nf-msi-msiqueryproductstatew.md

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NF:msi.MsiQueryProductStateW	MsiQueryProductStateW function (msi.h)	The MsiQueryProductState function returns the installed state for a product. (Unicode)	MsiQueryProductState MsiQueryProductState function MsiQueryProductStateW _msi_msiqueryproductstate msi/MsiQueryProductState msi/MsiQueryProductStateW setup.msiqueryproductstate	setup\msiqueryproductstate.htm	setup	f26f3229-d1ce-4802-99b1-857c6501c828	12/05/2018	MsiQueryProductState, MsiQueryProductState function, MsiQueryProductStateA, MsiQueryProductStateW, _msi_msiqueryproductstate, msi/MsiQueryProductState, msi/MsiQueryProductStateA, msi/MsiQueryProductStateW, setup.msiqueryproductstate	msi.h		Windows	Windows Installer 5.0 on Windows Server 2012, Windows 8, Windows Server 2008 R2 or Windows 7. Windows Installer 4.0 or Windows Installer 4.5 on Windows Server 2008 or Windows Vista. Windows Installer on Windows Server 2003 or Windows XP. See the Windows Installer Run-Time Requirements for information about the minimum Windows service pack that is required by a Windows Installer version.					MsiQueryProductStateW (Unicode) and MsiQueryProductStateA (ANSI)						Msi.lib	Msi.dll		Windows			19H1	MsiQueryProductStateW msi/MsiQueryProductStateW	c++	APIRef kbSyntax	DllExport	Msi.dll	MsiQueryProductState MsiQueryProductStateA MsiQueryProductStateW

MsiQueryProductStateW function

-description

The MsiQueryProductState function returns the installed state for a product.

-parameters

-param szProduct [in]

Specifies the product code that identifies the product to be queried.

-returns

Value	Meaning
INSTALLSTATE_ABSENT	The product is installed for a different user.
INSTALLSTATE_ADVERTISED	The product is advertised but not installed.
INSTALLSTATE_DEFAULT	The product is installed for the current user.
INSTALLSTATE_INVALIDARG	An invalid parameter was passed to the function.
INSTALLSTATE_UNKNOWN	The product is neither advertised or installed.

 

 

-see-also

System Status Functions

-remarks

Note

The msi.h header defines MsiQueryProductState as an alias which automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.