diff -u -N -r ReactOS-0.3.11-old/dll/win32/user32/windows/messagebox.c ReactOS-0.3.11/dll/win32/user32/windows/messagebox.c
--- ReactOS-0.3.11-old/dll/win32/user32/windows/messagebox.c	Mon Mar 29 21:08:52 2010
+++ ReactOS-0.3.11/dll/win32/user32/windows/messagebox.c	Sat Apr  3 22:52:41 2010
@@ -72,17 +72,200 @@
   int nButtons;
   LONG *Btns;
   UINT Timeout;
+  WNDPROC ButtonOldProcs[MSGBOXEX_MAXBTNS];
 } MSGBOXINFO, *PMSGBOXINFO;

 /* INTERNAL FUNCTIONS ********************************************************/

+static VOID copy_msgbox_in_text(HWND hwnd, PMSGBOXINFO mbi)
+{
+    HWND hwndText;
+    int i, j, k;
+    int cch, cchTitle, cchText, cchLines, cchButtons, cchButton;
+    LPWSTR psz, pszTitle, pszText;
+    HGLOBAL hGlobal;
+    WCHAR szButton[32];
+    LPWSTR pch;
+    static const WCHAR szLine[30] =
+    {'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-',
+     '-','-','-','-','-','-','-','-','-','-','-','-','\r','\n',0};
+
+    cchTitle = GetWindowTextLengthW(hwnd) + 1;
+    hwndText = GetDlgItem(hwnd, MSGBOX_IDTEXT);
+    cchText = GetWindowTextLengthW(hwndText) + 1;
+    cchLines = 4 * 29;
+    cchButtons = 3 * (32 + 3);
+
+    pszTitle = (LPWSTR) RtlAllocateHeap(GetProcessHeap(), 0, cchTitle * sizeof(WCHAR));
+    if (pszTitle == NULL)
+        return;
+    pszText = (LPWSTR) RtlAllocateHeap(GetProcessHeap(), 0, cchText * sizeof(WCHAR));
+    if (pszText == NULL)
+    {
+        RtlFreeHeap(GetProcessHeap(), 0, pszTitle);
+        return;
+    }
+    if (GetWindowTextW(hwnd, pszTitle, cchTitle) == 0 ||
+        GetWindowTextW(hwndText, pszText, cchText) == 0)
+    {
+        RtlFreeHeap(GetProcessHeap(), 0, pszTitle);
+        RtlFreeHeap(GetProcessHeap(), 0, pszText);
+        return;
+    }
+
+    pch = pszText;
+    while(*pch)
+    {
+        if (*pch == L'\n')
+            cchText++;
+        pch++;
+    }
+
+    cch = cchTitle + 2 + cchText + cchLines + cchButtons + 2 + 1;
+    hGlobal = GlobalAlloc(GMEM_SHARE | GHND, cch * sizeof(WCHAR));
+    if (hGlobal == NULL)
+    {
+        RtlFreeHeap(GetProcessHeap(), 0, pszTitle);
+        RtlFreeHeap(GetProcessHeap(), 0, pszText);
+        return;
+    }
+
+    psz = (LPWSTR) GlobalLock(hGlobal);
+    if (psz == NULL)
+    {
+        RtlFreeHeap(GetProcessHeap(), 0, pszTitle);
+        RtlFreeHeap(GetProcessHeap(), 0, pszText);
+        GlobalFree(hGlobal);
+        return;
+    }
+
+    strcpyW(psz, szLine);
+    strcatW(psz, pszTitle);
+    strcatW(psz, L"\r\n");
+    strcatW(psz, szLine);
+    j = strlenW(psz);
+    /* convert \n to \r\n */
+    for(i = 0; i < cchText; i++)
+    {
+        if (pszText[i] == L'\n')
+            psz[j++] = L'\r';
+        psz[j++] = pszText[i];
+    }
+    psz[j] = 0;
+    strcatW(psz, szLine);
+
+    for(i = 0; i < mbi->nButtons; i++)
+    {
+        GetDlgItemTextW(hwnd, mbi->Btns[i], szButton, 32);
+        cchButton = strlenW(szButton);
+        j = strlenW(psz);
+        /* skip '&' */
+        for(k = 0; k < cchButton; k++)
+        {
+            if (szButton[k] == L'&')
+                continue;
+            psz[j++] = szButton[k];
+        }
+        psz[j] = 0;
+        strcatW(psz, L"   ");
+    }
+    strcatW(psz, L"\r\n");
+    strcatW(psz, szLine);
+    GlobalUnlock(hGlobal);
+
+    if (OpenClipboard(hwnd))
+    {
+        EmptyClipboard();
+        SetClipboardData(CF_UNICODETEXT, hGlobal);
+        CloseClipboard();
+    }
+    else
+    {
+        GlobalFree(hGlobal);
+    }
+    RtlFreeHeap(GetProcessHeap(), 0, pszTitle);
+    RtlFreeHeap(GetProcessHeap(), 0, pszText);
+}
+
+static LRESULT CALLBACK Button0Proc( HWND hwnd, UINT message,
+                                     WPARAM wParam, LPARAM lParam )
+{
+    PMSGBOXINFO mbi;
+    HWND owner;
+    mbi = (PMSGBOXINFO)GetPropW(owner, L"ROS_MSGBOX");
+    switch(message)
+    {
+    case WM_KEYDOWN:
+        owner = GetWindow(hwnd, GW_OWNER);
+        if (wParam == L'C' && GetAsyncKeyState(VK_CONTROL) < 0 &&
+            GetAsyncKeyState(VK_MENU) >= 0)
+        {
+            copy_msgbox_in_text(owner, mbi);
+            break;
+        }
+        /* FALL THRU */
+
+    default:
+        return CallWindowProc(mbi->ButtonOldProcs[0], hwnd, message, wParam, lParam);
+    }
+    return 0;
+}
+
+static LRESULT CALLBACK Button1Proc( HWND hwnd, UINT message,
+                                     WPARAM wParam, LPARAM lParam )
+{
+    PMSGBOXINFO mbi;
+    HWND owner;
+    mbi = (PMSGBOXINFO)GetPropW(owner, L"ROS_MSGBOX");
+    switch(message)
+    {
+    case WM_KEYDOWN:
+        owner = GetWindow(hwnd, GW_OWNER);
+        if (wParam == L'C' && GetAsyncKeyState(VK_CONTROL) < 0 &&
+            GetAsyncKeyState(VK_MENU) >= 0)
+        {
+            copy_msgbox_in_text(owner, mbi);
+            break;
+        }
+        /* FALL THRU */
+
+    default:
+        return CallWindowProc(mbi->ButtonOldProcs[1], hwnd, message, wParam, lParam);
+    }
+    return 0;
+}
+
+static LRESULT CALLBACK Button2Proc( HWND hwnd, UINT message,
+                                     WPARAM wParam, LPARAM lParam )
+{
+    PMSGBOXINFO mbi;
+    HWND owner;
+    mbi = (PMSGBOXINFO)GetPropW(owner, L"ROS_MSGBOX");
+    switch(message)
+    {
+    case WM_KEYDOWN:
+        owner = GetWindow(hwnd, GW_OWNER);
+        if (wParam == L'C' && GetAsyncKeyState(VK_CONTROL) < 0 &&
+            GetAsyncKeyState(VK_MENU) >= 0)
+        {
+            copy_msgbox_in_text(owner, mbi);
+            break;
+        }
+        /* FALL THRU */
+
+    default:
+        return CallWindowProc(mbi->ButtonOldProcs[2], hwnd, message, wParam, lParam);
+    }
+    return 0;
+}
+
 static INT_PTR CALLBACK MessageBoxProc( HWND hwnd, UINT message,
                                         WPARAM wParam, LPARAM lParam )
 {
   int i;
   PMSGBOXINFO mbi;
   HELPINFO hi;
-  HWND owner;
+  HWND owner, button;

   switch(message) {
     case WM_INITDIALOG:
@@ -110,6 +293,19 @@
         SetFocus(GetDlgItem(hwnd, mbi->DefBtn));
         if(mbi->Timeout && (mbi->Timeout != (UINT)-1))
           SetTimer(hwnd, 0, mbi->Timeout, NULL);
+        i = 0;
+        button = GetDlgItem(hwnd, mbi->Btns[i]);
+        mbi->ButtonOldProcs[i++] = (WNDPROC)SetWindowLongPtrW(button, GWLP_WNDPROC, (LONG_PTR)Button0Proc);
+        if (i < mbi->nButtons)
+        {
+          button = GetDlgItem(hwnd, mbi->Btns[i]);
+          mbi->ButtonOldProcs[i++] = (WNDPROC)SetWindowLongPtrW(button, GWLP_WNDPROC, (LONG_PTR)Button1Proc);
+          if (i < mbi->nButtons)
+          {
+            button = GetDlgItem(hwnd, mbi->Btns[i]);
+            mbi->ButtonOldProcs[i] = (WNDPROC)SetWindowLongPtrW(button, GWLP_WNDPROC, (LONG_PTR)Button2Proc);
+          }
+        }
       }
       return 0;