David Lee Lambert escreveu:
On Tue, May 17, 2005 at 10:43:25AM -0300, Marcelo Duarte wrote:
Whats happens if a program calls bepp with invalid values for dwFreq and dwDur on a linux console?
The bell becomes inaudible until reset by another terminal-control sequence. However, the special value (duration=-1) does not have the same semantics; it's simply ignored.
On my box that has a PC speaker, the bell is silent when any of the following are true:
freq < 21 dur == 0 dur > 1999
I can't hear any tones above 12000 Hz or so, but I'm not sure whether that's my hearing, the speaker-hardware, or the kernel's decision.
Should I add range-checks on frequency and duration?
(the programmer thinks that dwFreq and dwDur are ignored by Win95).
That's what the API documentation says. Are they used on WinXP or Win2k?
If you have programs to test, send me.
-
Marcelo Duarte