isExtant: Check if widget is extant.
In jverzani/gWidgets2: Rewrite of gWidgets API for Simplified GUI Construction

Widgets can be destroyed, but their R object is still present. This is FALSE in that case.

Basic S3 method for isExtant

isExtant(obj)

## Default S3 method:
isExtant(obj)

obj

object

jverzani/gWidgets2 documentation built on May 20, 2019, 5:17 a.m.

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README.md The gWidgets2 package

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