Difference between revisions of "Qt/Widgets/MessageBoxFromThread"
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< Qt
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==MessageBoxFromThread.cxx== | ==MessageBoxFromThread.cxx== | ||
<source lang="cpp"> | <source lang="cpp"> | ||
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#include "form.h" | #include "form.h" | ||
− | + | ||
− | + | ||
int main(int argc, char*argv[]) | int main(int argc, char*argv[]) | ||
{ | { | ||
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class Thread : public QThread | class Thread : public QThread | ||
{ | { | ||
− | + | Q_OBJECT | |
public: | public: | ||
+ | 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; | ||
}; | }; | ||
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==form.cpp== | ==form.cpp== | ||
<source lang="cpp"> | <source lang="cpp"> | ||
+ | #include <QMessageBox> | ||
+ | |||
#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( DisplayMessageBoxSignal() ), this, SLOT(DisplayMessageBoxSlot()) ); | ||
} | } | ||
void Form::pushButton_clicked() | void Form::pushButton_clicked() | ||
{ | { | ||
− | + | MyThread.start(); | |
− | + | ||
} | } | ||
− | + | void Form::DisplayMessageBoxSlot() | |
− | + | { | |
+ | QMessageBox msgBox; | ||
+ | msgBox.setText("Test Text"); | ||
+ | msgBox.exec(); | ||
+ | } | ||
</source> | </source> | ||
Latest revision as of 21:27, 28 November 2010
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 { Q_OBJECT public: 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( DisplayMessageBoxSignal() ), this, SLOT(DisplayMessageBoxSlot()) ); } void Form::pushButton_clicked() { MyThread.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})