win32u: Use user message packing for WM_DELETEITEM.

dlls/user32/winproc.c

@@ -843,19 +843,8 @@ BOOL unpack_message( HWND hwnd, UINT message, WPARAM *wparam, LPARAM *lparam,
     case WM_GETMINMAXINFO:
     case WM_DRAWITEM:
     case WM_MEASUREITEM:
-        break;
     case WM_DELETEITEM:
-    {
-        DELETEITEMSTRUCT dls;
-        if (size < sizeof(ps->dls)) return FALSE;
-        dls.CtlType    = ps->dls.CtlType;
-        dls.CtlID      = ps->dls.CtlID;
-        dls.itemID     = ps->dls.itemID;
-        dls.hwndItem   = unpack_handle( ps->dls.hwndItem );
-        dls.itemData   = (ULONG_PTR)unpack_ptr( ps->dls.itemData );
-        memcpy( *buffer, &dls, sizeof(dls) );
         break;
-    }
     case WM_COMPAREITEM:
     {
         COMPAREITEMSTRUCT cis;
@@ -1160,6 +1149,7 @@ BOOL WINAPI User32CallWindowProc( struct win_proc_params *params, ULONG size )
         case EM_REPLACESEL:
         case WM_GETMINMAXINFO:
         case WM_MEASUREITEM:
+        case WM_DELETEITEM:
         {
             LRESULT *result_ptr = (LRESULT *)buffer - 1;
             *result_ptr = result;

dlls/win32u/message.c

@@ -462,6 +462,18 @@ static BOOL unpack_message( HWND hwnd, UINT message, WPARAM *wparam, LPARAM *lpa
         memcpy( *buffer, &mis, sizeof(mis) );
         break;
     }
+    case WM_DELETEITEM:
+    {
+        DELETEITEMSTRUCT dls;
+        if (size < sizeof(ps->dls)) return FALSE;
+        dls.CtlType    = ps->dls.CtlType;
+        dls.CtlID      = ps->dls.CtlID;
+        dls.itemID     = ps->dls.itemID;
+        dls.hwndItem   = wine_server_ptr_handle( ps->dls.hwndItem );
+        dls.itemData   = (ULONG_PTR)unpack_ptr( ps->dls.itemData );
+        memcpy( *buffer, &dls, sizeof(dls) );
+        break;
+    }
     case WM_WINE_SETWINDOWPOS:
     {
         WINDOWPOS wp;
@@ -1255,6 +1267,9 @@ size_t user_message_size( UINT message, WPARAM wparam, LPARAM lparam, BOOL other
     case WM_MEASUREITEM:
         size = sizeof(MEASUREITEMSTRUCT);
         break;
+    case WM_DELETEITEM:
+        size = sizeof(DELETEITEMSTRUCT);
+        break;
     }
 
     return size;

dlls/win32u/tests/win32u.c

@@ -1624,6 +1624,7 @@ static void test_wndproc_hook(void)
     static const DRAWITEMSTRUCT drawitem_in = { .itemID = 1 };
     static const MEASUREITEMSTRUCT mis_in = { .itemID = 1 };
     static const MEASUREITEMSTRUCT mis_out = { .itemID = 2, .CtlType = 3, .CtlID = 4, .itemData = 5 };
+    static const DELETEITEMSTRUCT dis_in = { .itemID = 1 };
 
     static const struct lparam_hook_test lparam_hook_tests[] =
     {
@@ -1718,6 +1719,11 @@ static void test_wndproc_hook(void)
             .lparam_size = sizeof(mis_in), .lparam = &mis_in, .change_lparam = &mis_out,
             .check_size = sizeof(mis_in),
         },
+        {
+            "WM_DELETEITEM", WM_DELETEITEM, .wparam = 10,
+            .lparam_size = sizeof(dis_in), .lparam = &dis_in, .poison_lparam = TRUE,
+            .check_size = sizeof(dis_in),
+        },
         /* messages that don't change lparam */
         { "WM_USER", WM_USER },
         { "WM_NOTIFY", WM_NOTIFY },

dlls/wow64win/user.c

@@ -684,6 +684,20 @@ static size_t packed_message_64to32( UINT message, WPARAM wparam,
             memcpy( params32, &mis32, sizeof(mis32) );
             return sizeof(mis32);
         }
+
+    case WM_DELETEITEM:
+        {
+            DELETEITEMSTRUCT32 dis32;
+            const DELETEITEMSTRUCT *dis64 = params64;
+
+            dis32.CtlType  = dis64->CtlType;
+            dis32.CtlID    = dis64->CtlID;
+            dis32.itemID   = dis64->itemID;
+            dis32.hwndItem = HandleToLong( dis64->hwndItem );
+            dis32.itemData = dis64->itemData;
+            memcpy( params32, &dis32, sizeof(dis32) );
+            return sizeof(dis32);
+        }
     }
 
     memmove( params32, params64, size );
@@ -3167,6 +3181,7 @@ static LRESULT message_call_32to64( HWND hwnd, UINT msg, WPARAM wparam, LPARAM l
 
             dis.CtlType  = dis32->CtlType;
             dis.CtlID    = dis32->CtlID;
+            dis.itemID   = dis32->itemID;
             dis.hwndItem = LongToHandle( dis32->hwndItem );
             dis.itemData = dis32->itemData;
             return NtUserMessageCall( hwnd, msg, wparam, (LPARAM)&dis, result_info, type, ansi );