SetScanCapability Method

Example-VB Example-VC++

Sets various scanner options, based on values retrieved by the GetScanCapability method.

Available With

Ö Imaging for Windows Professional Edition V1.0, V1.1, and V2.0
Imaging for Windows 95 and 98
Imaging for Windows NT 4.0

Applies To

Image Scan control

Syntax

object.SetScanCapability Capability_ID,Capability_Value

Arguments

Parameter Data Type Description

Capability_ID Integer One of the scanner capabilities listed in the table below
Capability_Value Variant Sets the following capability values

Capability_ID
Name		 Description Capability Value Data Type

100
Image Type		 Sets the Image Type One of the following values:
1 - black and white
2 - grayscale 16
4 - grayscale 256
8 - color 256 palletized
16 - true color 24-bit RGB
32 - color 16-bit palettized		 Integer
101
X Resolution		 Sets the X Resolution. Use the Minimum Resolution, Maximum Resolution, and Resolution Step Capability Ids of the GetScanCapability  method to get valid values.

Note: This capability also sets the Y resolution, symmetric with the X resolution. If you wish to set X and Y resolutions independently, you must first set the X resolution, and then the Y resolution.

 A value between maximum and minimum resolution. Long
102
Brightness Mode		 Sets Brightness Mode to Normal or Automatic. If you set this value to 1 (Normal), you must also set a Brightness value. One of the following values:
1 - Normal
2 - Automatic		 Integer
103
Brightness		 Sets the brightness when Brightness mode is 1 (Normal). Use the Minimum Brightness, Maximum Brightness, and Brightness Step Capability Ids of the GetScanCapability  method to obtain valid values. A value between maximum and minimum brightness Long
104
Contrast Mode		 Sets Contrast Mode to Normal or Automatic. If you set this value to 1 (Normal), you must also set a Contrast value. One of the following values:
1 - Normal
2 - Automatic		 Integer
105
Contrast		 Sets the contrast when Contrast mode is 1 (Normal). Use the Minimum Contrast, Maximum Contrast, and Contrast Step Capability Ids of the GetScanCapability  method to obtain valid values. A value between maximum and minimum contrast. Long
106
Image Layout		 Sets four values (in inches) that define the image layout - Left, Top, Height, and Width.

Use the Maximum Height and Maximum width capability Ids of the GetScanCapability  method to obtain valid values.

 An array of 4 values (inches), set in the following order:

   Left start of scan offset
  Top start of scan offset
  Width of scan
  Height of scan

 An array of Single values
107
Scan Mode		 Sets the Scan Mode to Flatbed or ADF (Automatic Document Feeder). One of the following values:
1 - Flatbed
2 - ADF		 Short
109
Y Resolution		 Sets the Y Resolution. Use the Minimum Resolution, Maximum Resolution, and Resolution Step Capability Ids of the GetScanCapability  method to get valid values.

Note: This capability overrides the Y value set by the X Resolution Capability ID. If you wish to set X and Y resolutions independently, you must first set the X resolution, and then the Y resolution.

 A value between maximum and minimum resolution Long

Remarks

Before you set a capability, you should call the GetScanCapability method.

The scanner must be open when this call is made, or an error is returned.

If a capability is not supported, a VT_Error is returned.