Qt Cannot open include file: 'QPrinter'

Question

I am new to Qt. Downloaded source code for a Qt application of SourceForge, and tried to build and run it. After working through a few similar problems by adding QT += statements to .pro files, I am stuck on this one:

On attempting to build in Qt Creator, I get errors saying

error: C1083: Cannot open include file: 'QPrinter': No such file or directory

I tried adding QT += printsupport to the .pro file, cleaning, and rebuilding, but that gives this error

Error: dependent '..\..\..\..\..\..\..\..\..\..\..\Qt\Qt5.1.1\5.1.1\msvc2012_64\include\QtPrintSupport\qtprintsupportglobal.h' does not exist."

When I go to C:\Qt\Qt5.1.1\5.1.1\msvc2012_64\include\QtPrintSupport, qtprintsupportglobal.h IS THERE!

There is no project-specific path that I need to edit, is there? — Matt M, Oct 02 '13 at 20:51
Delete the shadow build directory and build again, just in case. — Kuba hasn't forgotten Monica, Oct 02 '13 at 23:25

score 22 · Answer 1 · answered Nov 12 '13 at 09:55

22

You have to add QPrinter Support to your project's .pro file:

QT += printsupport

answered Nov 12 '13 at 09:55

Jamal Khan

471
2
5

score 6 · Answer 2 · answered Jul 21 '14 at 11:08

6

In my case the solution was to

Delete the shadow build directory and build again

after adding printsupport, as @KubaOber suggests in the comments.

answered Jul 21 '14 at 11:08

Pavel

698
1
11
20

score 1 · Answer 3 · answered Feb 12 '21 at 04:08

1

Because QMake will eventually be dropped in favor of CMake, here's the solution for CMake users:

Pass PrintSupport to the find_package call, to the right side of COMPONENTS, like in this example:

find_package(Qt5 ${QT5_MIN_VERSION} REQUIRED COMPONENTS Core Gui Qml QuickControls2 PrintSupport)

answered Feb 12 '21 at 04:08

Javier Cordero

556
7
14

1

For Qt6 and CMake see here: https://doc.qt.io/qt-6/qtprintsupport-index.html – mululu Jan 22 '22 at 12:31

score 0 · Answer 4 · answered Jul 12 '20 at 13:08

0

Easy mistake to make: After you edit your .pro

QT       += printsupport

You have to SAVE the file before your .h will be aware of it.

answered Jul 12 '20 at 13:08

frozenjim

746
5
11

Qt Cannot open include file: 'QPrinter'

4 Answers4

Linked