[Bug 1503] executing old 16-bit program leads to unhandled exception in scroll.c

[Wine Bugs]

http://bugs.winehq.com/show_bug.cgi?id=1503





------- Additional Comments From saulius.krasuckas at elst.vtu.lt  2003-02-06 12:06 -------
hi Duane, that's a no problem :)

  i have read through bodies of some functions and saw some unexpected details.
one for example could be that 32-to-16 bit message translations. at first i
thought the cause of crash is translation, wrongly truncating "wParam". after i
read some old win3.1 api help and thought both the pointers, and both integers
they are pointing to should be 16-bit wide.
  it seems, wine passes 32-bit pointers to win16 subroutines. here arises
question for me: why? shouldn't that address/pointers be translated alltogether
somewhere between the:

  16 0x407fbb59 (GetScrollRange+0x55(hwnd=0x10039, nBar=0x2, lpMin=0x415a2428,
lpMax=0x415a242c) [scroll.c:1837] in user32.dll.so) (ebp=415a2410)

  17 0x407dccf6 (GetScrollRange16+0x3a(hwnd=0x39, nBar=0x2, lpMin=0x40488362,
lpMax=0x40488360) [wnd16.c:493] in user32.dll.so) (ebp=415a243c)

  or somewhere else?

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