[Bug 55582] Civilization 2 crashes when setting up new game

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55582

--- Comment #6 from Béla Gyebrószki  ---
(In reply to Rafał Mużyło from comment #5)
> Any idea what that patch exactly changes in the executable ?

The patch has an "extended version" by the same author, called Civilization II
User Interface Additions. It is written in Delphi 7 and the author released the
source code of it:
https://github.com/FoxAhead/Civ2-UI-Additions/releases/tag/v1.20.3

There is an ASM snippet in Civ2UIA.dpr which probably deals with the issue:
procedure PatchEditBox64Bit(); register;
asm
    push  GCL_CBWNDEXTRA
    mov   eax, [ebp + $08]
    push  eax
    call  [$006E7E9C]   // GetClassLongA
    mov   ebx, eax
    sub   al, 4
    push  eax
    mov   eax, [ebp + $08]
    push  eax
    call  [$006E7E2C]   // GetWindowLongA
    sub   ebx, 8
    mov   [ebp - $08], eax
    mov   eax, [ebp - $0C]
    push  ebx
    mov   eax, [ebp + $08]
    push  eax
    call  [$006E7E2C]   // GetWindowLongA
    mov   [ebp - $14], eax
    mov   eax, [ebp + $0C]
    mov   [ebp - $1C], eax
    push  $005D2C94
    ret
end;

Should be noted that the patch is only needed for 64-bit Windowses whereas the
crash happens in both 32-bit and WOW64 Wine.