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IVsShell.IsPackageInstalled Method

Determines whether a VSPackage identified by guidPackage is installed and registered with the system.

Namespace: Microsoft.VisualStudio.Shell.Interop
Assembly: Microsoft.VisualStudio.Shell.Interop (in microsoft.visualstudio.shell.interop.dll)

int IsPackageInstalled (
	[InAttribute] ref Guid guidPackage,
	out int pfInstalled
)
int IsPackageInstalled (
	/** @attribute InAttribute() */ /** @ref */ Guid guidPackage, 
	/** @attribute OutAttribute() */ /** @ref */ int pfInstalled
)
JScript does not support passing value-type arguments by reference.

Parameters

guidPackage

[in] Unique identifier of the VSPackage.

pfInstalled

[out, retval] true if the VSPackage is installed in the registry.

Return Value

If the method succeeds, it returns S_OK. If it fails, it returns an error code.

COM Signature

From vsshell.idl:

HRESULT IVsShell::IsPackageInstalled(
   [in] REFGUID guidPackage,
   [out, retval] BOOL *pfInstalled
);

This method can be used to achieve advanced interactions between multiple VSPackages to determine whether they are loaded. It is recommended that you query for services that other VSPackages proffer.

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