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beep vs. beep(100,100)

Posted on 2000-02-27
Medium Priority
Last Modified: 2010-04-04
There seem to be 2 beeps in Delphi 4.  Sometimes I have access to one function and not the other.  What are the exact circumstances/unit uses that I need to have to control which version of beep I get.  Could I potentially be able to have access to both version of beep in the same unit?

Question by:abulka
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Accepted Solution

ahalya earned 200 total points
ID: 2563443
yes, you can use both.

One is coming from Windows.pas (& finally from kernel32.dll) & the otherone from SysUtils.pas (& finally from User32.dll).  

you can call like this to select the one you prefer:

windows.beep(100, 100);


Expert Comment

ID: 2563453
and btw, if you don't qualify the function name with the unit, then the order in which you define units in the uses clause becomes critical.


uses Windows, sysUtils;

beep; //<---- comes from sys utils.

uses SysUtils, Windows;

beep(10, 10); //<---- comes from windows.

Expert Comment

ID: 2563636
Of note:

Windows.Beep ignores the duration in Windows 95/98.

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