Yes, sorry. Just copy&paste from iuplua.c
Best,
Scuri
On Sat, Jul 11, 2015 at 11:45 AM, Milind Gupta <milind.gu...@gmail.com>
wrote:
> I just had to change iup_handle in lua_getmetatable to "iupHandle" to work
> in my code.
>
> On Sat, Jul 11, 2015 at 7:31 AM, Milind Gupta <milind.gu...@gmail.com>
> wrote:
>
>> Looks good.
>>
>> Thanks,
>> Milind
>>
>> On Sat, Jul 11, 2015 at 7:26 AM, Antonio Scuri <sc...@tecgraf.puc-rio.br>
>> wrote:
>>
>>> How about:
>>>
>>> int iuplua_isihandle(lua_State *L, int pos)
>>> {
>>> int ret = 0;
>>> if (lua_getmetatable(L, pos)) /* t2 = metatable(stack(pos)) */
>>> {
>>> lua_pushstring(L, iup_handle);
>>> lua_gettable(L, LUA_REGISTRYINDEX); /* t = registry["iupHandle"] */
>>>
>>> if (lua_rawequal(L, -2, -1)) /* check (t2==t)? */
>>> ret = 1;
>>>
>>> lua_pop(L, 2); // Pop registry["iuphandle"] and the metatable
>>> }
>>>
>>> return ret;
>>> }
>>>
>>> Best,
>>> Scuri
>>>
>>>
>>> On Sat, Jul 11, 2015 at 2:44 AM, Milind Gupta <milind.gu...@gmail.com>
>>> wrote:
>>>
>>>> It works good. I modified it a little to balance the stack:
>>>>
>>>> int iuplua_isihandle(lua_State *L, int pos)
>>>> {
>>>> int x = lua_getmetatable(L, pos); /* t2 = metatable(stack(pos)) */
>>>> lua_pushstring(L, "iupHandle");
>>>> lua_gettable(L, LUA_REGISTRYINDEX); /* t = registry["iupHandle"] */
>>>> if (lua_rawequal(L, -2, -1)) /* check (t2==t)? */
>>>> {
>>>> lua_pop(L, 2);
>>>> return 1;
>>>> }
>>>> else
>>>> {
>>>> if (x)
>>>> lua_pop(L,2); // Pop registry["iuphandle"] and the
>>>> metatable
>>>> else
>>>> lua_pop(L,1); // Pop registry["iuphandle"]
>>>> return 0;
>>>> }
>>>> }
>>>>
>>>>
>>>> On Fri, Jul 10, 2015 at 4:50 PM, Milind Gupta <milind.gu...@gmail.com>
>>>> wrote:
>>>>
>>>>> Thanks,
>>>>> I will try it out tonight.
>>>>>
>>>>> Milind
>>>>>
>>>>>
>>>>> On Fri, Jul 10, 2015 at 11:41 AM, Antonio Scuri <
>>>>> sc...@tecgraf.puc-rio.br> wrote:
>>>>>
>>>>>> Try this:
>>>>>>
>>>>>> int iuplua_isihandle(lua_State *L, int pos)
>>>>>> {
>>>>>> lua_getmetatable(L, pos); /* t2 = metatable(stack(pos)) */
>>>>>> lua_pushstring(L, "iupHandle");
>>>>>> lua_gettable(L, LUA_REGISTRYINDEX); /* t = registry["iupHandle"] */
>>>>>> if (lua_rawequal(L, -2, -1)) /* check (t2==t)? */
>>>>>> {
>>>>>> lua_pop(L, 2);
>>>>>> return 1;
>>>>>> }
>>>>>> else
>>>>>> return 0;
>>>>>> }
>>>>>>
>>>>>> Just commit to the SVN.
>>>>>>
>>>>>> Best,
>>>>>> Scuri
>>>>>>
>>>>>>
>>>>>> On Fri, Jul 10, 2015 at 12:57 PM, Milind Gupta <
>>>>>> milind.gu...@gmail.com> wrote:
>>>>>>
>>>>>>> Hi,
>>>>>>> I wanted to pass a ihandle to C but I don't want it to
>>>>>>> throw an error if it is not a ihandle but return nil and a error
>>>>>>> message.
>>>>>>> How can I do that? Do I have to use the lua_touserdata function? How
>>>>>>> can I
>>>>>>> then check whether I have received a ihandle without throwing an error?
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Milind
>>>>>>>
>>>>>>>
>>>>>>>
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>>>>>>
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>>>>>
>>>>
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>>>
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>>
>
>
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