gdi32: use HandleToULong inline function to convert handle to index instead of casting

[Dmitry Timoshkov]

Daniel Lehman <dlehman at esri.com> wrote:

> 0xffffffff000026a8 becomes 0xc00009aa instead of just 0x9aa

It can't, the code explicitly casts handle to unsigned before the shift.

-- 
Dmitry.