[Info-vax] disabling a CTRL/Y ast

[Stephen Hoffman]

On 2016-01-06 15:15:09 +0000, Tom Adams said:

> Section 5.4.3.2 here:
> 
> http://www2.hmc.edu/www_common/OVMS072-OLD/72final/6136/6136pro_019.html
> 
> explains how to enable a ctrl/y ast using IO$M_CTRLYAST. It also says:
> 
> "This function code is also used to disable the AST."
> 
> but I cannot figure out the arguments of the QIOW call that would 
> disable the AST.
> 
> How does one disable the AST?


That doesn't do what you want.

That disables the AST that was set — by specifying 0 as the AST routine 
address — but in the case you're still working toward, you want no ^Y.

"P1---Address of the AST service or 0 if the corresponding AST is disabled"

See the lib$enable_ctrl and lib$disable_ctrl calls to enable and 
disable the associated CLI-level handling — which is what you want and 
need here, if you're not going to segment the code to avoid the problem 
— and also see replies to your previous postings here.



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