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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glcanvasbox2.lua
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