CODEWITHSUNDEEP
c++qtprinting
Guilherme Bernal
Guilherme Bernal

Reputation: 8303

Qt is unable to detect printers on Windows

I'm using Qt for a project (Qt 5.0.2, precompiled and downloaded from qt-project.org) on Windows 7 (32-bit) and I'm having trouble trying to print a document.

qDebug() << QPrinterInfo::availablePrinters().size(); // 0

I'm able to print as PDF and I tested the same executable in other computers, it works just well. I do have printers installed and I can print normally from any other program such as notepad or Word. Any clue on why is it returning an empty list? I can't find this behavior documented anywhere, is this a Qt bug?

Upvotes: 5

Views: 2076

Answers (2)

Eugene Malashkin
Eugene Malashkin

Reputation: 161

When you deploy your Qt application, you should put 

[your Qt application]\printsupport\windowsprintersupport.dll

The library windowsprintersupport.dll should be taken from

[Qt path]\[platform]\plugins\printsupport

P.S. The first answer is almost correct, except path's names.

Upvotes: 8

Pavel Strakhov
Pavel Strakhov

Reputation: 40502

May be your application cannot find plugins which allow printing facilities (printingsupport directory must be in execution directory from qt the bin\plugins directory).

This answer is moved from AnatolyS' comment.

Upvotes: -2

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