CEGUI (Crazy Eddie's GUI) Forums

Posted: **Fri Jun 18, 2010 06:15**

Yesterday I was working on CEGUI lua script, I met this error when comparing two CEGUI windows:

"Attempt to perform operation on an invalid operand"

And my script is like this:

Code: Select all

function OnClicked(args)
    local guiWnd = CEGUI.toWindowEventArgs(args).window
    if guiWnd == oButtonOK then
        --TODO: Start scene
    elseif guiWnd == oButtonCancel then
        --TODO: end scene
    end

When guiWnd is actual equal to oButtonOK, the script works perfect
This error occurs only when guiWnd is different from oButtonOK, e.g. click the oButtonCancel.

I find CEGUI is using Tolua++1.0.92 and has some mod on it. And Tolua++1.0.93 seems to have solved this problem.
But since I am a beginner in Lua :oops:

, it is hard to update the Tolua version. So this conclusion is not tested.

Anyone can help?

Posted: **Mon Jun 21, 2010 08:53**

I don't have any info regarding this issue. If what you say is the case, it sounds like an issue with tolua++, so there's not much we can do about that except confirm the issue, confirm the fix, and apply it

I'll add a ticket so that this is not forgotten.

In the mean time, I think a workaround solution is perhaps to compare the window names rather than the window references directly.

HTH, and thanks for raising the issue.

CE.

Posted: **Mon Jun 21, 2010 10:13**

Thank you for your reply CE

Code: Select all

In the mean time, I think a workaround solution is perhaps to compare the window names rather than the window references directly.

Actually I'm using this method as solution. :rofl:

And I will try to update the tolua++ version if I have spare time.

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