Hi Antonio,
Any suggestions why defining the action call back is causing an
error?
Milind
On Tue, Jul 25, 2017 at 8:42 AM, Milind Gupta <[email protected]>
wrote:
> Hi Antonio,
> Please see the attached example. When I run this I get this
> error:
>
> lua: [string "iuplua.lua"]:139: bad argument #3 to 'SetCallback' (Invalid
> functi
> on when set callback.)
> stack traceback:
> [C]: in function 'iuplua.SetCallback'
> [string "iuplua.lua"]:139: in metamethod '__newindex'
> glcanvasbox2.lua:13: in main chunk
> [C]: in ?
>
>
> Please can you help me fix it.
>
> Thanks,
> Milind
>
>
> On Tue, Jul 25, 2017 at 6:56 AM, Antonio Scuri <[email protected]>
> wrote:
>
>> The IupGLCanvasBox was designed to be a background drawing while the
>> controls are drawn on the foreground. So I think that one possible approach
>> is to use this glsubcanvas with zorder=top.
>>
>> In the error it seems that you are trying to set a non function as a
>> callback. You should check that.
>>
>> Best,
>> Scuri
>>
>> Em 24/07/2017 19:31, "Milind Gupta" <[email protected]> escreveu:
>>
>> I tried placing a glsubcanvas over the whole canvas box and tried to do
>> all the drawing in the action callback of the subcanvas but I get this
>> error then:
>>
>> [string "iuplua.lua"]:139: bad argument #3 to 'SetCallback' (Invalid
>> function when set callback.)
>> stack traceback:
>> [C]: in function 'iuplua.SetCallback'
>> [string "iuplua.lua"]:139: in metamethod '__newindex'
>>
>> In my program it points to the link where the action callback function
>> starts.
>>
>> On Mon, Jul 24, 2017 at 3:16 PM, Milind Gupta <[email protected]>
>> wrote:
>>
>>> Hi,
>>> I notice that if I draw anything on the glcanvasbox it is always
>>> behind the glcontrols like gllabel, etc. Is there a way for me to draw and
>>> be on top of those controls?
>>>
>>> Thanks,
>>> Milind
>>>
>>
>>
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