fatal error: ui_mainwindow.h: No such file or directory #include "ui_mainwindow.h"

[deleted286]

I've rebuild several times, run qmake etc. It doesnt solve .

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QtWidgets/QMainWindow>
#include <QMainWindow>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    ui->setupUi(this);

    // Initialize the new objects
    myThreadObject = new MyThread();
    myQThread = new QThread();

    // Move to new thread
    myThreadObject->moveToThread(myQThread);

    // connect signal and slots
    connect(this, &MainWindow::startWriting, myThreadObject, &MyThread::writeData);
    connect(myThreadObject, &MyThread::writingDone, this, &MainWindow::writingDoneByThread);

    // Start the new thread
    myQThread->start();
}

[JonB]

@suslucoder
Please don't delete an existing thread and then raise a new thread with the same question.

What files do you have in your build/compile output directory? That is where it should be. Are you designing a mainwindow.ui from Qt Designer?

[deleted286]

@JonB I'm trying to do that; reading datas from txt in a thread, and write datas to txt in another thread. I have these:

[JonB]

@suslucoder said in fatal error: ui_mainwindow.h: No such file or directory #include "ui_mainwindow.h":

I'm trying to do that; reading datas from txt in a thread, and write datas to txt in another thread.

Sorry, but that has no relevance at all to a compilation problem.

[That's a completely separate matter from: given the questions you ask, if I were you I would not dream of doing anything involving threads...]

And is the missing file not in the debug directory? Assuming you're compiling for Debug, which you don't say.

[deleted286]

@JonB I have been solve it.

[JonB]

@suslucoder
And how did you achieve the solution, given that you've asked so much about this?

[deleted286]

@JonB I copied "ui_mainwindow.h" file from another build file

[deleted286]

@JonB said

given that you've asked so much about this?

Why do you always make insinuation to me? I dont know lots of the things about Qt and im trying to learn.

[JonB]

@suslucoder
I'm sorry if you feel I'm being hard on you. Quite a few of your questions are things you really should be able to solve for yourself, not ask questions of other people. It may not seem like it, but in the long run reading documentation and solving things for yourself is the only way to learn. I will leave it at that now.

BTW,

I copied "ui_mainwindow.h" file from another build file

This may or may not be right, depending on just what you did where. The ui_mainwindow.h has to be regenerated every time you edit in Designer to change the mainwindow.ui file. If you later find that you make changes in Designer and these are not reflected in your code, you will have hit a problem. Just saying.