What is the Best Way to Parse and Store User Input from a CTreeCtrl Dialog?

[Stuck At Zero]

I'm trying to build an app which displays proprietary binary data on a virtual grid. Since the number of rows can be in the millions, I'm trying to implement a way to filter out the undesired data. I was asked to prompt users to select filtering by way of a tree control. My tree is 4 levels deep. At the root level, I have 8 nodes (called Bus). Each bus has 32 children nodes (called RT #). Each RT node has 2 children nodes (called Transmit / Receive). Each Transmit and Receive node has 32 children nodes (called MSG #). So top-down, my tree is essentially 8 x 32 x 2 x 32 nodes. I have been asked to also implement this tree in such a fashion that if the user only selects a particular parent node and does not select any child node beneath this parent node, that this is to mean a wild card for all descendant nodes beneath that selected parent node. I am doing things in MFC and it seems I cannot do a bit array. I've tried using a 4 dimensional bool array but I am forced to store true / false values utilizing all 4 dimensions (which makes it impossible to store the wildcard condition mentioned above for anything less than 4 dimensions.) What is the best way to encapsulate the user-defined filtering right before I am about to parse through a source file on-the-fly?

[Member 754960]

Why not bitfields?

struct filter
{
unsigned Bus : 3; // range : 0 - 7
unsigned Route : 5; // range : 0 - 31
unsigned Xmit : 1; // range : 0 - 1 // constraint: exclusive with Rcv
unsigned Rcv : 1; // range : 0 - 1 // constraint: exclusive with Xmit
unsigned Msg : 5; // range : 0 - 31
unsigned dummy : 1; // padding to 16 bits
};