This is my first post on this website, can't seem to solve the problem.
How do I emulate key function Ctrl+B to a barcode so i can scan the barcode with a scanner without pressing Ctrl+B. I've tried reading the ASCII Control Codes ASCII control codes Please help me.
As one of your tags demonstrates, you are already aware of the code 128 symbology. You will want to use the code128A start code (103) and the same character as a lower case 'b' in code128B (66). Finally, after adding additional data, properly calculate the checksum and add it as well as the stop code (106). The following HTML illustrates:
<img
alt="103,{Start A}" title="103,{Start A}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AC9gAMEAkBQ+aMgAAAAASUVORK5CYII=" width="20" height="40"><img
alt=" 66,A:{STX},B:{b}" title=" 66,A:{STX},B:{b}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AG8gAQEAkGqGy8gAAAAASUVORK5CYII=" width="20" height="40"><img
alt=" 52,A:{T},B:{T}" title=" 52,A:{T},B:{T}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ACOgAOkAxNCxwt0AAAAASUVORK5CYII=" width="20" height="40"><img
alt=" 37,A:{E},B:{E}" title=" 37,A:{E},B:{E}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AHLgAccBU7KPeu8AAAAASUVORK5CYII=" width="20" height="40"><img
alt=" 51,A:{S},B:{S}" title=" 51,A:{S},B:{S}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ACLgAScBA3yI80wAAAAASUVORK5CYII=" width="20" height="40"><img
alt=" 52,A:{T},B:{T}" title=" 52,A:{T},B:{T}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ACOgAOkAxNCxwt0AAAAASUVORK5CYII=" width="20" height="40"><img
alt=" 24,A:{8},B:{8}" title=" 24,A:{8},B:{8}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ABZgAI8Ad3Mh6bwAAAAASUVORK5CYII=" width="20" height="40"><img
alt="106,{Stop}"title="106,{Stop}"src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA0AAAABAQMAAAA/57ZEAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADigARMA2dpJzT8AAAAASUVORK5CYII=" width="20" height="40">To test, open up Wordpad or any word processor that uses 'Ctrl-B' to switch bold text on and off. Scan a printed copy of the barcode in the snippet. You should see the text "TEST" alternate between bold and plain styles each time you scan.
<img
alt="103,{Start A}" title="103,{Start A}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AC9gAMEAkBQ+aMgAAAAASUVORK5CYII=" width="12" height="33"><img
alt=" 66,A:{STX},B:{b}" title=" 66,A:{STX},B:{b}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AG8gAQEAkGqGy8gAAAAASUVORK5CYII=" width="12" height="33"><img
alt=" 66,A:{STX},B:{b}" title=" 66,A:{STX},B:{b}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AG8gAQEAkGqGy8gAAAAASUVORK5CYII=" width="12" height="33"><img
alt="106,{Stop}"title="106,{Stop}"src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA0AAAABAQMAAAA/57ZEAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADigARMA2dpJzT8AAAAASUVORK5CYII=" width="12" height="33">来源：https://stackoverflow.com/questions/45222061/how-do-i-emulate-key-function-ctrl-b-to-a-barcode