Re: [Xbae-discuss] xbaeAdjustTopRow

[Danny B. <dan...@sk...>]

Joe,

Thanks for reporting this.

There are several parts to the answer.

We've changed a lot since 4.9.5, and the top_row field is
part of what's changed.

Therefore, could you test whether this also happens with 4.9.13 ?

If it does, could you provide us with a stack trace and possibly
information that we can use to reproduce ?

Thanks,

	Danny

> "Potts, Joe" wrote:
> 
> Hello, my name is Joe Potts and I work at Lockheed Martin's Air Traffic
> Management Division.  While using the Matrix (version 4.9.5), we are receiving
> a divide by zero exception in the first line of the routine xbaeAdjustTopRow.
> The first line is:
> 
> int rows_visible = VISIBLE_HEIGHT(mw) / SOME_ROW_HEIGHT(mw,
> mw->matrix.top_row);
> 
> Drilling down the SOME_ROW_HEIGHT macro leaves you with this statement:
> 
> mw->matrix.row_heights[mw->matrix.top_row]
> 
> The problem occurs because mw->matrix.top_row evaluates to -1, and the entire
> denominator evaluates to 0.  Uh-oh...
> 
> My question is what the value of -1 for the top_row variable means?  Is it a
> default for something?  I do not see it as something we are setting
> explicitly.  What are the circumstances of the top_row variable being set to
> -1?

-- 
Danny Backx (da...@gn... dan...@sk...)
Home page :	http://users.skynet.be/danny.backx
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