https://bugs.winehq.org/show_bug.cgi?id=47427
--- Comment #2 from Sagawa sagawa.aki+winebugs@gmail.com --- This is due to WM_NOTIFY handling. configurator.exe just expects UDN_DELTAPOS when it receives WM_NOTIFY from an up down control. It always treat LPARAM as an NMUPDOWN pointer.
In detail, 00402E40 | 83F8 4E | cmp eax,4E | Is this WM_NOTIFY? 00402E43 | 0F85 0A020000 | jne configurator.403053 | Jump not equal 00402E49 | 8B8424 6C010000 | mov eax,dword ptr ss:[esp+16C] | move LPARAM(NMHDR pointer) to eax 00402E50 | 8B48 04 | mov ecx,dword ptr ds:[eax+4] | NMHDR.idFrom to ecx 00402E53 | 81F9 42040000 | cmp ecx,442 | does control ID match with #442? 00402E59 | 0F85 97000000 | jne configurator.402EF6 | Jump not equal 00402E5F | 33DB | xor ebx,ebx | set ebx zero 00402E61 | 3958 10 | cmp dword ptr ds:[eax+10],ebx | compare ebx and NMUPDOWN.iDelta, OMG
Wine's up down control sends WM_NOTIFY with UDN_DELTAPOS code and NM_RELEASEDCAPTURE code on clicking. Native's only sends WM_NOTIFY with UDN_DELTAPOS code then.