[Lazarus] Range-check error in TCarbonListColumn.SetHeaderWidth

[Joost van der Sluis]

Hi all,

Each time I start Lazarus on OS/X-Carbon, I get a range-check error.

This because TCarbonDataBrowser.AutoSizeColumns calculates a negative 
width. It calculates ((cRect.right-cRect.left)-sWidth) div aCnt. I think 
that sWidth is the sum of the width of all columns which are not 
auto-sized, and aCnt is the number of columns that are autosized. The 
problem arises if the sWidth is larger then the width of the rect.

I can think of several ways to fix this. But what is .AutoSizeColumns 
supposed to do in this case?

Regards,

Joost