Block Widget Movement

[shyam prasad]

Hi ..

1 ) I want block the move ment of the widget horizentolly , after clicking mouse left button .

i.e: the entire widget should not be movable horizontally , after pressing the mouse left button in the widget .


2 )

when i press the mouse right button the entire widget should be in black color , including the caption bar .



Thanks

[marcel]

You're gonna have to be more detailed than that!

What kind of widget is that ( you mentioned that it has a caption bar ).
What is the parent widget? What kind of layout does the parent widget has?

Marcel

[shyam prasad]

You're gonna have to be more detailed than that!

What kind of widget is that ( you mentioned that it has a caption bar ).
What is the parent widget? What kind of layout does the parent widget has?

Marcel

Thanks Marcel ,

Here my widget does not have parent widget .
it should not be movable horizentolly after clicking right mouse button .


Marcel , i am waiting for u r reply

Thanks

[marcel]

Does it move programatically, as a response to some other event or you drag it with the mouse?

Either way, you should fix its x position to the one it had when you pressed the right button.

If you move it with the mouse, then reimplement mousePressEvent, and in it store the it's x position if the right button is clicked.

Also you must have reimplemented mouseMoveEvent. Here you just have to move your widget only on the vertical by keeping the stored x from mousePressEvent.

Still need more details if you want a more particular solution.

[shyam prasad]

[QUOTE=marcel;33411]Does it move programatically, as a response to some other event or you drag it with the mouse?


Thanks Marcel .

Widget should be move through the mouse .

Can u show me a piece of code .

Thanks .

[marcel]

MyWidget::MyWidget( QWidget* parent )
:QWidget( parent )
{
    mFixedX = 0;
    mDragging = false;
}
 
MyWidget::~MyWidget()
{
}
 
void MyWidget::mousePressEvent( QMouseEvent* e )
{
    if( e->buttons() & Qt::RightButton )
        mFixedX = e->globalPos()->x();
}
 
void MyWidget::mouseMoveEvent( QMouseEvent* e )
{
    if( !mDragging && ( e->buttons() & Qt::RightButton )
        mDragging = true;
    if( mDragging )
        move( mFixedX, e->globalPos()->y();
}
 
void MyWidget::mouseReleaseEvent( QMouseEvent* e )
{
    mDragging = false;
}

MyWidget::MyWidget( QWidget* parent )
:QWidget( parent )
{
    mFixedX = 0;
    mDragging = false;
}

MyWidget::~MyWidget()
{
}

void MyWidget::mousePressEvent( QMouseEvent* e )
{
    if( e->buttons() & Qt::RightButton )
        mFixedX = e->globalPos()->x();
}

void MyWidget::mouseMoveEvent( QMouseEvent* e )
{
    if( !mDragging && ( e->buttons() & Qt::RightButton )
        mDragging = true;
    if( mDragging )
        move( mFixedX, e->globalPos()->y();
}

void MyWidget::mouseReleaseEvent( QMouseEvent* e )
{
    mDragging = false;
}

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The minimal class definition should be:

class MyWidget : public QWidget
{
    Q_OBJECT
public:
    MyWidget( QWidget* parent = NULL );
    ~MyWidget();
 
protected:
    virtual void mousePressEvent( QMouseEvent* );
    virtual void mouseMoveEvent( QMouseEvent* );
    virtual void mouseReleaseEvent( QMouseEvent* );
 
private:
    int    mFixedX;
    bool  mDragging;
}

class MyWidget : public QWidget
{
    Q_OBJECT
public:
    MyWidget( QWidget* parent = NULL );
    ~MyWidget();

protected:
    virtual void mousePressEvent( QMouseEvent* );
    virtual void mouseMoveEvent( QMouseEvent* );
    virtual void mouseReleaseEvent( QMouseEvent* );

private:
    int    mFixedX;
    bool  mDragging;
}

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Should work fine.

Marcel.