ScanningManager.Quit method

Closes the connection to ScanTools Plus Link Runtime and makes it available to other applications. After ScanningManager.Quit is called, no further events will be received.

NOTE: The Quit method should not be called unless the user is done scanning. Calling ScanningManager methods or properties immediately following a Quit may result in unpredictable ScanTools Plus Link Runtime behavior.

If the Quit method has been called, subsequent calls to any of the items listed below automatically attempts to regain the connection; additionally, the scanner must be reconfigured to scan .

ScanningManager.ActiveScanner property

ScanningManager.AutoConfigureScanner method

ScanningManager.ConfigureScanner method

ScanningManager.Diagnose method

ScanningManager.GetPortsWithScanners method

ScanningManager.Scan method

.NET Considerations

In the .Net environment, a solution interacts with the COM ScanningManager object thru a managed wrapper class (proxy) atop the COM object. .Net solutions instantiate this proxy which internally creates the COM ScanningManager object. The proxy manages the lifetime of the underlying COM object. When the proxy goes out of scope, the COM ScanningManager is still around because the proxy is waiting for garbage collection. Garbage collection is non-deterministic and in a lightly loaded system is usually performed when a program shuts down. Since the program is hanging onto the scarce connection, this is not a good situation. Solve this problem by calling the ScanningManager.Quit method before the proxy object goes out of scope.

A more robust way is to explicitly create a managed ScanningManager class that derives from or embeds the COM ScanningManager class. The managed class implements the IDisposable interface and/or the Dispose design pattern. The solution calls the ScanningManager.Quit method from the Dispose method

Valid

See Scanning Manager States and Valid Properties/Methods

See ScanningManager Events and Valid Properties/Methods

IDL

HRESULT Quit();

Exceptions

Scanning Services Exceptions