标签：qt
一、设计模式
1、头文件
#ifndef _MAINWINDOW_H_
#define _MAINWINDOW_H_
#include <QtGui/QMainWindow>
#include <QKeySequence>
#include <QMenuBar>
#include <QToolBar>
#include <QAction>
class MainWindow : public QMainWindow
{
Q_OBJECT
private:
MainWindow();
MainWindow(const MainWindow&);
MainWindow& operator= (const MainWindow&);
bool construct();
bool initMenuBar();
bool initToolBar();
bool initFileMenu(QMenuBar* mb);
bool initEditMenu(QMenuBar* mb);
bool initFormatMenu(QMenuBar* mb);
bool initViewMenu(QMenuBar* mb);
bool initHelpMenu(QMenuBar* mb);
bool initFileToolItem(QToolBar* tb);
bool makeAction(QAction*& action, QString text, int key);
bool makeAction(QAction*& action, QString tip, QString icon);
public:
static MainWindow* NewInstance();
~MainWindow();
};
#endif // _MAINWINDOW_H_2、cpp
#include "MainWindow.h"
#include <QMenu>
#include <QIcon>
#include <QSize>
MainWindow::MainWindow()
{
}
MainWindow* MainWindow::NewInstance()
{
MainWindow* ret = new MainWindow();
if( (ret == NULL) || !ret->construct() )
{
delete ret;
ret = NULL;
}
return ret;
}
bool MainWindow::construct()
{
bool ret = true;
ret = ret && initMenuBar();
ret = ret && initToolBar();
return ret;
}
bool MainWindow::initMenuBar()
{
bool ret = true;
QMenuBar* mb = menuBar();
ret = ret && initFileMenu(mb);
ret = ret && initEditMenu(mb);
ret = ret && initFormatMenu(mb);
ret = ret && initViewMenu(mb);
ret = ret && initHelpMenu(mb);
return ret;
}
bool MainWindow::initToolBar()
{
bool ret = true;
QToolBar* tb = addToolBar("Tool Bar");
tb->setIconSize(QSize(16, 16));
ret = ret && initFileToolItem(tb);
return ret;
}
bool MainWindow::initFileMenu(QMenuBar* mb)
{
QMenu* menu = new QMenu("File(&F)");
bool ret = (menu != NULL);
if( ret )
{
QAction* action = NULL;
ret = ret && makeAction(action, "New(&N)", Qt::CTRL + Qt::Key_N);
if( ret )
{
menu->addAction(action);
}
ret = ret && makeAction(action, "Open(&O)...", Qt::CTRL + Qt::Key_O);
if( ret )
{
menu->addAction(action);
}
ret = ret && makeAction(action, "Save(&S)", Qt::CTRL + Qt::Key_S);
if( ret )
{
menu->addAction(action);
}
ret = ret && makeAction(action, "Save As(&A)...", 0);
if( ret )
{
menu->addAction(action);
}
menu->addSeparator();
ret = ret && makeAction(action, "Print(&P)...", Qt::CTRL + Qt::Key_P);
if( ret )
{
menu->addAction(action);
}
menu->addSeparator();
ret = ret && makeAction(action, "Exit(&X)", 0);
if( ret )
{
menu->addAction(action);
}
}
if( ret )
{
mb->addMenu(menu);
}
else
{
delete menu;
}
return ret;
}
bool MainWindow::initEditMenu(QMenuBar* mb)
{
QMenu* menu = new QMenu("Edit(&E)");
bool ret = (menu != NULL);
if( ret )
{
QAction* action = NULL;
ret = ret && makeAction(action, "Undo(&U)", Qt::CTRL + Qt::Key_Z);
if( ret )
{
menu->addAction(action);
}
ret = ret && makeAction(action, "Redo(&R)...", Qt::CTRL + Qt::Key_Y);
if( ret )
{
menu->addAction(action);
}
menu->addSeparator();
ret = ret && makeAction(action, "Cut(&T)", Qt::CTRL + Qt::Key_X);
if( ret )
{
menu->addAction(action);
}
ret = ret && makeAction(action, "Copy(&C)...", Qt::CTRL + Qt::Key_C);
if( ret )
{
menu->addAction(action);
}
ret = ret && makeAction(action, "Paste(&P)...", Qt::CTRL + Qt::Key_V);
if( ret )
{
menu->addAction(action);
}
ret = ret && makeAction(action, "Delete(&L)", Qt::Key_Delete);
if( ret )
{
menu->addAction(action);
}
menu->addSeparator();
ret = ret && makeAction(action, "Find(&F)...", Qt::CTRL + Qt::Key_F);
if( ret )
{
menu->addAction(action);
}
ret = ret && makeAction(action, "Replace(&R)...", Qt::CTRL + Qt::Key_H);
if( ret )
{
menu->addAction(action);
}
ret = ret && makeAction(action, "Goto(&G)...", Qt::CTRL + Qt::Key_G);
if( ret )
{
menu->addAction(action);
}
menu->addSeparator();
ret = ret && makeAction(action, "Select All(&A)", Qt::CTRL + Qt::Key_A);
if( ret )
{
menu->addAction(action);
}
}
if( ret )
{
mb->addMenu(menu);
}
else
{
delete menu;
}
return ret;
}
bool MainWindow::initFormatMenu(QMenuBar* mb)
{
QMenu* menu = new QMenu("Format(&O)");
bool ret = (menu != NULL);
if( ret )
{
QAction* action = NULL;
ret = ret && makeAction(action, "Auto Wrap(&W)", 0);
if( ret )
{
menu->addAction(action);
}
ret = ret && makeAction(action, "Font(&F)...", 0);
if( ret )
{
menu->addAction(action);
}
}
if( ret )
{
mb->addMenu(menu);
}
else
{
delete menu;
}
return ret;
}
bool MainWindow::initViewMenu(QMenuBar* mb)
{
QMenu* menu = new QMenu("View(&V)");
bool ret = (menu != NULL);
if( ret )
{
QAction* action = NULL;
ret = ret && makeAction(action, "Tool Bar(&T)", 0);
if( ret )
{
menu->addAction(action);
}
ret = ret && makeAction(action, "Status Bar(&S)", 0);
if( ret )
{
menu->addAction(action);
}
}
if( ret )
{
mb->addMenu(menu);
}
else
{
delete menu;
}
return ret;
}
bool MainWindow::initHelpMenu(QMenuBar* mb)
{
QMenu* menu = new QMenu("Help(&H)");
bool ret = (menu != NULL);
if( ret )
{
QAction* action = NULL;
ret = ret && makeAction(action, "User Manual", 0);
if( ret )
{
menu->addAction(action);
}
ret = ret && makeAction(action, "About NotePad...", 0);
if( ret )
{
menu->addAction(action);
}
}
if( ret )
{
mb->addMenu(menu);
}
else
{
delete menu;
}
return ret;
}
bool MainWindow::initFileToolItem(QToolBar* tb)
{
bool ret = true;
QAction* action = NULL;
ret = ret && makeAction(action, "New", ":/res/pic/new.png");
if( ret )
{
tb->addAction(action);
}
ret = ret && makeAction(action, "Open", ":/res/pic/open.png");
if( ret )
{
tb->addAction(action);
}
return ret;
}
bool MainWindow::makeAction(QAction*& action, QString text, int key)
{
bool ret = true;
action = new QAction(text, NULL);
if( action != NULL )
{
action->setShortcut(QKeySequence(key));
}
else
{
ret = false;
}
return ret;
}
bool MainWindow::makeAction(QAction*& action, QString tip, QString icon)
{
bool ret = true;
action = new QAction("", NULL);
if( action != NULL )
{
action->setToolTip(tip);
action->setIcon(QIcon(icon));
}
else
{
ret = false;
}
return ret;
}
MainWindow::~MainWindow()
{
}3、main.cpp
#include <QtGui/QApplication>
#include "MainWindow.h"
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow* w = MainWindow::NewInstance();
int ret = -1;
if( w != NULL )
{
w->show();
ret = a.exec();
}
delete w;
return ret;
}本文出自 “whylinux” 博客，谢绝转载！
标签：qt
原文地址：http://whylinux.blog.51cto.com/10900429/1976187
