About Stacked Canvases in Oracle Forms

Stacked canvases are displayed in a window along with the window's content canvas(es) and any number of other stacked canvases. You can set the bevel, color, and pattern attributes of a stacked canvas to make it look different than the underlying content canvas. Contrarily, you can make the stacked canvas look like the content canvas, and then show and hide the stacked canvas pro-grammatically so end users are unaware that a separate canvas is being displayed.