[Solved]about the coordinates of my screen. Qt

Project try

I've posted about a problem yesterday of letting the widget completely transparent , but still haven't solved it... any ways there was another solution which it taking a picture of my primary screen and set it as the background of my widget and the user can select what he wants which is a nice idea and it's working.

Except at the last thing I should do , which is saving the picture just to check if it's working and I got a weird problem ,

when I drag the mouse from the top left it works fine..

but when I drag from anywhere like top right it gives me a wrong picture " wrong place or coordinates "

first the code that sets the background of my dialog:
@
this->setWindowFlags(Qt::FramelessWindowHint|Qt::WindowStaysOnTopHint);
this->setWindowState(Qt::WindowFullScreen);
Image=new QPixmap;
screen=QGuiApplication::primaryScreen();
*Image=screen->grabWindow(0);
pal.setBrush(this->backgroundRole(),QBrush(*Image));
this->setPalette(pal);
@
second the mouse events:
@
void FramelessWindow::mousePressEvent(QMouseEvent *event){
if(event->button()==Qt::LeftButton){
origin= event->pos();
rubberBand->setGeometry(QRect(origin,QSize()));
rubberBand->show();

    }
}

void FramelessWindow::mouseMoveEvent(QMouseEvent *event){
    rubberBand->setGeometry(QRect(origin,event->pos()).normalized());

   /*
    QRect Rectangle(origin,event->pos());
    QPixmap image=QPixmap::grabWidget(this,Rectangle);



    image.save("TEST.png","png"); // same problem here and in mousereleaseevent
*/


}

@
the release event:
@
void FramelessWindow::mouseReleaseEvent(QMouseEvent *event){

    rubberBand->hide();
    QRect Rectangle(origin,event->pos());
    QPixmap image=QPixmap::grabWidget(this,Rectangle);
    image.save("TEST.png","png");
close();


}

@

Only when I drag from top left to down right it works.

Project try

Finally figured out why it causes this :D

I've just read about the function normalized and it solved it:
@
QPoint a= mapToGlobal(origin);
QPoint b=event->globalPos();
QRect Rectangle(a,b);
//QPixmap image=QPixmap::grabWidget(this,Rectangle);
QPixmap image=QWidget::grab(Rectangle.normalized());

image.save("TEST.png","png");

@

andreyc

You need to "normalize":http://qt-project.org/doc/qt-5/qrect.html#normalized the rectangle.

[EDIT] I see you have found it already :-)

Project try

^

Thank you for all your help , I wouldn't have solved the problem in my last post without your help :D