在问,第一个窗口都编不通,郁闷 [复制链接]

/********************************************************************************
** Form generated from reading ui file 'untitled.ui'
**
** Created: Sun Jul 1 13:58:40 2007
**      by: Qt User Interface Compiler version 4.3.0
**
** WARNING! All changes made in this file will be lost when recompiling ui file!
********************************************************************************/

#ifndef UI_UNTITLED_H
#define UI_UNTITLED_H

#include <QtCore/QVariant>
#include <QtGui/QAction>
#include <QtGui/QApplication>
#include <QtGui/QButtonGroup>
#include <QtGui/QMainWindow>
#include <QtGui/QMenuBar>
#include <QtGui/QStatusBar>
#include <QtGui/QWidget>

class Ui_MainWindow
{
public:
    QWidget *centralwidget;
    QMenuBar *menubar;
    QStatusBar *statusbar;

    void setupUi(QMainWindow *MainWindow)
    {
    if (MainWindow->objectName().isEmpty())
        MainWindow->setObjectName(QString::fromUtf8("MainWindow"));
    QSize size(800, 600);
    size = size.expandedTo(MainWindow->minimumSizeHint());
    MainWindow->resize(size);
    centralwidget = new QWidget(MainWindow);
    centralwidget->setObjectName(QString::fromUtf8("centralwidget"));
    MainWindow->setCentralWidget(centralwidget);
    menubar = new QMenuBar(MainWindow);
    menubar->setObjectName(QString::fromUtf8("menubar"));
    menubar->setGeometry(QRect(0, 0, 800, 18));
    MainWindow->setMenuBar(menubar);
    statusbar = new QStatusBar(MainWindow);
    statusbar->setObjectName(QString::fromUtf8("statusbar"));
    MainWindow->setStatusBar(statusbar);

    retranslateUi(MainWindow);

    QMetaObject::connectSlotsByName(MainWindow);
    } // setupUi

    void retranslateUi(QMainWindow *MainWindow)
    {
    MainWindow->setWindowTitle(QApplication::translate("MainWindow", "MainWindow", 0, QApplication::UnicodeUTF8));
    Q_UNUSED(MainWindow);
    } // retranslateUi

};

namespace Ui {
    class MainWindow: public Ui_MainWindow {};
} // namespace Ui

#endif // UI_UNTITLED_H





#include <QtGui/QtGui>
#include "ddd.h"

int main(int argc,char *argv[])
{
     QApplication Form(argc,argv);
     Ui::Ui_MainWindow dialog;
     dialog.show();
     return Form.exec();
}

提示错误:main.cpp: In function 'int qMain<int, char**>':
main.cpp:7:error:'Ui_MainWindow' is not a member of 'Ui'
main.cpp:7:error: expected ';' before "dialog"
main.cpp:8:error: 'dialog' undeclared <first use this function>
main.cpp:8:error: <Each undeclared identifier is reported only once
到底要怎么才对啊啊啊!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

http://www.qtcn.org/bbs/read.php?tid=1159

谢谢,终于搞通了,但是我又有个奇怪的问题,在你写的学习QT4初步编程一和二里,我发现他们的main函数有不同,
#include <QApplication>
#include <QTranslator>
#include "form1.h"

int main(int argc, char **argv)
{
  QApplication app(argc, argv);
  Form1 form1;
  form1.show();
  return app.exec();    //你这里是app.exec
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MyWindow mywindow;
    return mywindow.exec(); //你这里为什么又不是app.exec,
而是mywindow.exec呢?为什么?有什么区别吗?
}

另外还有,列子里的类定义里有一个Q_OBJECT ,这个有是干什么的?

这个是用做自定义槽的

引用第3楼wmhnq于2007-07-01 17:32发表的  :
另外还有,列子里的类定义里有一个Q_OBJECT ,这个有是干什么的?

这是 MOC 的东西。