DTWAIN_RangeGetCount
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The DTWAIN_RangeGetCount function gets the number of items that the DTWAIN_RANGE defines.
LONG DTWAIN_RangeGetCount ( DTWAIN_RANGE Range );
Parameters Range A valid DTWAIN_RANGE type.
Return Values If the function succeeds, the number of values defined by the DTWAIN_RANGE is returned. If the function fails, DTWAIN_FAILURE1 is returned.
Comments The DTWAIN_RangeGetCount function gets the number of items that the DTWAIN_RANGE Range defines. The minimum, maximum, and step size values defined by Range are used to compute the number of values. For example if the DTWAIN_RANGE has the following characteristics:
Minimum Value = -10 Maximum Value = 10 Step size = 2
The total number of values that will be returned by DTWAIN_RangeGetCount will be 11, since the range encompasses the following values:
-10, -8, -6, -4, -2, 0, 2, 4, 6, 8, 10
There are 11 values defined by the range (-10, 10) with a step of 2.
This function can be used to get the number of values that will be generated when the DTWAIN_RangeExpand function is called.
TWAIN State Transitions None.
Prerequisite Function Call(s)
See Also |