Note:the following results are for 9.59

No I was wrong, the WM_KILLFOCUS message was only passed due to me clicking another window, hiding the messagebox. It occurs after the error so is not the problem here.

The first SendMessage called is WM_SETICON which returns a 0, but even recoding to make it return a 1 didn't help, the line is quite a ways from the messagebox call anyways.

The next SendMessage called is WM_NOTIFYFORMAT which returns a 1

The SendMessage before the error is WM_IME_CONTROL (283) with wparam=IMC_CLOSESTATUSWINDOW(21)

MSDN info: http://msdn2.microsoft.com/en-us/library/ms776174(VS.85).aspx

could be a result of "fixme:imm:ImmGetDefaultIMEWnd (0x10024 - (nil) 0x12eaf0 ): semi-stub"

Here is a snippet from WINEDEBUG=+win,+msg,+relay ../../wine/wine-0.9.59/wine SSF 2>&1 |less -i

0009:Call user32.SendMessageA(00010028,00000283,00000021,00000000) ret=0040455c
trace:msg:WINPROC_CallProcAtoW (hwnd=0x10028,msg=WM_IME_CONTROL,wp=00000021,lp=00000000)
0009:Call window proc 0x7e391f20 (hwnd=0x10028,msg=WM_IME_CONTROL,wp=00000021,lp=00000000)
0009:Ret window proc 0x7e391f20 (hwnd=0x10028,msg=WM_IME_CONTROL,wp=00000021,lp=00000000) retval=00000001
0009:Ret user32.SendMessageA() retval=00000001 ret=0040455c
0009:Call KERNEL32.GetLastError() ret=005645c3
0009:Ret KERNEL32.GetLastError() retval=00000000 ret=005645c3
0009:Call KERNEL32.TlsGetValue(00000002) ret=00564470
0009:Ret KERNEL32.TlsGetValue() retval=7ee085e4 ret=00564470
0009:Call KERNEL32.FlsGetValue(00000000) ret=005645d2
0009:Ret KERNEL32.FlsGetValue() retval=0c970118 ret=005645d2
0009:Call KERNEL32.SetLastError(00000000) ret=0056462d
0009:Ret KERNEL32.SetLastError() retval=00000000 ret=0056462d
0009:Call user32.MessageBoxA(00010024,0033f878 "SendMessage() error.\nFile : ./main.cpp\nLine : 1100\nFunction : WinMain",00000000,00000000) ret=00404307

WARN--Unless you know what you're doing(unlike me), I suggest you not try the following as it may lockup your desktop!!! <- extra exclamations for emphasis !!!

[In Progess--editing]

Noting the function locations in the code of the functions called during this error:

LRESULT WINAPI SendMessageA( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam )
message.c line 2569

static BOOL send_message( struct send_message_info *info, DWORD_PTR *res_ptr, BOOL unicode )

message,c line 2417

WINPROC_CallProcAtoW

winproc.c line 762

callback used

static LRESULT send_inter_thread_callback( HWND hwnd, UINT msg, WPARAM wp, LPARAM lp,
LRESULT *result, void *arg )

message.c line 2398

static LRESULT send_inter_thread_message( const struct send_message_info *info, LRESULT *res_ptr )
message.c line 2378

static LRESULT retrieve_reply( const struct send_message_info *info, size_t reply_size, LRESULT *result )
message.c line 2338

Modified winproc.c around line 1010

added:

case WM_IME_CONTROL:
ret = callback( hwnd, msg, wParam, lParam, result, arg );
if(wParam==0x21)
{
*result = 0; /* FIXME: Hack for IMC_CLOSESTATUSWINDOW of WM_IME_CONTROL */
}
break;

no messagebox error, but program closes suddenly. In winedbg mode I can open menus, but the program gets to a point where it won't respond and locks up my ubuntu windows temporarily.

The program will now create SSF.ini, but fails to create Settings.ini.