Example 6: Get all Brightness values |
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Example: Get all the brightness values of the Twain device (if device supports brightness setting)
#include "cdtwain.h" #include <iostream>
using namespace DTWAIN; using namespace std; // for <iostream>
int main( ) { // Initialize DTWAIN - return if initialization does not work DTwainInterface TI; if ( !TI.IsValid( ) ) return 0;
// Declare a Source and allow user to choose TWAIN source DTwainSource Source = DTwainSource::Select( ); if ( !Source.IsValid( ) ) return 0;
// Only do this if the number of brightness values > 0 // Get the brightness values DTwainDoubleArray BrightnessValues; Source.EnumBrightnessValues( BrightnessValues, false );
if ( ! BrightnessValues.empty( ) ) { // The values may be in the form of a range, so let's do some work and expand the // range into discrete values. We could have expanded the // values already when EnumBrightnessValues was called by supplying another argument, // but this code is done to illustrate the CopyArrayToRange function. if ( Source.IsCapContainerRange( DTWAIN_CV_ICAPBRIGHTNESS ) ) { // Create a temporary range from the returned BrightnessValues array, // and expand the range back into the BrightnessValues array DTwainDoubleRange( ).CopyArrayToRange( BrightnessValues ).Expand( BrightnessValues ); } // Now output the values (could be a lot!) DTwainDoubleArray::iterator start = BrightnessValues.begin( ); DTwainDoubleArray::iterator stop = BrightnessValues.end( ); while ( start != stop ) { cout << *start << endl; ++start; } } else { cout << "Your TWAIN driver does not support brightness setting" << endl; } }
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