(Semi-) transparent Drag and Drop

[hunsrus]

hi everybody,

after a long time searching google i found this forum, in hope to find some help here. i would like to drag some items from one listmodel to another. that works already fine. but to beef up my user interface i would like to make the drag contents visible to the user semitransparent. i hope you can slightly imagine what i want. it is like the drag-function for contacts skype provides. i hope you can help me.
excuse please my english, which is obviously not my native language

greets

hunsrus

[aamer4yu]

You can use QDrag::setPixmap .
Also refer to Draggable Icons examples in Drag and Drop section of Qt Demo.

QPixmap tempPixmap = pixmap;
     QPainter painter;
     painter.begin(&tempPixmap);
     painter.fillRect(pixmap.rect(), QColor(127, 127, 127, 127));
     painter.end();
 
     child->setPixmap(tempPixmap);

QPixmap tempPixmap = pixmap;
     QPainter painter;
     painter.begin(&tempPixmap);
     painter.fillRect(pixmap.rect(), QColor(127, 127, 127, 127));
     painter.end();

     child->setPixmap(tempPixmap);

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You can try something like that. Making a pixmap and setting it with the transparent values of the image .

Hope you get the idea

[hunsrus]

hmm

do i have to subclass my QTableView and override the drag and drop methods to get hold of QDrag object?

Ill take a look at the draggable icons demo!

cheers

[T1c4L]

Hi!

I wanted to apply transparency to my drag n drop too!

How do I implement such transparency when im using the AbstractItemModel Drag and Drop Implementation?

Thanks in advance,
Mike

[T1c4L]

Plss someone help or give me a clue on how to do it =(

[caduel]

Yes, you do have to subclass at least the part that creates the pixmap
(QAbstractItemView::startDrag).

If you should find another way (which I doubt), let us know of it.