[PATCH] include/winuser.h: add tagDROPSTRUCT struct

[Austin English]

Fixes https://bugs.winehq.org/show_bug.cgi?id=45026

Note: it doesn't yet build. I plan to submit more fixes over the next
few weeks as time permits.

Signed-off-by: Austin English <austinenglish at gmail.com>
---
 include/winuser.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/winuser.h b/include/winuser.h
index 86cdbf6a15..3501af53f6 100644
--- a/include/winuser.h
+++ b/include/winuser.h
@@ -2148,6 +2148,16 @@ typedef struct tagCBTACTIVATESTRUCT
 } CBTACTIVATESTRUCT, *LPCBTACTIVATESTRUCT;
 
 
+typedef struct tagDROPSTRUCT
+{
+    HWND      hwndSource;
+    HWND      hwndSink;
+    DWORD     wFmt;
+    ULONG_PTR dwData;
+    POINT     ptDrop;
+    DWORD     dwControlData;
+} DROPSTRUCT, *PDROPSTRUCT, *LPDROPSTRUCT;
+
 /* modifiers for RegisterHotKey */
 #define	MOD_ALT		0x0001
 #define	MOD_CONTROL	0x0002
-- 
2.16.1