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  • Changing the default Twain device
  • Operating mode in the 64-bit applications
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Stored procedures
Allows you to find out and change the Twain device used by default. This default device will be used by all the Twain functions.
Note: To find out the list of all the Twain devices installed on the current computer, use TwainListSource.
Example
// Twain device used by default?
Trace("The device used by default is: " + TwainCurrentSource())
// Change the Twain device used by default
TwainCurrentSource("Logitech Camera")
Syntax

Changing the Twain device used by default Hide the details

<Result> = TwainCurrentSource(<Driver Name>)
<Result>: Boolean
  • True if the specified device was taken into account,
  • False otherwise. The corresponding error message is returned by ErrorInfo.
<Driver Name>: Character string (with quotes)
Name of the Twain device driver that must be used by default. This name must correspond to one of the names returned by TwainListSource.

Finding out the Twain device used by default Hide the details

<Result> = TwainCurrentSource()
<Result>: Character string
Name of driver of Twain device used by default.
Remarks

Changing the default Twain device

To change the Twain device used by default, you can:
  • use TwainCurrentSource.
  • display the list of Twain devices installed on the computer via TwainSelectSource. Then, the user will be able to choose the Twain device that will be used by default.

Operating mode in the 64-bit applications

In a 64-bit application, this function will automatically use the 64-bit Twain driver. The TWAIN cannot be used if this driver is not installed.
Components
WINDEVReports and Queries wd230std.dll
Minimum required version
  • Version 9
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