Difference between revisions of "Qt/Widgets/MessageBoxFromThread"
From ProgrammingExamples
< Qt
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This example is currently broken. | This example is currently broken. | ||
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==MessageBoxFromThread.cxx== | ==MessageBoxFromThread.cxx== | ||
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#include "form.h" | #include "form.h" | ||
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int main(int argc, char*argv[]) | int main(int argc, char*argv[]) | ||
{ | { | ||
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public: | public: | ||
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virtual void run(); | virtual void run(); | ||
| + | signals: | ||
| + | void DisplayMessageBoxSignal(); | ||
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}; | }; | ||
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void Thread::run() | void Thread::run() | ||
{ | { | ||
| − | std::cout << " | + | std::cout << "Thread::run()" << std::endl; |
| − | + | emit DisplayMessageBoxSignal(); | |
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} | } | ||
</source> | </source> | ||
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#include <QWidget> | #include <QWidget> | ||
#include "ui_form.h" | #include "ui_form.h" | ||
| + | #include "thread.h" | ||
class Form : public QWidget, private Ui::Form | class Form : public QWidget, private Ui::Form | ||
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public slots: | public slots: | ||
void pushButton_clicked(); | void pushButton_clicked(); | ||
| + | void DisplayMessageBoxSlot(); | ||
| + | |||
| + | private: | ||
| + | Thread MyThread; | ||
}; | }; | ||
| Line 84: | Line 83: | ||
==form.cpp== | ==form.cpp== | ||
<source lang="cpp"> | <source lang="cpp"> | ||
| + | #include <QMessageBox> | ||
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#include "form.h" | #include "form.h" | ||
#include "thread.h" | #include "thread.h" | ||
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setupUi(this); | setupUi(this); | ||
connect( this->pushButton, SIGNAL( clicked() ), this, SLOT(pushButton_clicked()) ); | connect( this->pushButton, SIGNAL( clicked() ), this, SLOT(pushButton_clicked()) ); | ||
| + | connect( this->MyThread, SIGNAL( Thread::DisplayMessageBoxSignal() ), this, SLOT(DisplayMessageBoxSlot()) ); | ||
} | } | ||
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} | } | ||
| − | + | void Form::DisplayMessageBoxSlot() | |
| − | + | { | |
| + | QMessageBox msgBox; | ||
| + | msgBox.setText("Test Text"); | ||
| + | msgBox.exec(); | ||
| + | } | ||
</source> | </source> | ||
Revision as of 19:10, 28 November 2010
This example is currently broken.
Contents
MessageBoxFromThread.cxx
#include <QApplication> #include <iostream> #include "form.h" int main(int argc, char*argv[]) { QApplication app(argc, argv); Form form; form.show(); return app.exec(); }
thread.h
#ifndef THREAD_H #define THREAD_H #include <QThread> class Thread : public QThread { public: virtual void run(); signals: void DisplayMessageBoxSignal(); }; #endif
thread.cpp
#include "thread.h" #include <QMessageBox> #include <iostream> void Thread::run() { std::cout << "Thread::run()" << std::endl; emit DisplayMessageBoxSignal(); }
form.h
#ifndef BUTTONFORM_H #define BUTTONFORM_H #include <QWidget> #include "ui_form.h" #include "thread.h" class Form : public QWidget, private Ui::Form { Q_OBJECT public: Form(QWidget *parent = 0); public slots: void pushButton_clicked(); void DisplayMessageBoxSlot(); private: Thread MyThread; }; #endif
form.cpp
#include <QMessageBox> #include "form.h" #include "thread.h" Form::Form(QWidget *parent) : QWidget(parent) { setupUi(this); connect( this->pushButton, SIGNAL( clicked() ), this, SLOT(pushButton_clicked()) ); connect( this->MyThread, SIGNAL( Thread::DisplayMessageBoxSignal() ), this, SLOT(DisplayMessageBoxSlot()) ); } void Form::pushButton_clicked() { Thread a; a.start(); } void Form::DisplayMessageBoxSlot() { QMessageBox msgBox; msgBox.setText("Test Text"); msgBox.exec(); }
form.ui
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>Form</class>
<widget class="QWidget" name="Form">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>400</width>
<height>300</height>
</rect>
</property>
<property name="windowTitle">
<string>My Program</string>
</property>
<widget class="QPushButton" name="pushButton">
<property name="geometry">
<rect>
<x>130</x>
<y>100</y>
<width>91</width>
<height>28</height>
</rect>
</property>
<property name="text">
<string>Click me</string>
</property>
</widget>
</widget>
<resources/>
<connections/>
</ui>CMakeLists.txt
cmake_minimum_required(VERSION 2.6) PROJECT(MessageBoxFromThread) FIND_PACKAGE(Qt4 REQUIRED) INCLUDE(${QT_USE_FILE}) QT4_WRAP_UI(UISrcs form.ui) QT4_WRAP_CPP(MOCSrcs form.h) include_directories(${include_directories} ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}) ADD_EXECUTABLE(MessageBoxFromThread MessageBoxFromThread.cpp form.cpp thread.cpp ${MOCSrcs} ${UISrcs}) TARGET_LINK_LIBRARIES(MessageBoxFromThread ${QT_LIBRARIES})
