WindowsAPI: windows-make: Returnable value and allocations.

From the under the sub lootin, return the allocation value is a right way.
You are much better if you use a convert from the file written in C language.

Microsoft WindowsAPI must be return value error number as "int" in their specification.
Nnumber administration is well for the all like any support calling and telling someone.

1: https://waitrudweber.hatenablog.com/entry/2022/06/06/195303

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-	-	-	-	-	-	-	-
	int	waveInOpen	LPHWAVEIN       phwi	UINT            uDeviceID	*	*	*

*Microsoft

We can say they are kind for the people and we don't usually see the param names the above bolds.

2: http://2: https://docs.microsoft.com/en-us/windows/win32/api/mmeapi/nf-mmeapi-waveinopen