Older to New Version of Qt

jugnu

If have run a code written written using Qt 4.2 in Qt 5.3 ,there are lot of compiler errors .For this do I have to install Qt 4.2

IamSumit

Hi and welcome to Qt devnet
You don't need
please look
"Porting Guide":http://qt-project.org/wiki/Transition_from_Qt_4.x_to_Qt5

Hope this helps.

jugnu

Thanks Sir,
But the error ":-1: error: [ui_mainwindow.h] Error -1073741515" persisits
How to remove it?

jugnu

Sir, I am new to Qt;

My project shows in build and run section :

Kit :- Desktop5
Deploy:- No deployement
compiler:- MinGw 4.8.2 32 bit

SGaist

Hi and welcome to devnet,

Since you are using widgets in your project, did you add

@QT += widgets@

in your pro file ?

jugnu

Yes sir, I have added

SGaist

Then, can you show the content of your pro file ?

jugnu

OTHER_FILES +=
qtc_packaging/debian_harmattan/rules
qtc_packaging/debian_harmattan/README
qtc_packaging/debian_harmattan/manifest.aegis
qtc_packaging/debian_harmattan/copyright
qtc_packaging/debian_harmattan/control
qtc_packaging/debian_harmattan/compat
qtc_packaging/debian_harmattan/changelog
../../Desktop/dm/dm.pro

HEADERS +=
mainwindow1.h
mainwindow2.h
firstmainwindow.h
mainwindow3.h
mainwindow4.h
mainwindow5.h

SOURCES +=
mainwindow1.cpp
mainwindow2.cpp
firstmainwindow.cpp
mainwindow3.cpp
mainwindow4.cpp
mainwindow5.cpp
main.cpp

FORMS +=
mainwindow1.ui
mainwindow2.ui
firstmainwindow.ui
mainwindow3.ui
mainwindow4.ui
mainwindow5.ui

QT += widgets

jugnu

Sir how to change the Kit parameter from Desktop5 to only Desktop.As the same code with Kit in Desktop mode worked absolutely fine

SGaist

Just add the Kit for Desktop and remove the one from Desktop5 in the Project panel

jugnu

Can anybody please tell me how to convert my project of Qt 5.3 to .exe file in windows.

jugnu

I got the .exe file in build option . But when I run .exe file it gives the error Qt5core.dll missing. How to resolve it?

IamSumit

Hi.
if you want to run your exe then just copy and paste from -C:\Qt\4.8.4\bin- ..../Qt/5.x/bin folder Qt5core.dll file.
hope this helps.

Edited@IamSumit :)

JKSH

Hi,

[quote author="jugnu" date="1414628714"]I got the .exe file in build option . But when I run .exe file it gives the error Qt5core.dll missing. How to resolve it?
[/quote]See http://qt-project.org/wiki/Deploy_an_Application_on_Windows

[quote author="IamSumit" date="1414649854"]copy and paste from C:\Qt\4.8.4\bin folder Qt5core.dll file.[/quote]You'll need other DLLs too, not just Qt5Core.dll. The link above describes one way of finding all the correct DLLs.

Also, you won't find Qt 5 DLLs in a Qt 4.8 folder ;)

Rolias

I don't know in which version it started, but Qt has a windows deployment tool. I recently wrote up a "blog entry on it":http://bit.ly/qt5deploy. I found it worked quite well at gathering up all the .dlls needed to deploy an application.

jugnu

I am writing output to a file using :

(*out) << variable_name ;

But i want to print it with 6 digit precision .How to do that?

jugnu

I got the answer
Thanx!!!1

jugnu

I have three methods implemented in my project with tables.. I want that if user gives input to the table of first methods. Same inputs are copied to the
table of second and third methods. How to do that?

tarod.net

Check this web:

http://www.cplusplus.com/reference/iomanip/setprecision/

Anyway, I think you should post the question in other forum.

JKSH

[quote author="tarod.net" date="1416220083"]Anyway, I think you should post the question in other forum.[/quote]Yes, please start a new thread if you have more questions.

This thread is for discussing "Older to New Version of Qt".