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user32: Pack the structure for WM_DDE_ACK to allow crossing 32/64 boundaries.

oldstable
Alexandre Julliard 2010-03-30 20:42:09 +02:00
parent 2de2222aec
commit 01578f51ba
1 changed files with 6 additions and 3 deletions
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9
dlls/user32/message.c
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@ -2000,8 +2000,9 @@ static BOOL post_dde_message( struct packed_message *data, const struct send_mes
HGLOBAL h = dde_get_pair( (HANDLE)uiHi );
if (h)
{
ULONGLONG hpack = pack_ptr( h );
/* send back the value of h on the other side */
push_data( data, &h, sizeof(HGLOBAL) );
push_data( data, &hpack, sizeof(hpack) );
lp = uiLo;
TRACE( "send dde-ack %lx %08lx => %p\n", uiLo, uiHi, h );
}
@ -2102,11 +2103,13 @@ static BOOL unpack_dde_message( HWND hwnd, UINT message, WPARAM *wparam, LPARAM
case WM_DDE_ACK:
if (size)
{
ULONGLONG hpack;
/* hMem is being passed */
if (size != sizeof(HGLOBAL)) return FALSE;
if (size != sizeof(hpack)) return FALSE;
if (!buffer || !*buffer) return FALSE;
uiLo = *lparam;
memcpy( &hMem, *buffer, size );
memcpy( &hpack, *buffer, size );
hMem = unpack_ptr( hpack );
uiHi = (UINT_PTR)hMem;
TRACE("recv dde-ack %lx mem=%lx[%lx]\n", uiLo, uiHi, GlobalSize( hMem ));
}