QPrinter problem QT 5.9.2 and 5.8

[Krasnoiark]

Hi everyone,

I am a beginner in QT, And I have been stuck for weeks searching and searching everywhere but I can't resolve it.
I am only trying to use QPrinter in order to print a QTextDocument. I am working on QT 5.8 (I have switch to 5.9.2 still same problem)

I have added to my .pro file QT += printsupport
And included where I want to use QPrinter : #include <QtPrintSupport/QtPrintSupport>
(I have tryed including all of the classes).
The result is that I get undefined reference to `_imp___ZN8QPrinterD1Ev'.
When I manualy add #define QT_NO_PRINTER I get 'Orientation' in 'class QPrinter' does not name a type QPrinter::Orientation orientation() const;

I have tryed everything. Please can someone help me, I need PDF extraction and landscape oriantation for my QTextDocument.

[SGaist]

Hi and welcome to devnet,

What OS are you running on ?
What compiler are you using ?
Did you re-run qmake after modifying the QT variable content ?

[Krasnoiark]

Hi, I am running on Windows 10 and Ubuntu 17 LTS.
I am using Mingw32 compiler.
I have run qmake after adding my QT variable, I have also deleted the build file, re-run the qmake and re built and same errors.

[Krasnoiark]

This is my code and the .pro file

[mrjj]

Hi
QT += printsupport

and
#include <QPrinter>

does it for me on Qt 5.9/win 10.

[Krasnoiark]

Hi
Thanks for the response but it tells me that QPrinter is no such file or directory. Won't let me compile.

[jsulm]

@Krasnoiark How did you install Qt?

[Krasnoiark]

I went on the QT website, downloaded the open source installer.
Downloaded and Installed QT 5.9.2 MinGW 5.3.0 32 bit. And I checked all the tools.

[mrjj]

@Krasnoiark
That sounds pretty ok.

Can you try this default project and tell if it also gives errors?
https://www.dropbox.com/s/wxcdigflnwbeq4d/myprinter.zip?dl=0

Also, you are targeting Desktop, correct ?
Its not bare metal project or something like that?

[jsulm]

@Krasnoiark Most probably not the reason for the problem, but why do you add core and gui twice to QT?

[Krasnoiark]

It compiles and there is no errors

[mrjj]

@Krasnoiark
So i think your .pro or kit selection might be messed up.

This is a desktop app, correct?

[Krasnoiark]

Yes, this is a Desktop project and the project is a QTWidget project insite 2 other QT Sub-projects.

[mrjj]

Hmm
It does look fine with the kit.

It must be something with the pro file then

Since the test project worked and I assume you compiled that
exactly like this.

[Krasnoiark]

https://drive.google.com/file/d/0B3foRMnUz_jLM1FPTVZZb1U2LUE/view?usp=sharing

This is my .pro file

[ofmrew]

@mrjj I believe that once in the past you told me to try deleting the build folder. It has solved many of my problems, is it worth a try?

[jsulm]

@Krasnoiark You still add gui twice.
Do you have other Qt installations on your machine?

[mrjj]

@ofmrew
its always worth a try :) Especially when stuff are strange. Good call.

[Krasnoiark]

@ofmrew No I don't. All I have is QT 5.9.2 MinGW and the tools
.

I have tryed recompiling from scratch, it did not work.

[mrjj]

It seems not to be the pro file as
it is pretty basic and it could compile my project too.

And QPrinter is included in the installation as a default project works.

My best bet is that the
$$files(.cpp)
$$files(classes/.cpp)
$$files(gui/*.cpp) \

find something we dont expect and include.