class TGRedirectOutputGuard

TGRedirectOutputGuard

This class provides output redirection to a TGTextView in guaranteed
exception safe way. Use like this:
{
TGRedirectOutputGuard guard(textview);
... // do something
guard.Update();
... // do something else
}
when guard goes out of scope, Update() is called to flush what left
n the screed and the output is automatically redirected again t
the standard units.
The exception mechanism takes care of calling the dtors
of local objects so it is exception safe.
Optionally the output can also be saved into a file:
{
TGRedirectOutputGuard guard(textview, file, mode);
... // do something
}