in MainWindow::OnCreate, the tree is populated with items from the root.
in TreeHandler::OnItemExpanding, the tree item -> populate method is called.

  CINFO= {
     00 : { name:acName, type:char4 }
     04 : { name:disp,   type:BYTE }
     05 : { name:type,   type:BYTE }
     06 : { name:cMethods,type:WORD }
     08 : { name:ppfnmethods, type:DWORD }
     0c : { name:pdwSig, type:DWORD }
     10 : { name:pServer, type:PROCESSPTR }
  }
  HDATA= {
     00 : { name:fwd,  type:DWORD }
     04 : { name:back,  type:DWORD }
     08 : { name:hValue,  type:DWORD }
     0c : { name:lock,  type:DWORD }
     10 : { name:ref,  type:DWORD }
     14 : { name:pci,  type:CINFOPTR }
     18 : { name:pvObj,  type:DWORD }
     1c : { name:dwInfo,  type:DWORD }

  }


example tree:

kdata
    |
0c  +-hCurProc:aeed671a            HANDLE
    |     |
    |     +-HDATA:8eed6718         HDATA
    |         |
    |         +-pvObj:8c2e80f0     PROCESS
    |         |   |
    |         |   +--oe:8c2e8140   openext_t
    |         |       |
    |         |       +-handle:aed31832  HANDLE
    |         |       +-NamePtr:8f0cce98 NamePtr
    |         |            |
    |         |            +--wPool:0004      WORD
    |         |            +--name:8f0cce9a   WCHAR[260]
    |         |        
    |         |    
    |         +-pci:8c082160       CINFO
    |
300 +-KINX_PROCARRAY:8c2e72e0   PROCESSARRAY
          |
          +-[0]:8c2e72e0              PROCESS
          |  |
          |  +----procfield1
          |
          +-[1]:8c2e73d0              PROCESS
          |  |
          |  +----procfield1
     
summary_string()   - gets filename for filehandle, or processname for process, etc.
display_value()    - gets memory contents for most, or struct/array offset for structs/arrays
dereference_value()- gets HDATA for handles, ptrvalue for others.
types may be variable, for instance pvObj from HDATA
arrays need a way to get a variable size.

the user should be able to create and edit types.