...
I want change it to

typedef struct _GDIOBJHDR
{
    HGDIOBJ     hHmgr; 
    WORD        Count;
    WORD        Type;
    ULONG       cExcLock; 
    ULONG       Tid;
}GDIOBJHDR, PGDIOBJHDR;

 hHmgr
Handle for this object.

Count
A counter of a kind

Type
which GDI Object type it is 

cExcLock
if the object is lock or not

Tid
The Thread it belong to

I hope we can do this change and I want comment and verify from Timo and Jim about this change