Dymo Pnp on mac os

I bought a Dymo PNP label maker from China. 

The package says it's designed for PC.

But I found a Mac os App when I connect the label maker to Mac mini.

There will be an USB drive appear when the PNP is connected. 

The PNP will just work when you print from the app. No driver is needed. It shouldn't. Because PNP means Plug and Play.

The app comes with the PNP is an old version. There is a button on the app which you can click to download the latest version. In my case, the newer version is DYMO Label v.8. The old version is DYMO Label Light 

The latest version requires installation, because it will install printer driver along with Dymo Label v8

I found that Dymo Label v8 doesn't take Chinese input. But you can copy and paste. It has quite a few build in clip art. It's much more power than the light version. 

But I found the light version is good enough for me.

--

Feng

Objective C append bytes

 const char *bytes = [jsonData bytes];

        

        NSMutableData *data = [[NSMutableData alloc] init];

        

        for (int i = 0; i < [jsonData length]; i++){

            unsigned char c = (unsigned char)bytes[i];

            if (c < 32 && c != 10 && c != 14){

                //Do nothing

            }else{

                [data appendBytes:&c length:1];

            }

        }

--

Feng