displaylist.lastchange

return a number that specifies the state of the displaylist

Synopsis
lastchange()

Description
It is sometimes useful to know whether or not the displaylist has changed since the last time you have looked at it (given that the displaylist will often be under user control through some GUI). If the number returned by this function has changed since the last time you called it, it has. The number returned is always non-negative, so you can initialize your cache with a negative number.

Returns
integer

Next: displaylist.gui - Function Up: displaylist - Tool Previous: displaylist.apply - Function Contents Index

	Package	display
	Module	guiutils
	Tool	displaylist

displaylist.lastchange - Function