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<p class="MsoNormal"><span lang="EN-GB">Hi all,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">I’m having a problem using win32print to read data back from a printer.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">I’m developing a kiosk and I need to talk to a zebra (KR403 specifically) printer. I’m doing so using ZPL instructions sent directly to the printer. There is a library called “zebra” that abstracts away most low level
stuff.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Sending ZPL instructions to the printer works like a charm, I can print and format everything as needed. However, there are some ZPL instructions that actually return a value from the printer, such as ~HS (Host Status
Return) or ^HH (Configuration Label Return). Specifically, I need to know the “paper low” and “paper out” status of the printer. I found out that the zebra library does not support this currently.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">I looked into it, and found that zebra uses win32print to issue the commands:<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-GB"> </span>win32print.StartPagePrinter(hPrinter)<o:p></o:p></p>
<p class="MsoPlainText"> win32print.WritePrinter(hPrinter, commands)<o:p></o:p></p>
<p class="MsoPlainText"> win32print.EndPagePrinter(hPrinter)<o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">But there still seems to be no way to read data back from the printer using win32print. Tim Golden advised me to look into the ReadPrinter() function
<a href="http://msdn.microsoft.com/en-us/library/windows/desktop/dd162895(v=vs.85).aspx">
http://msdn.microsoft.com/en-us/library/windows/desktop/dd162895(v=vs.85).aspx</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">However, this function is not (yet) implemented in win32print.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Honestly, I’m too new at Python to start adding to win32print myself, so I was hoping someone has maybe already looked into this, or has an alternative way of finding out the paper low/paper out statuses.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Thanks for any help or advice anyone can give me.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Erik<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
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