[lazarus] TFileDialog - Filter.

[Bob Wingard]

Mattias,
    Greetings. This will fix the problem with the filter not working 
properly in the TFileOpen dialog.

diff against gtkobject.inc
4649c4649
<     CurDescEnd:=CurDescStart;
---
 >     CurDescEnd:=CurDescStart + 1;  
4652c4652
<     CurDesc:=copy(Filter,CurDescStart,CurDescEnd-CurDescStart);
---
 >     CurDesc:=copy(Filter,CurDescStart + 1,CurDescEnd-(CurDescStart + 1));
4663c4663
<     CurDescStart:=CurMultiMaskEnd+1;
---
 >     CurDescStart:=CurMultiMaskEnd;

The filter and the filter description were not being properly parsed.

I am not sure if the behavior of the file open dialog is standard for a 
gtk widget. The filter is applied to both the directory list and the 
file list. Is this normal? The filter is not applied when the current 
directory changes, but is applied if the filter is re-selected from the 
drop down list. This is good for now as the only way to see directories 
with the filter applied is to change the directory.

Bob Wingard
Orange, Texas  USA