wordpad: Show error when user tries to add more than max tab stops.

programs/wordpad/En.rc

@@ -239,5 +239,6 @@ BEGIN
     STRING_WRITE_ACCESS_DENIED,       "You do not have access to save the file."
     STRING_OPEN_FAILED,               "Could not open the file."
     STRING_OPEN_ACCESS_DENIED,        "You do not have access to open the file."
-    STRING_PRINTING_NOT_IMPLEMENTED, "Printing not implemented"
+    STRING_PRINTING_NOT_IMPLEMENTED,  "Printing not implemented"
+    STRING_MAX_TAB_STOPS,             "Cannot add more than 32 tab stops."
 END

programs/wordpad/wordpad.c

@@ -1636,13 +1636,16 @@ static INT_PTR CALLBACK tabstops_proc(HWND hWnd, UINT message, WPARAM wParam, LP
                         if(SendMessageW(hTabWnd, CB_FINDSTRINGEXACT, -1, (LPARAM)&buffer) == CB_ERR)
                         {
                             float number = 0;
+                            int item_count = SendMessage(hTabWnd, CB_GETCOUNT, 0, 0);
 
                             if(!number_from_string(buffer, &number, TRUE))
                             {
                                 MessageBoxWithResStringW(hWnd, MAKEINTRESOURCEW(STRING_INVALID_NUMBER),
                                              wszAppTitle, MB_OK | MB_ICONINFORMATION);
-                            } else
-                            {
+                            } else if (item_count >= MAX_TAB_STOPS) {
+                                MessageBoxWithResStringW(hWnd, MAKEINTRESOURCEW(STRING_MAX_TAB_STOPS),
+                                             wszAppTitle, MB_OK | MB_ICONINFORMATION);
+                            } else {
                                 SendMessageW(hTabWnd, CB_ADDSTRING, 0, (LPARAM)&buffer);
                                 SetWindowTextW(hTabWnd, 0);
                             }

programs/wordpad/wordpad.h

@@ -200,6 +200,7 @@
 #define STRING_OPEN_FAILED 1709
 #define STRING_OPEN_ACCESS_DENIED 1710
 #define STRING_PRINTING_NOT_IMPLEMENTED 1711
+#define STRING_MAX_TAB_STOPS 1712
 
 LPWSTR file_basename(LPWSTR);