在ARM9上开发一个GUI界面， 基本上选定用QT3（qt-3.3.8b）来开发。 使用designer 创建了两个ui文件， 一个是mainwinform.ui , 一个是dialogform.ui。
在mainwinform.ui里面放了两个按钮， 一个是nextButton , 一个是closeButton按钮， 我希望程序运行后， 按一下mainwinform里面的nextButton就弹出
dialogform界面。编译， 运行程序， 出现主界面。按nextButton. 却没有任何反应。 现在贴出源码， 请高手指点， 问题出在哪里，
main.cpp //源码
#include <qapplication.h>
#include "mainwinform.h"
int main( int argc, char ** argv )
{
QApplication a( argc, argv );
mainwinForm w;
w.show();
a.connect( &a, SIGNAL( lastWindowClosed() ), &a, SLOT( quit() ) );
return a.exec();
}
mainwinform.h//头文件
/****************************************************************************
** Form interface generated from reading ui file 'mainwinform.ui'
**
** Created: Tue Nov 9 17:36:07 2010
**
** WARNING! All changes made in this file will be lost!
****************************************************************************/
#ifndef MAINWINFORM_H
#define MAINWINFORM_H
#include <qvariant.h>
#include <qwidget.h>
#include "dialogform.h"
class QVBoxLayout;
class QHBoxLayout;
class QGridLayout;
class QSpacerItem;
class QPushButton;
class mainwinForm : public QWidget
{
Q_OBJECT
public:
mainwinForm( QWidget* parent = 0, const char* name = 0, WFlags fl = 0 );
~mainwinForm();
QPushButton* exitButton;
QPushButton* nextButton;
protected:
protected slots:
virtual void languageChange();
private:
dialogForm dg1form;
virtual void on_nextButton_clicked();
};
#endif // MAINWINFORM_H
mainwinform.cpp //源码
/****************************************************************************
** Form implementation generated from reading ui file 'mainwinform.ui'
**
** Created: Tue Nov 9 17:36:10 2010
**
** WARNING! All changes made in this file will be lost!
****************************************************************************/
#include "mainwinform.h"
#include <qvariant.h>
#include <qpushbutton.h>
#include <qlayout.h>
#include <qtooltip.h>
#include <qwhatsthis.h>
#include <qimage.h>
#include <qpixmap.h>
#include "mainwinform.ui.h"
/*
* Constructs a mainwinForm as a child of 'parent', with the
* name 'name' and widget flags set to 'f'.
*/
mainwinForm::mainwinForm( QWidget* parent, const char* name, WFlags fl )
: QWidget( parent, name, fl )
{
if ( !name )
setName( "mainwinForm" );
exitButton = new QPushButton( this, "exitButton" );
exitButton->setGeometry( QRect( 450, 390, 80, 32 ) );
nextButton = new QPushButton( this, "nextButton" );
nextButton->setGeometry( QRect( 280, 390, 70, 32 ) );
languageChange();
resize( QSize(600, 480).expandedTo(minimumSizeHint()) );
clearWState( WState_Polished );
// signals and slots connections
connect( exitButton, SIGNAL( clicked() ), this, SLOT( close() ) );
}
/*
* Destroys the object and frees any allocated resources
*/
mainwinForm::~mainwinForm()
{
// no need to delete child widgets, Qt does it all for us
}
/*
* Sets the strings of the subwidgets using the current
* language.
*/
void mainwinForm::languageChange()
{
setCaption( tr( "main win Form" ) );
exitButton->setText( tr( "&exit" ) );
exitButton->setAccel( QKeySequence( tr( "Alt+E" ) ) );
nextButton->setText( tr( "&next" ) );
nextButton->setAccel( QKeySequence( tr( "Alt+N" ) ) );
}
dialogform.h//头文件
/****************************************************************************
** Form interface generated from reading ui file 'dialogform.ui'
**
** Created: Tue Nov 9 17:36:07 2010
**
** WARNING! All changes made in this file will be lost!
****************************************************************************/
#ifndef DIALOGFORM_H
#define DIALOGFORM_H
#include <qvariant.h>
#include <qdialog.h>
class QVBoxLayout;
class QHBoxLayout;
class QGridLayout;
class QSpacerItem;
class dialogForm : public QDialog
{
Q_OBJECT
public:
dialogForm( QWidget* parent = 0, const char* name = 0, bool modal = FALSE, WFlags fl = 0 );
~dialogForm();
protected:
protected slots:
virtual void languageChange();
};
#endif // DIALOGFORM_H
dialogform.cpp //源码
/****************************************************************************
** Form implementation generated from reading ui file 'dialogform.ui'
**
** Created: Tue Nov 9 17:36:10 2010
**
** WARNING! All changes made in this file will be lost!
****************************************************************************/
#include "dialogform.h"
#include <qvariant.h>
#include <qlayout.h>
#include <qtooltip.h>
#include <qwhatsthis.h>
#include <qimage.h>
#include <qpixmap.h>
/*
* Constructs a dialogForm as a child of 'parent', with the
* name 'name' and widget flags set to 'f'.
*
* The dialog will by default be modeless, unless you set 'modal' to
* TRUE to construct a modal dialog.
*/
dialogForm::dialogForm( QWidget* parent, const char* name, bool modal, WFlags fl )
: QDialog( parent, name, modal, fl )
{
if ( !name )
setName( "dialogForm" );
languageChange();
resize( QSize(600, 480).expandedTo(minimumSizeHint()) );
clearWState( WState_Polished );
}
/*
* Destroys the object and frees any allocated resources
*/
dialogForm::~dialogForm()
{
// no need to delete child widgets, Qt does it all for us
}
/*
* Sets the strings of the subwidgets using the current
* language.
*/
void dialogForm::languageChange()
{
setCaption( tr( "dialog Form" ) );
}
响应nextButton的函数放到了mainwinform.ui.h文件里面，如下
/****************************************************************************
** ui.h extension file, included from the uic-generated form implementation.
**
** If you want to add, delete, or rename functions or slots, use
** Qt Designer to update this file, preserving your code.
**
** You should not define a constructor or destructor in this file.
** Instead, write your code in functions called init() and destroy().
** These will automatically be called by the form's constructor and
** destructor.
*****************************************************************************/
void mainwinForm::on_nextButton_clicked()
{
dg1form.show();
}
工程编译没有任何问题。 运行后按下next按钮， 什么反应也没有？ 请大家指点一二。
如果使用QT4，很容易就实现了。 方法一样。
