License method

Description

The License method must be called to license the component for runtime use. This applies to both registered users as well as users of a time-limited free trial license.

If you do not call this method, Xceed Streaming Compression Library method calls will not work and will immediately return the cerNotLicensed error code.

When to call the License method

The License method must be the first method you call after instantiating the component and/or before any other methods are called. For example:

VB.NET	Copy Code
`Dim WithEvents m_xSco As XceedStreamingCompression Dim bReturn As Boolean Set m_xSco = new XceedStreamingCompression bReturn = m_xSco.License( "Your license string goes here" ) If ( bReturn = False ) Then Call MsgBox( "Xceed Streaming Compression Library is not licensed for distribution!!" ) End If`

Parameters

Parameter	Description
sLicense	Provide your license key here. Both registered users and trial version users have a license key. This key can be found by selecting the Programs -> Xceed Components -> Xceed Component Licenser menu item. Trial version keys are time-limited and will not work after the trial period has ended.

Return values

Returns True if the license key was accepted; False if the license key was invalid.

Remarks

The License method is required because methods such as CreateObject() and CoCreateInstance() do not cooperate with the licensing scheme provided by IClassFactory2.

Declaration (DXceedStreamingCompression)	Copy Code
`HRESULT License( [in] BSTR sLicense, [out,retval] VARIANT_BOOL* pbSucceeded )`

Declaration (IXceedStreamingCompression)	Copy Code
`HRESULT License( [in] BSTR sLicense, [out,retval] BOOL* pbSucceeded )`