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In Delphi 6 WPARAM is declared as being signed:
WPARAM = Longint;
In Delphi 2010 WPARAM is declared as being signed:
WPARAM = INT_PTR;
But in XE2 it is declared as being unsigned:
WPARAM = UINT_PTR;
The official Windows definition is:
typedef UINT_PTR WPARAM;
This matches with XE2.
Does anyone know whether the change was made for XE or for XE2?
In Delphi XE
WPARAM = INT_PTR;so the change was introduced in XE2.