My apps do label printing under Windows OS the usual way, i.e.
g = PrinterSetup.OpenPrinter(MySetupString)
and then g.DrawText or g.DrawPicture.
This works fine for Dymo LabelWriters and for Jadens printers.
The Jadens has insufficient resolution, however, and Dymos without DRM are expensive and becoming rare, so I want to use a 300DPI Comer CX418HD.
After installing the manufacturer’s driver I can successfully print a test page to the Comer using the Windows control panel, but when I try to print from my Xojo apps (after having done Page Setup to initialize my setup string) nothing at all happens. The code executes, OpenPrinter returns a Graphics object, but the printer makes no indication of having received any data when I call DrawPicture or DrawText.
Why he no work?
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