Giulio Bernardi schreef:
Hi,
I think I found a bug that doesn't show up very frequently:
In lcl/widgetset/wsdialogs.pp, TWSCommonDialog class defines CreateHandle
method, which returns a THandle.
Now, wsdialogs doesn't use LCLType, so THandle is a 32 bit integer on 64
bits platform (apart from win64 IIRC)..
In gtk interface this could lead to problems:
TGtkWSCommonDialog.CreateHandle calls CreateHandle of the widgetset,
which returns a 64 bit thandle, and then returns this value as a 32 bit
thandle.
Even if I never noticed problems with opendialogs & friends with lazarus
(gtk) on x86_64 linux, this doesn't mean that
the code is right (maybe that I was lucky and I always had gtk objects
created under 4 gb limit, or maybe that sometimes I had
access violations but I didn't care about it).
I think that problems might actually arise only with gtk (and gtk2?) since
qt and win32 return 0 as common dialogs handles (I don't
know for fpgui, and carbon is 32 bits only IIRC).
So, if I am right, here is a patch that makes wsdialogs use LCLType. It
does
the same to all xxxwsdialogs of the various widgetsets.
Thanks. Applied.
The win32wsdialogs already had LCLType.
It didn't fix the select directory dialog in win64 though, I still get
TApplication.HandleException Privileged instruction
Stack trace:
$0000000078F2A966
Vincent
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