Difference between revisions of "Qt/Widgets/MessageBoxFromThread"

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(Created page with '==MessageBoxFromThread.cxx== <source lang="cpp"> #include <QThread> #include <QMessageBox> #include <QApplication> #include <iostream> class MyThread : public QThread { public…')
 
m
 
(4 intermediate revisions by the same user not shown)
Line 1: Line 1:
 
==MessageBoxFromThread.cxx==
 
==MessageBoxFromThread.cxx==
 
<source lang="cpp">
 
<source lang="cpp">
−
#include <QThread>
 
−
#include <QMessageBox>
 
 
#include <QApplication>
 
#include <QApplication>
  
 
#include <iostream>
 
#include <iostream>
  
−
class MyThread : public QThread
+
#include "form.h"
 +
 
 +
int main(int argc, char*argv[])
 
{
 
{
 +
  QApplication app(argc, argv);
  
 +
  Form form;
 +
  form.show();
 +
 +
  return app.exec();
 +
}
 +
</source>
 +
 +
==thread.h==
 +
<source lang="cpp">
 +
#ifndef THREAD_H
 +
#define THREAD_H
 +
 +
#include <QThread>
 +
 +
class Thread : public QThread
 +
{
 +
Q_OBJECT
 
public:
 
public:
 +
  void run();
 +
 
 +
signals:
 +
  void DisplayMessageBoxSignal();
  
−
  virtual void run();
 
 
};
 
};
  
−
void MyThread::run()
+
#endif
 +
</source>
 +
 
 +
==thread.cpp==
 +
<source lang="cpp">
 +
#include "thread.h"
 +
 
 +
#include <QMessageBox>
 +
#include <iostream>
 +
 
 +
void Thread::run()
 +
{
 +
  std::cout << "Thread::run()" << std::endl;
 +
  emit DisplayMessageBoxSignal();
 +
}
 +
</source>
 +
 
 +
==form.h==
 +
<source lang="cpp">
 +
#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
 +
 
 +
</source>
 +
 
 +
==form.cpp==
 +
<source lang="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()
 
{
 
{
−
  std::cout << "Message box from thread" << std::endl;
 
−
 
 
 
   QMessageBox msgBox;
 
   QMessageBox msgBox;
 
   msgBox.setText("Test Text");
 
   msgBox.setText("Test Text");
 
   msgBox.exec();
 
   msgBox.exec();
 
}
 
}
−
   
+
</source>
−
int main(int argc, char*argv[])
+
−
{
+
−
  QApplication app(argc, argv);
+
  
−
   MyThread a;
+
==form.ui==
−
   a.start();
+
<source lang="text">
 +
<?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>
  
−
  return app.exec();
 
−
}
 
 
</source>
 
</source>
  
Line 39: Line 148:
 
cmake_minimum_required(VERSION 2.6)
 
cmake_minimum_required(VERSION 2.6)
  
−
PROJECT(ThreadMessageBox)
+
PROJECT(MessageBoxFromThread)
  
 
FIND_PACKAGE(Qt4 REQUIRED)
 
FIND_PACKAGE(Qt4 REQUIRED)
 
INCLUDE(${QT_USE_FILE})
 
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})
 
include_directories(${include_directories} ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR})
  
−
ADD_EXECUTABLE(ThreadMessageBox ThreadMessageBox.cpp)# ${MOCSrcs} ${UISrcs})
+
ADD_EXECUTABLE(MessageBoxFromThread MessageBoxFromThread.cpp form.cpp thread.cpp ${MOCSrcs} ${UISrcs})
−
TARGET_LINK_LIBRARIES(ThreadMessageBox ${QT_LIBRARIES})
+
TARGET_LINK_LIBRARIES(MessageBoxFromThread ${QT_LIBRARIES})
  
  
 
</source>
 
</source>

Latest revision as of 21:27, 28 November 2010

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})
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