Selecting the TWAIN Source
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A TWAIN Source must be selected to acquire an image. The Source is analogous to the actual device that will ultimately acquire the image. A TWAIN Source is denoted by the DTWAIN_SOURCE data type. The Source can be selected either by the user using the TWAIN Select Source dialog box, or programmatically.
To select and open a Source, the following functions can be used:
The following functions can be used to select a Source, and optionally open the Source if the source is selected. Please note that selecting a Source and opening the selected Source are two separate operations: DTWAIN_SelectDefaultSourceWithOpen DTWAIN_SelectSourceByNameWithOpen The following functions allows a TWAIN "Select Source" dialog to be displayed with various display options such as positioning of the dialog on the screen, Source names appear sorted, etc. |