bValid = CwIsHandleValid(hObject)
bValid (boolean) True (1) if the given handle is valid,
false (0) otherwise.
hObject (handle) Any handle.
/* This function behaves exactly like CwGetObjectCount except that it shouldn't
be called between calls to CwFindFirstObject or CwFindNextObject. */
objcount:procedure
count = 0
o = CwFindFirstObject( CwGetCurrentView() )
do while CwIsHandleValid(o)
count = count + 1
o = CwFindNextObject( o )
end
return o
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