| Const | Description | Value (Hex/Decimal) |
|---|---|---|
| ACAP_XFERMECH | Defines the data transfer mechanism for audio data | $1202 (4610) |
| CAP_ALARMS | Controls and queries alarm conditions on the scanner | $1018 (4120) |
| CAP_ALARMVOLUME | Sets the volume of the scanner's audible alarms | $1019 (4121) |
| CAP_AUTHOR | Specifies the author information | $1000 (4096) |
| CAP_AUTOFEED | Enables the scanner to automatically feed the next page after a scan | $1007 (4103) |
| CAP_AUTOMATICCAPTURE | Enables the scanner to automatically capture images without user interaction | $101A (4122) |
| CAP_AUTOMATICSENSEMEDIUM | Enables automatic detection of the document size and type | $103B (4155) |
| CAP_AUTOSCAN | Enables automatic scanning of pages as they are fed | $1010 (4112) |
| CAP_BATTERYMINUTES | Reports the estimated remaining battery life in minutes | $1032 (4146) |
| CAP_BATTERYPERCENTAGE | Reports the estimated remaining battery life as a percentage | $1033 (4147) |
| CAP_CAMERAENABLED | Enables or disables the digital camera functionality | $1036 (4150) |
| CAP_CAMERAORDER | Specifies the order in which multiple cameras are used | $1037 (4151) |
| CAP_CAMERAPREVIEWUI | Enables or disables the preview UI for a digital camera | $1021 (4129) |
| CAP_CAMERASIDE | Selects which side of a digital camera (e.g., front or back) is active | $1034 (4148) |
| CAP_CAPTION | Adds a caption or annotation to the scanned document | $1001 (4097) |
| CAP_CLEARPAGE | Ejects or discards the current page from the scanner | $1008 (4104) |
| CAP_CUSTOMDSDATA | Allows the application to exchange custom data with the scanner | $1015 (4117) |
| CAP_CUSTOMINTERFACEGUID | Provides a GUID for a custom UI extension | $103C (4156) |
| CAP_DEVICEEVENT | Reports specific events from the scanner, such as a paper jam | $1022 (4130) |
| CAP_DEVICEONLINE | Reports whether the scanner device is online and ready for use | $100F (4111) |
| CAP_DEVICETIMEDATE | Retrieves or sets the scanner's device-specific time and date | $101F (4127) |
| CAP_DOUBLEFEEDDETECTION | Enables or disables the double-feed detection feature | $103F (4159) |
| CAP_DOUBLEFEEDDETECTIONLENGTH | Sets the document length threshold for double-feed detection | $1040 (4160) |
| CAP_DOUBLEFEEDDETECTIONRESPONSE | Defines the scanner's response when a double-feed is detected | $1042 (4162) |
| CAP_DOUBLEFEEDDETECTIONSENSITIVITY | Adjusts the sensitivity of the double-feed detection sensor | $1041 (4161) |
| CAP_DUPLEX | Indicates if the scanner supports duplex (double-sided) scanning | $1012 (4114) |
| CAP_DUPLEXENABLED | Enables or disables duplex scanning on a duplex-capable scanner | $1013 (4115) |
| CAP_ENABLEDSUIONLY | Forces the TWAIN UI to be shown even if no specific settings are requested | $1014 (4116) |
| CAP_ENDORSER | Controls the endorser or imprinter on the scanner | $1016 (4118) |
| CAP_EXTENDEDCAPS | Provides a list of extended capabilities not defined in the core TWAIN standard | $1006 (4102) |
| CAP_FEEDERALIGNMENT | Controls the alignment of pages as they are fed into the scanner | $102D (4141) |
| CAP_FEEDERENABLED | Enables the use of the automatic document feeder (ADF) | $1002 (4098) |
| CAP_FEEDERLOADED | Detects if the document feeder is loaded with pages | $1003 (4099) |
| CAP_FEEDERORDER | Specifies the order in which pages are fed from the document feeder | $102E (4142) |
| CAP_FEEDERPOCKET | Directs the scanned page to a specific output pocket | $103A (4154) |
| CAP_FEEDERPREP | Prepares the document feeder for the next scan | $1039 (4153) |
| CAP_FEEDPAGE | Feeds the next page into the scanning position | $1009 (4105) |
| CAP_IMAGEADDRESSENABLED | Enables or disables image addressing capabilities, such as barcodes | $1050 (4176) |
| CAP_INDICATORS | Controls the display of status indicators on the scanner's hardware | $100B (4107) |
| CAP_INDICATORSMODE | Sets the display mode for the scanner's indicators | $1044 (4164) |
| CAP_JOBCONTROL | Manages job-related controls for multi-document scanning sessions | $1017 (4119) |
| CAP_LANGUAGE | Sets the language for the scanner's user interface and messages | $102C (4140) |
| CAP_MAXBATCHBUFFERS | Specifies the maximum number of images the scanner can hold in its buffer | $101E (4126) |
| CAP_MICRENABLED | Enables or disables Magnetic Ink Character Recognition (MICR) | $1038 (4152) |
| CAP_PAPERDETECTABLE | Indicates if the scanner can detect the presence of paper in the feeder or on the platen | $100D (4109) |
| CAP_PAPERHANDLING | Controls various aspects of paper handling, such as front or back feed | $1043 (4163) |
| CAP_POWERSAVETIME | Sets the time delay before the scanner enters a power-save state | $1046 (4166) |
| CAP_POWERSUPPLY | Reports the status of the scanner's power supply (e.g., AC, battery) | $1020 (4128) |
| CAP_PRINTER | Controls the printer or endorser functionality on the scanner | $1026 (4134) |
| CAP_PRINTERCHARROTATION | Sets the rotation of characters for the printer | $1047 (4167) |
| CAP_PRINTERENABLED | Enables or disables the physical printer on the scanner | $1027 (4135) |
| CAP_PRINTERFONTSTYLE | Sets the font style for the printer, such as bold or italic | $1048 (4168) |
| CAP_PRINTERINDEX | Retrieves or sets the current index or counter for the printer | $1028 (4136) |
| CAP_PRINTERINDEXLEADCHAR | Sets the leading character for the printer index | $1049 (4169) |
| CAP_PRINTERINDEXMAXVALUE | Sets the maximum value for the printer's index counter | $104A (4170) |
| CAP_PRINTERINDEXNUMDIGITS | Sets the number of digits to use for the printer's index | $104B (4171) |
| CAP_PRINTERINDEXSTEP | Sets the increment step for the printer's index counter | $104C (4172) |
| CAP_PRINTERINDEXTRIGGER | Defines when the printer's index counter is incremented | $104D (4173) |
| CAP_PRINTERMODE | Sets the printing mode, such as stamping or endorsing | $1029 (4137) |
| CAP_PRINTERSTRING | Specifies the string of characters to be printed on the page | $102A (4138) |
| CAP_PRINTERSTRINGPREVIEW | Shows a preview of the text that will be printed | $104E (4174) |
| CAP_PRINTERSUFFIX | Specifies a suffix to be appended to the printed string | $102B (4139) |
| CAP_PRINTERVERTICALOFFSET | Adjusts the vertical position of the printed text | $1045 (4165) |
| CAP_REACQUIREALLOWED | Indicates if the application can re-acquire an image from the buffer | $1030 (4144) |
| CAP_REWINDPAGE | Rewinds the current page to the feeder's input tray | $100A (4106) |
| CAP_SEGMENTED | Enables or disables the segmented scanning mode for cameras | $1035 (4149) |
| CAP_SERIALNUMBER | Retrieves the serial number of the scanning device | $1024 (4132) |
| CAP_SHEETCOUNT | Reports the total number of sheets that have been scanned | $104F (4175) |
| CAP_SUPPORTEDCAPS | Lists all the capabilities supported by the scanner | $1005 (4101) |
| CAP_SUPPORTEDCAPSSEGMENTUNIQUE | Provides a list of unique capabilities supported by the scanner segment | $103D (4157) |
| CAP_SUPPORTEDDATS | Lists the Data Types (DATs) supported by the scanner | $103E (4158) |
| CAP_THUMBNAILSENABLED | Enables the generation of thumbnail images for preview | $1011 (4113) |
| CAP_TIMEBEFOREFIRSTCAPTURE | Sets the delay before the first image is captured in an automatic session | $101B (4123) |
| CAP_TIMEBETWEENCAPTURES | Sets the delay between successive image captures in an automatic session | $101C (4124) |
| CAP_TIMEDATE | Retrieves the scanner s internal time and date settings | $1004 (4100) |
| CAP_UICONTROLLABLE | Determines if the scanner's user interface (UI) can be controlled by the application | $100E (4110) |
| CAP_XFERCOUNT | Specifies the number of images to be transferred from the scanner to the application | $0001 (1) |
| ICAP_AUTOBRIGHT | Enables or disables automatic brightness adjustment | $1100 (4352) |
| ICAP_AUTODISCARDBLANKPAGES | Enables the automatic discarding of blank pages during scanning | $1134 (4404) |
| ICAP_AUTOMATICBORDERDETECTION | Enables or disables automatic border detection and cropping | $1150 (4432) |
| ICAP_AUTOMATICCOLORENABLED | Enables or disables automatic color mode detection | $1159 (4441) |
| ICAP_AUTOMATICCOLORNONCOLORPIXELTYPE | Specifies the pixel types for color and non-color pages in an automatic mode | $115A (4442) |
| ICAP_AUTOMATICCROPUSESFRAME | Specifies if automatic cropping should use the defined frame | $1157 (4439) |
| ICAP_AUTOMATICDESKEW | Enables or disables automatic deskewing of the image | $1151 (4433) |
| ICAP_AUTOMATICLENGTHDETECTION | Enables or disables automatic detection of document length | $1158 (4440) |
| ICAP_AUTOMATICROTATE | Enables or disables automatic rotation of the image | $1152 (4434) |
| ICAP_AUTOSIZE | Enables or disables automatic document size detection | $1156 (4438) |
| ICAP_BARCODEDETECTIONENABLED | Enables or disables the detection of barcodes on a document | $1137 (4407) |
| ICAP_BARCODEMAXRETRIES | Sets the maximum number of times the scanner will retry barcode detection | $113C (4412) |
| ICAP_BARCODEMAXSEARCHPRIORITIES | Sets the maximum number of barcode types to search for | $1139 (4409) |
| ICAP_BARCODESEARCHMODE | Defines the search mode for barcode detection (e.g., horizontal, vertical) | $113B (4411) |
| ICAP_BARCODESEARCHPRIORITIES | Sets the order of priority for searching barcode types | $113A (4410) |
| ICAP_BARCODETIMEOUT | Sets the timeout for barcode detection | $113D (4413) |
| ICAP_BITDEPTH | Sets the number of bits per pixel for the image | $112B (4395) |
| ICAP_BITDEPTHREDUCTION | Controls the method for reducing the bit depth of the image | $112C (4396) |
| ICAP_BITORDER | Sets the bit order for pixel data transfer | $111C (4380) |
| ICAP_BITORDERCODES | Lists the supported bit order codes | $1126 (4390) |
| ICAP_BRIGHTNESS | Sets the brightness level of the scanned image | $1101 (4353) |
| ICAP_CCITTKFACTOR | Sets the CCITT K-factor for Group 4 compression | $111D (4381) |
| ICAP_COLORMANAGEMENTENABLED | Enables or disables color management for the scan | $115B (4443) |
| ICAP_COMPRESSION | Sets the image compression format | $0100 (256) |
| ICAP_CONTRAST | Sets the contrast level of the scanned image | $1103 (4355) |
| ICAP_CUSTHALFTONE | Specifies a custom halftone pattern for black-and-white images | $1104 (4356) |
| ICAP_EXPOSURETIME | Sets the exposure time for the scanner's light source | $1105 (4357) |
| ICAP_EXTIMAGEINFO | Specifies the extended image information to be acquired | $112F (4399) |
| ICAP_FEEDERTYPE | Specifies the type of feeder being used (e.g., roller, flatbed) | $1154 (4436) |
| ICAP_FILMTYPE | Specifies the film type for film scanning | $115F (4447) |
| ICAP_FILTER | Sets a color filter to be used during the scan | $1106 (4358) |
| ICAP_FLASHUSED | Indicates if the flash was used during image capture | $1107 (4359) |
| ICAP_FLASHUSED2 | Reports which flash was used in a multi-flash system | $1146 (4422) |
| ICAP_FLIPROTATION | Combines image flipping and rotation | $1136 (4406) |
| ICAP_FRAMES | Defines the cropping area for the image | $1114 (4372) |
| ICAP_GAMMA | Sets the gamma correction value for the image | $1108 (4360) |
| ICAP_HALFTONES | Lists the supported halftone patterns for the scanner | $1109 (4361) |
| ICAP_HIGHLIGHT | Adjusts the highlight level of the image | $110A (4362) |
| ICAP_ICCPROFILE | Manages the International Color Consortium (ICC) color profile | $1155 (4437) |
| ICAP_IMAGEDATASET | Provides a list of image data sets available from the scanner | $112E (4398) |
| ICAP_IMAGEFILEFORMAT | Sets the file format for image transfer (e.g., TIFF, JPEG) | $110C (4364) |
| ICAP_IMAGEFILTER | Applies a digital filter to the image to improve quality | $1147 (4423) |
| ICAP_IMAGEMERGE | Enables or disables the merging of multiple images into one | $115C (4444) |
| ICAP_IMAGEMERGEHEIGHTTHRESHOLD | Sets the height threshold for image merging | $115D (4445) |
| ICAP_JPEGPIXELTYPE | Defines the pixel type for JPEG compression | $1128 (4392) |
| ICAP_JPEGQUALITY | Sets the quality level for JPEG compression | $1153 (4435) |
| ICAP_JPEGSUBSAMPLING | Sets the JPEG color subsampling mode | $1161 (4449) |
| ICAP_LAMPSTATE | Controls the state of the scanner's lamp (on/off) | $110D (4365) |
| ICAP_LIGHTPATH | Selects the light path (e.g., reflected, transmissive) | $111E (4382) |
| ICAP_LIGHTSOURCE | Selects the light source to be used for scanning | $110E (4366) |
| ICAP_MAXFRAMES | Specifies the maximum number of frames that can be defined for a single scan | $111A (4378) |
| ICAP_MINIMUMHEIGHT | Sets the minimum height for an automatically cropped image | $1130 (4400) |
| ICAP_MINIMUMWIDTH | Sets the minimum width for an automatically cropped image | $1131 (4401) |
| ICAP_MIRROR | Flips the image horizontally or vertically | $1160 (4448) |
| ICAP_NOISEFILTER | Applies a noise reduction filter to the image | $1148 (4424) |
| ICAP_ORIENTATION | Sets the orientation of the scanned image (e.g., portrait, landscape) | $1110 (4368) |
| ICAP_OVERSCAN | Controls the overscan feature, which captures beyond the document's edges | $1149 (4425) |
| ICAP_PATCHCODEDETECTIONENABLED | Enables or disables patch code detection | $113F (4415) |
| ICAP_PATCHCODEMAXRETRIES | Sets the maximum number of times the scanner will retry patch code detection | $1144 (4420) |
| ICAP_PATCHCODEMAXSEARCHPRIORITIES | Sets the maximum number of patch code types to search for | $1141 (4417) |
| ICAP_PATCHCODESEARCHMODE | Defines the search mode for patch code detection | $1143 (4419) |
| ICAP_PATCHCODESEARCHPRIORITIES | Sets the order of priority for searching patch code types | $1142 (4418) |
| ICAP_PATCHCODETIMEOUT | Sets the timeout for patch code detection | $1145 (4421) |
| ICAP_PHYSICALHEIGHT | Reports the physical height of the scanner's platen | $1112 (4370) |
| ICAP_PHYSICALWIDTH | Reports the physical width of the scanner's platen | $1111 (4369) |
| ICAP_PIXELFLAVOR | Specifies the ordering of color data within a pixel | $111F (4383) |
| ICAP_PIXELFLAVORCODES | Lists the supported pixel flavor codes | $1127 (4391) |
| ICAP_PIXELTYPE | Defines the type of pixel data, such as black-and-white, grayscale, or color | $0101 (257) |
| ICAP_PLANARCHUNKY | Specifies the data format (planar or chunky) | $1120 (4384) |
| ICAP_ROTATION | Rotates the image in increments of 90 degrees | $1121 (4385) |
| ICAP_SHADOW | Adjusts the shadow level of the image | $1113 (4371) |
| ICAP_SUPPORTEDBARCODETYPES | Lists the barcode types supported by the scanner | $1138 (4408) |
| ICAP_SUPPORTEDEXTIMAGEINFO | Lists the extended image information capabilities supported by the scanner | $115E (4446) |
| ICAP_SUPPORTEDPATCHCODETYPES | Lists the patch code types supported by the scanner | $1140 (4416) |
| ICAP_SUPPORTEDSIZES | Lists the supported document sizes (e.g., A4, Letter) | $1122 (4386) |
| ICAP_THRESHOLD | Sets the threshold value for converting grayscale to black and white | $1123 (4387) |
| ICAP_TILES | Specifies the tiling of an image during transfer | $111B (4379) |
| ICAP_TIMEFILL | Specifies the fill color for areas outside the scanned frame | $112A (4394) |
| ICAP_UNDEFINEDIMAGESIZE | Enables scanning of documents of an undefined size | $112D (4397) |
| ICAP_UNITS | Sets the units of measurement for image dimensions | $0102 (258) |
| ICAP_XFERMECH | Defines the data transfer mechanism (e.g., native, memory, file) | $0103 (259) |
| ICAP_XNATIVERESOLUTION | Reports the native resolution of the scanner in the X-direction | $1116 (4374) |
| ICAP_XRESOLUTION | Sets the desired resolution for the scan in the X-direction | $1118 (4376) |
| ICAP_XSCALING | Sets the horizontal scaling factor for the image | $1124 (4388) |
| ICAP_YNATIVERESOLUTION | Reports the native resolution of the scanner in the Y-direction | $1117 (4375) |
| ICAP_YRESOLUTION | Sets the desired resolution for the scan in the Y-direction | $1119 (4377) |
| ICAP_YSCALING | Sets the vertical scaling factor for the image | $1125 (4389) |
| ICAP_ZOOMFACTOR | Sets the zoom factor for the image capture | $113E (4414) |