Qt add slot to mainwindow

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В mainwindow добавить слот, принимающий (x, y). В GL_wgt - сигнал, посылающий (x, y). В GL_wgt::mousePressEvent - emit sendXY(_x, _y).Ё*банный стыд, ну хоть бы документацию сперва почитал, что ли. А вообще, судя по количеству говнокодеров, которые лезут на Qt, оно...

I have signal in my MainWindow to emit a number thats in a line edit. When I click a button to open the dialog, I want that number to be copied to the line edit in the dialog. I can't get it to connect. I can see the signal is emitting with qDebug. Am I connecting it wrong or in the wrong place? I have tried many ways. Here are my code snippets. c++ - How to add "member" to MainWindow class in Qt ... 'Ui::MainWindow' has no member named 'filePath' ui->filePath->setText(fileName); ^ So i guess i have to add filePath to the MainWindow, but since im new to Qt and C++ i dont know exactly how to do that. Here is mainwindow.h c++ - Qt connect class to MainWindow - Stack Overflow In Qt 4.8, I'm trying to get a signal in one class to communicate with a slot in the MainWindow and, while the code is executing, I'm not getting the desired result. I have two connect statements, one connects a signal in MainWindow to a slot in ser. qt - How to display a widget inside a main window - Stack ...

#include "mainwindow.h" #include MainWindow :: MainWindow ( QWidget * parent ) : QMainWindow ( parent ) { // Create the button, make "this" the parent m_button = new QPushButton ( "My Button" , this ); // set size and …

Link errors; Connect a Signal of an object in main.cpp to ... so I start the MainWindow in a new thread and let the old program in the main thread running (naturly, the old program is here represented for the smal void loop procedure). The problem come when I try to comunicate the old program with the gui. I only know the signal-> slot method, but it only work with objects I think.

In this QT C++ GUI tutorial I will show you How to open a new window from a button. So you will learn to Open new window when button on main-window is clicked. i.e. using QMainWindow open a new ...

Qt5 Tutorial Signals and Slots - 2018 - BogoToBogo We keep the class as MainWindow as given by default. ... The signals and slots mechanism is a central feature of Qt and probably the part that differs ... slots, but it is common practice to subclass widgets and add your own slots so that you can  ... 20 ways to debug Qt signals and slots | Sam Dutton's blog

You should use Qt's signal/slot mechanism. The thread will emit a signal, that new data has been read. Any interested object can connect to that signal, and perform actions depending on it. This also works across thread-boundaries, as in your example. In Qt, it is required that only the main-thread interacts with UI elements. Here is an outline:

Многие учебники по сигналам и слотам в Qt имеют двунаправленный обмен данными между двумя диалогами. В моем примере ниже я не пытаюсь обмениваться какими-либо данными, я пытаюсь вызвать метод updateComboBox класса mainWindow при закрытии (принятии)... Adding own slot to a signal from mainWindow... - Qt… QObject::connect: No such slot MainWindow::writeValue(int) in ../EigenerSlot/ mainwindow.cpp:10 QObject::connect: (sender name: 'g_sld') QObject::connect: (receiver name: ' MainWindow'). I understand the error, but I dont know how to tell Qt the correct Slot. I think this has maybe something... c++ - Qt: вызов MainWindow :: Ui из другого класса... -… Я сделал простой проект Qt, чтобы охватить проблему вызова Ui из другого класса.Проблема: Подключение сигнала от client.cpp к слоту в mainwindow.cpp работало очень хорошо. Но когда я добавил. Объясните разбор файла mainwindow.h в QT по шагам? —… Слоты — фишка Qt, которая обрабатывается MOC’ом private slotsПрограммист С++/Qt. AirNet • Санкт-Петербург. До 200 000 руб.