Windows programming question: printersettings.canduplex returns false for HL3189CDW

Aug 30, 2022
Probably an offbeat question.

I am writing a program in Visual Basic.NET. The recommended way to determine if a printer has duplex capabilities is to check the following value


which should return TRUE if the printer can duplex print, or FALSE if not. Unfortunately I am getting a value of FALSE when checking the printer properties. When accessing the printer using any commercial software, such as MS Office applications or Adobe Acrobat, no problems with duplex printing, so I suspect that this code will not work with the printer/driver as shown. The printer is on a local network, not directly connected to the PC.


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