This function retrieves the bit depth supported by the scan device
Parameters
| Name | Explanation |
|---|---|
| AppHandle | The application handle retrieved by IKScanInitialize |
| SrcHandle | The scan device handle retrieved by IKScanOpenDS or 0 |
| ScanDsName | The name of the datasource (scan device) Required when the SrcHandle is 0 |
| PixelType | The pixel type (0: Black and White 2 bit, 1: Grayscale, 2: RGB color, 3: Palette color) |
| List | An array containing the bit depths supported by the
scan device In C++Builder, pass the pointer to the first element in the array. In Delphi, the arguments are returned in the first element of the array List[0]. |
| ListNum | The number of elements in the List array |
Return Value
When the List and ListNum parameters are set:
The IKScanGetBitDepth function's return value will indicate the
number of supported bit depth types for the specified PixelType. If
0 is returned this would indicate an error and you can confirm the
type of error using the ErrorStatus. Depending on the datasource
(scan device) the pixel type does not matter and all supported bit
depths will be retrieved. In such cases the return value will be
greater than the actual supported number of bit depths for a given
pixel type.
When the List is set to Null or the ListNum is set to 0
The IKScanGetBitDepth function's return value will indicate the
number of elements that need to be used in the List array
Explanation
The IKScanGetBitDepth function retrieves the bit depth supported by the scan device. If the SrcHandle is being used with the value retrieved by the IkScanOpenDS then no other application can use the opened scan device until it has been closed. When SrcHandle is 0 and the ScanDsName is blank, then it is necessary to execute the IKScanSelect function. Please make sure to set a value in the PixelType parameter that is supported by the datasource.