xsharp.eu

Posted: **Sat Feb 03, 2024 9:09 pm**

Hi,

Is there a way to tell the compiler not to warn us with a XS0219: The variable 'nLen' is assigned but its value is never used when the variable is actually used in a function requiring an OUT parameter ?
enven if we don't use the variable, we still need it ie:

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WTSQuerySessionInformation( WTS_CURRENT_SERVER_HANDLE, WTS_CURRENT_SESSION, WTSClientAddress, OUT pBuffer, OUT nLen )

Not a big deal but we're hunting all the warnings

Posted: **Sat Feb 03, 2024 9:15 pm**

Hi Basile,
you can disable every warning you like in the compiler options.
But you can disable it also in every place of your source where you like setting a pragma:
https://www.xsharp.eu/help/pp-pragma-warnings.html
Wolfgang

Posted: **Sun Feb 04, 2024 7:27 am**

Basile,

If you're not using the variable, then you can also pass what's called the 'discard variable' which is just a single underscore.
If you prefix the name with the VAR keyword then the variable gets automatically declared with the right type. That looks like this:

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TSQuerySessionInformation( WTS_CURRENT_SERVER_HANDLE, WTS_CURRENT_SESSION, WTSClientAddress, OUT pBuffer, OUT VAR _ )

Robert

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XS0219 and OUT parameters

XS0219 and OUT parameters

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Re: XS0219 and OUT parameters