The Invalidate Rgn function invalidates the client area within the specified region by adding it to the current update region of a window.
Most of us wonder why the populations in the world who seem to have the greatest mobility and most material possessions are suffering from the yoke of despair and depression. As human beings we need to be both independent and interdependent.
The specified region must have been created by using one of the region functions.
In invalidate you see the word valid which means true or correct.
If you have a wacky theory that cars grow from trees, your teacher might invalidate your theory by taking you on a tour of an auto factory.
The first lessons are about finding yourself and becoming whole.