Layered Application

**patrik08** · 3rd April 2008, 09:10

Originally Posted by csvivek

How to go about adding the layers in GV?
Also is Map(Dted,tiff and DGN) related activities simplified in GV?

How to change the color of an Item added to the scene based on some condition? say after 2 ms i need to change the color of an object drawn at (0,0) to green.

IMO have a look on http://sourceforge.net/projects/sketchbook/ QT based ..
it chance color or delete item quickly. Only port to QGraphicsView

**aamer4yu** · 3rd April 2008, 09:50

How to change the color of an Item added to the scene based on some condition? say after 2 ms i need to change the color of an object drawn at (0,0) to green.

You can have a color attribute in the graphicsItem. Based on this u color the item. Changing color is just a matter of changing the value of the variable. Simple..

Also for ur needs GraphicsView wud be best. It provides zoom facility.
Selecting and removing objects is also easy. When u click in a scene, u get a list of items on that point. From the list u can select and remove the desired item/layer.