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GetSelectedDevice Method
Summary
Gets a string that contains the ID for currently selected device.
Syntax
Return Value
String that contains the ID for currently selected device. If an error occurs, an exception is thrown.
Remarks
Call this function to get a string that represents the ID for the currently selected device.
WIA does not have a default device selection. In order for this function to succeed be sure to call either SelectDeviceDlg or SelectDevice before calling this method.
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Note: |
If you are using the AcquireSimple method to automatically acquire from your device then it is not necessary to call either of the two mentioned functions above before calling the GetSelectedDevice since AcquireSimple method internally calls the SelectDeviceDlg method and this will assure you have a device currently selected. |
Example
Refer to WiaSession.EnumDevices
Requirements
