Module scan

Available on crate features scan and api-12 only.

Structs§

Scan_ErrorCode: Defines error codes.
Scan_PictureScanProgress: Indicates the progress of scanning a picture by the scanner.
Scan_ScannerDevice: Indicates scanner device information.
Scan_ScannerOptions: Indicates all parameter options for one scanner.

OH_Scan_CancelScan^⚠: This API allows the scanner to cancel the scan.
OH_Scan_CloseScanner^⚠: This API is used to close the connected scanner device.
OH_Scan_Exit^⚠: This API can be used to exit the scanning service, free the Scan Framework Memory, and unregister the callback for scanner discover.
OH_Scan_GetPictureScanProgress^⚠: This API can get the progress of the scanner scanning the picture.A non-null value must be passed in, and the scan progress will be written to the structure to which the pointer points.
OH_Scan_GetScannerParameter^⚠: This API can be used to get a list of options that can be set by the scanner. The returned struct pointer points to memory that is automatically freed when OH_Scan_Exit, and only one copy will be stored in memory for each model.
OH_Scan_Init^⚠: This API checks and pulls up the scan service, initializes the scan client, and establishes a connection to the scan service.
OH_Scan_OpenScanner^⚠: This API connects to scanner devices.
OH_Scan_SetScannerParameter^⚠: This API can be used to set one of the scanner’s option parameters. The option and value passed in are obtained from OH_Scan_GetScannerParameter.
OH_Scan_StartScan^⚠: This API allows the scanner to start scanning.
OH_Scan_StartScannerDiscovery^⚠: This API starts discovering scanners, Register a callback to handle discovered scanner devices.

Scan_ScannerDiscoveryCallback: Scanner devices discovery callback, register by OH_Scan_StartScannerDiscovery. The memory to which the pointer points will be released when the callback function ends.