[PATCH 0/1] MR11133: win32u: Fix signed coordinate extraction in drag_drop_call.

[zhengyong chen (＠chenzhengyong)]

Xdnd protocol uses 16-bit signed coordinates for mouse position. When the cursor is on a secondary monitor left of the primary, coordinates are negative. LOWORD/HIWORD extract the low 16 bits as unsigned, causing sign loss when assigning to RECT fields.

Fix by casting LOWORD/HIWORD result to SHORT before assignment, ensuring proper sign extension on both 32-bit and 64-bit Wine.

Test on deepin v25 & UOS V20

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https://gitlab.winehq.org/wine/wine/-/merge_requests/11133