how can we move an image?

[sh123]

how can we move an image up & down

[spirit]

what do you mean? using mouse? keyboard? or programmatically?
provide more information, please.

[sh123]

programmatically.sorry for the incomplete information.

[jpn]

You're still not being too clear. Remember that we don't know anything about the application you're writing. An image can be shown in many ways. It would be crucial information for us to know how you do it to be able to help you.

[sh123]

The following is the code:

Main::Main(QGraphicsScene& c, QWidget* parent, const char* name, Qt::WindowFlags f) :
    Q3MainWindow(parent,name,f),
    canvas(c)
{
    editor = new FigureEditor(canvas,this);
    QMenuBar* menu = menuBar();
    QPushButton *rotate1 = new QPushButton(tr("Rotate->"), this);
    rotate1->setGeometry(2, 0, 55, 20);
    connect(rotate1, SIGNAL(clicked()), this, SLOT(rotateClockwise()));
 
    QPushButton *rotate2 = new QPushButton(tr("Rotate<-"), this);
    rotate2->setGeometry(2, 18, 55, 20);
    connect(rotate2, SIGNAL(clicked()), this, SLOT(rotateCounterClockwise()));
 
    QPushButton *zoom_in = new QPushButton(tr("zoom_in"), this);
    zoom_in->setGeometry(2, 36, 55, 20);
    connect(zoom_in, SIGNAL(clicked()), this, SLOT(zoomIn()));
 
    QPushButton *zoom_out = new QPushButton(tr("zoom_out"), this);
    zoom_out->setGeometry(2, 54, 55, 20);
    connect(zoom_out, SIGNAL(clicked()), this, SLOT(zoomOut()));
 
    QPushButton *moveup = new QPushButton(tr("moveUp"), this);
    moveup->setGeometry(2, 72, 55, 20);
    connect(moveup, SIGNAL(clicked()), this, SLOT(moveU()));
 
    QPushButton *movedown = new QPushButton(tr("movedown"), this);
    movedown->setGeometry(2, 90, 55, 20);
    connect(movedown, SIGNAL(clicked()), this, SLOT(moveD()));
 
    QPushButton *moveleft = new QPushButton(tr("moveleft"), this);
    moveleft->setGeometry(2, 108, 55, 20);
    connect(moveleft, SIGNAL(clicked()), this, SLOT(moveL()));
 
    QPushButton *moveright = new QPushButton(tr("moveright"), this);
    moveright->setGeometry(2, 126, 55, 20);
    connect(moveright, SIGNAL(clicked()), this, SLOT(moveR()));
 
    xval=0;
    yval=0;
 
    setCentralWidget(editor);
 
    printer = 0;
 
    init();
}
void Main::rotateClockwise()
{
    editor->rotate( 5 );
}
 
void Main::rotateCounterClockwise()
{
    editor->rotate( -5 );
}
 
void Main::zoomIn()
{
 
    editor->scale( 1.1, 1.1 );
}
 
void Main::zoomOut()
{
    editor->scale( 0.9, 0.9 );
}
 
void Main::mirror()
{
    editor->scale( -1, 1 );
}
 
void Main::moveL()
{
    editor->translate( -16, 0 );
}
 
void Main::moveR()
{
    editor->translate( +16, 0 );
}
 
void Main::moveU()
{
	yval++;
    editor->translate( 0, -660 );
}
 
void Main::moveD()
{
	xval++;
    editor->translate( 0, +660 );
}

Main::Main(QGraphicsScene& c, QWidget* parent, const char* name, Qt::WindowFlags f) :
    Q3MainWindow(parent,name,f),
    canvas(c)
{
    editor = new FigureEditor(canvas,this);
    QMenuBar* menu = menuBar();
    QPushButton *rotate1 = new QPushButton(tr("Rotate->"), this);
    rotate1->setGeometry(2, 0, 55, 20);
    connect(rotate1, SIGNAL(clicked()), this, SLOT(rotateClockwise()));

    QPushButton *rotate2 = new QPushButton(tr("Rotate<-"), this);
    rotate2->setGeometry(2, 18, 55, 20);
    connect(rotate2, SIGNAL(clicked()), this, SLOT(rotateCounterClockwise()));

    QPushButton *zoom_in = new QPushButton(tr("zoom_in"), this);
    zoom_in->setGeometry(2, 36, 55, 20);
    connect(zoom_in, SIGNAL(clicked()), this, SLOT(zoomIn()));

    QPushButton *zoom_out = new QPushButton(tr("zoom_out"), this);
    zoom_out->setGeometry(2, 54, 55, 20);
    connect(zoom_out, SIGNAL(clicked()), this, SLOT(zoomOut()));

    QPushButton *moveup = new QPushButton(tr("moveUp"), this);
    moveup->setGeometry(2, 72, 55, 20);
    connect(moveup, SIGNAL(clicked()), this, SLOT(moveU()));

    QPushButton *movedown = new QPushButton(tr("movedown"), this);
    movedown->setGeometry(2, 90, 55, 20);
    connect(movedown, SIGNAL(clicked()), this, SLOT(moveD()));

    QPushButton *moveleft = new QPushButton(tr("moveleft"), this);
    moveleft->setGeometry(2, 108, 55, 20);
    connect(moveleft, SIGNAL(clicked()), this, SLOT(moveL()));

    QPushButton *moveright = new QPushButton(tr("moveright"), this);
    moveright->setGeometry(2, 126, 55, 20);
    connect(moveright, SIGNAL(clicked()), this, SLOT(moveR()));

    xval=0;
    yval=0;

    setCentralWidget(editor);

    printer = 0;

    init();
}
void Main::rotateClockwise()
{
    editor->rotate( 5 );
}

void Main::rotateCounterClockwise()
{
    editor->rotate( -5 );
}

void Main::zoomIn()
{

    editor->scale( 1.1, 1.1 );
}

void Main::zoomOut()
{
    editor->scale( 0.9, 0.9 );
}

void Main::mirror()
{
    editor->scale( -1, 1 );
}

void Main::moveL()
{
    editor->translate( -16, 0 );
}

void Main::moveR()
{
    editor->translate( +16, 0 );
}

void Main::moveU()
{
	yval++;
    editor->translate( 0, -660 );
}

void Main::moveD()
{
	xval++;
    editor->translate( 0, +660 );
}

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Here the image is getting rotated clockwise & anticlockwise but not moving up,down,left & right.sorry for not using code tags instead of 2 warnings.I followed the link given by you but i could'nt understand how to use code tags.