GdPictureImaging.TwainUnloadSourceManager Method

Unloads the Data Source Manager and release the TWAIN32.DLL.

public Boolean TwainUnloadSourceManager(
    IntPtr HANDLE
);

Visual Basic

Public Function TwainUnloadSourceManager(
    ByVal HANDLE As IntPtr
) As Boolean

Parameters

Parameters	Description
HANDLE	A Window Handle IE: Me.Handle. In most applications you can use nothing but on Citrix and WTS, this must be a top-level window or a child of a top level window.

Returns

True if success, else False -> Use TwainGetLastResultCode() and TwainGetLastConditionCode() functions for diagnosing the error.

This will fail if the Source Manager is open.

If success, the twain state must be 1 (TWAIN_PRESESSION).

To get the TWAIN state, use the TwainGetState() function.