Qt C ++ command mode (similar to the QT signal slot)

This mode utilizes callback function technology.

Command. h

# Pragma once

# Include <qdebug>

Class ccommand
{
Public:
Virtual void execute () = 0;
};

Class creceiver
{
Public:
Void action ()
{
Qdebug () <"Action fact! ";
}
};

Class concreatecommand: Public ccommand
{
Public:
Concreatecommand (creceiver * rev): m_rev (REV ){}
~ Concreatecommand () {Delete m_rev ;}
Void execute ();

PRIVATE:
Creceiver * m_rev;
};

Class cinvoke
{
Public:
Cinvoke (ccommand * command): m_command (command ){}
~ Cinvoke () {Delete m_command ;}
Void invoke ();
PRIVATE:
Ccommand * m_command;
};

Command. cpp

# Include "command. H"

Void concreatecommand: Execute ()
{
M_rev-> action ();
}

Void cinvoke: invoke ()
{
M_command-> execute ();
}

Main. cpp

# Include <qapplication>
# Include "command. H"

Int main (INT argc, char ** argv)
{
Qapplication app (argc, argv );

Creceiver * REV = new creceiver;
Ccommand * command = new concreatecommand (REV );
Cinvoke * inv = new cinvoke (command );

Inv-> invoke ();
Delete inv;

Return app.exe C ();
}