dev_open_window(1,1,400,400,‘blue‘,ThisHandle)create_bar_code_model([], [], BarCodeHandle)set_bar_code_param(BarCodeHandle,‘element_size_max‘,8)set_bar_code_param(BarCodeHandle,‘check_char‘,‘present‘)set_bar_code_param(BarCodeHandle,‘persistence‘,1)set_bar_code_param(BarCodeHandle,‘composite_code‘,‘none‘)set_bar_code_param(BarCodeHandle,‘meas_thresh‘,0.1)set_bar_code_param(BarCodeHandle,‘num_scanlines‘,10)set_bar_code_param(BarCodeHandle,‘min_identical_scanlines‘,2)set_bar_code_param(BarCodeHandle,‘max_diff_orient‘,10)set_bar_code_param(BarCodeHandle,‘element_height_min‘,8)set_bar_code_param(BarCodeHandle,‘stop_after_result_num‘,1)*read_image(img,‘C:/Users/IBM_ADMIN/Desktop/Halcon/2.jpg‘)*get_image_size (img, Width, Height)*dev_set_window_extents (0, 0, Width-1, Height-1)*find_bar_code(img,SymbolRegions,BarCodeHandle,‘auto‘,DecodedataStrings)*get_bar_code_result(BarCodeHandle,‘all‘,‘decoded_types‘,DecodedDataTypes)*dev_close_window()* open computer cameraopen_framegrabber (‘DirectShow‘, 1, 1, 0, 0, 0, 0, ‘default‘, -1, ‘gray‘, -1, ‘default‘, ‘default‘, ‘0‘, -1, -1, AcqHandle1)* open another USB camera*open_framegrabber (‘DirectShow‘, 1, 1, 0, 0, 0, 0, ‘default‘, -1, ‘gray‘, -1, ‘default‘, ‘default‘, ‘1‘, -1, -1, AcqHandle1)condition := trueset_window_param(ThisHandle,‘background_color‘,‘gray‘)*grab_image_start(AcqHandle1,-1000)while(condition)        *grab_image_async(BarImage,AcqHandle1, -1000)    grab_image (BarImage, AcqHandle1)    find_bar_code(BarImage,SymbolRegions,BarCodeHandle,‘auto‘,scannString)    if(|scannString| >= 1)        dev_display(BarImage)        disp_message(ThisHandle,scannString,‘window‘,12,12,‘blue‘,‘false‘)        disp_continue_message(ThisHandle,‘black‘,‘true‘)        stop()        condition := false    endifendwhileclear_all_bar_code_models()close_all_framegrabbers()dev_close_window()