Hi Thorsten,
osg::ref_ptr<TGBaseWidget> WidgNode01 = new TGBaseWidget(2,1);
This is pretty basic... Look at this:
for(i=count_width; i>0; i--)
{
(1) ElementLower.push_back(
new TGWidgetElement(posX, posY, "WidgElementSideLower.png"));
posX += 15;
posY += 15;
(2) int elementnumber = i - 1;
std::cout << elementnumber << std::endl;
(3) ElementLower[elementnumber].get()->setDataVariance(
osg::Object::DYNAMIC);
this->addChild(ElementLower[elementnumber].get());
}
Now, trace this in your head. When count_width is 2 (which is the case
when you call the constructor as you did above), i starts at 2. Then,
you push_back one TGWidgetElement into ElementLower at (1), so
ElementLower contains 1 element at index 0. Then you calculate
elementnumber as i-1 = 2-1 = 1 at (2), and then you try to access
ElementLower[elementnumber] which is ElementLower[1]. That doesn't exist
(because ElementLower contains one element at index 0, nothing at index
1. Thus you get a crash, because you tried to access a vector with an
index out of its bounds.
There are a few ways to fix this, but I'll let you find them yourself.
It's a very basic bug which you could have found for yourself by running
your code in a debugger, setting a breakpoint at the start of the for
loop, and then running one line at a time to check the values as you go.
Hope this helps,
J-S
--
______________________________________________________
Jean-Sebastien Guay [email protected]
http://www.cm-labs.com/
http://whitestar02.webhop.org/
_______________________________________________
osg-users mailing list
[email protected]
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
