Normally, need this method to indicate that the dialog box is trapping keystrokes
But, we want the textfield to have the focus, so, this is commented out.
Normally, need this method to indicate that the dialog box is trapping keystrokes
But, we want the textfield to have the focus, so, this is commented out.
Creates a MatrixDifference object using the name of the node,
the name of the parent in the user-built tree and the name of
the parent in the correct tree as arguments.
The inner set of conditions are simple cases that can occur:
1) The starting and ending points are the same
2) The starting and ending points are similar, as defined by a derived class,
and there is no selection
3) There is a selection
4) Default case
Not only displays multiple images, gets user to select an image,
BUT ALSO keeps track of all choices and signals true only when user
has selected all correct images
selected by the user