User manual

171

Setting message notification

WndProc()

WM_CREATE

OBRSetScanningNotification

( OBR_MESSAGE, hWnd );

WM_CLOSE

OBROpen( NULL, 0 );

OBRClose();

WM_OBR_SCANNING

WM_CLOSE

Data captured by OBRGets

End

Yes

OBR_SUCCESS

Value other than

OBR_SUCCESS

Process of other message

Figure 5.1 Flowchart

1. Notification mode for scanning completion is set to the message output with

OBRSetScanningNotification func

tion. At the same time, window handle of the destination

which the message is sent to is specified.

2. After opening the scanner with OBROpen func

tion, the flow waits until a scanning completion

notification message is issued.

3. After receiving the message, the wParam parameter of the message is checked for its value. If

scanning is succeeded, data output to each output destination will be processed.

4. Carry out OBRClose funct

ion to close the scanner.