function Leadtools.Controls.ImageViewer.invalidate()
!MISSING Scrap '_RTJavaScript_Method_SYNTAX'!
Calling Invalidate will cause the viewer to re-render the content of the background onto the foreground canvas. For more information, refer to the Rendering section in ImageViewer.
Invalidate may only schedule a rendering operation if HTML 5 animation request is used. For more information, refer to EnableRequestAnimationFrame.
For an example, refer to Transform.