dialog options; so, a separate call to the LEADTOOLS Gray Scale function is not required.
Help: the dialog can display a context sensitive help icon.
Show preview: dialog will have a thumbnail preview of the before and after of the image.