Qt thread learning a qthread example

A qthread example

// Threadtest. h
# Ifndef threadtest_h
# Define threadtest_h

# Include <qthread. h>
# Include "test. H"

Class mythread: Public qthread
{
Protected:
Virtual void run ();
};

Mythread;

Void test: newslot ()
{
Mythread. Start ();
}

# Endif

////////////////////////////////

// Threadtest. cpp

# Include <qdialog>

Void mythread: Run ()
{
For (INT I = 0; I <100; I ++)
{
Printf ("new value I is: % d", I );
// Qmessagebox: Information (this, TR ("info"), TR ("load DLL OK! "));
// Qmessagebox: Information (this, TR ("empty search"), "click find .");
// Test m;
// M. Show ();
Qdebug ("mhf ");
}
/*
Qdialog * dialog = new qdialog (0, "popup", false );
Dialog-> setcaption ("A qdialog window ");
Dialog-> setminimumsize (200,80 );
Dialog-> setmaximumsize (200,80 );
Dialog-> show ();
*/
}

//////////////////////////////////////// /////////////////////

// Test. cpp

# Include "test. H"

# Include <qvariant. h>
# Include <qlineedit. h>
# Include <qpushbutton. h>
# Include <qtextedit. h>
# Include <qlayout. h>
# Include <qtooltip. h>
# Include <qwhatsthis. h>
# Include <qimage. h>
# Include <qpixmap. h>
# Include <qvboxlayout>

/*
* Constructs a test as a child of 'parent', with
* Name 'name' and Widget flags set to 'F '.
*/
Test: Test (qwidget * parent): qwidget (parent = 0)
{
This-> setwindowtitle ("W ");
This-> resize( 250, 50 );

Textedit1 = new qtextedit ("textedit1 ");
Textedit1-> setgeometry (qrect (10, 60,570,291 ));

Lineedit1 = new qlineedit ("lineedit1 ");
Lineedit1-> setgeometry (qrect (10,360,571, 31 ));

Pushbutton2 = new qpushbutton ("pushbutton2 ");
Pushbutton2-> setgeometry (qrect (380,400,201, 41 ));

Pushbutton1 = new qpushbutton ("pushbutton1 ");
Pushbutton1-> setgeometry (qrect (10, 10,261, 41 ));
// Languagechange ();
Resize (qsize (600,480). expandedto (minimumsizehint ()));

// Signals and slots connections
Connect (pushbutton1, signal (clicked (), this, slot (newslot ()));
Connect (pushbutton2, signal (clicked (), this, slot (languagechange ()));
// Add
Qvboxlayout * layout = new qvboxlayout;
Layout-> addwidget (textedit1 );
Layout-> addwidget (lineedit1 );
Layout-> addwidget (pushbutton1 );
Layout-> addwidget (pushbutton2 );

This-> setlayout (layout );
This-> resize( 350,200 );

}

/*
* Destroys the object and frees any allocated resources
*/
Test ::~ Test ()
{
// No need to delete child widgets, QT does it all for us
}

/*
* Sets the strings of the subwidgets using the current
* Language.
*/
Void test: languagechange ()
{
This-> setwindowtitle ("M ");
// Printf ("new value I is ");
Pushbutton2-> settext (TR ("pushbutton2 "));
Pushbutton1-> settext (TR ("pushbutton1 "));
}

///////////////////////////////////////

// Test. h
# Ifndef test_h
# Define test_h

# Include <qvariant. h>
# Include <qwidget. h>

Class qvboxlayout;
Class qhboxlayout;
Class qgridlayout;
Class qlineedit;
Class qpushbutton;
Class qtextedit;

Class test: Public qwidget
{
Q_object

Public:
Test (qwidget * parent = 0 );
~ Test ();

Qtextedit * textedit1;
Qlineedit * lineedit1;
Qpushbutton * pushbutton2;
Qpushbutton * pushbutton1;

Public slots:
Virtual void newslot ();

Protected:

Protected slots:
Virtual void languagechange ();
};

# Endif // test_h

//////////////////////////////////////

Main. cpp

# Include <qapplication. h>
# Include "test. H"

Int main (INT argc, char ** argv)
{
Qapplication A (argc, argv );
Test W;
W. Show ();
A. Connect (& A, signal (lastwindowclosed (), & A, slot (quit ()));
Return a.exe C ();
}

/////////////

Debug and run

GDB *. exe

Run step: click the button to view the output debugging information.