On 7/29/2011 1:12 PM, Phil Thompson wrote:
On Mon, 18 Jul 2011 12:06:05 -0400, Nathan Weston<nat...@genarts.com>
wrote:
I'm trying to save the custom colors of QColorDialog using QSettings. On
Windows this is working correctly, but on Mac I'm having some problems:
1. QColorDialog.customColor() returns a long instead of an int
2. When I save that long using QSettings, it comes back as an int with a
value of -1
This seems like a bug in Qt or PyQt to me. Am I missing something?
It's the usual problem with QSettings not being able to restore the value
exactly because it doesn't retain sufficient type information. In this case
the fact that the value is unsigned and not signed (the bit pattern is the
same).
You should always use the 'type' keyword argument to QSettings.value() to
explicitly state what you are expecting back. As Python doesn't have an
unsigned type you have to specify a C++ type...
settings.value('color', type='uint')
...should work.
What if I'm retrieving a list of unsigned ints? What's the correct type
signature?
I'm using the v2 QVariant API so I just collected all the custom colors
into a python list and saved that.
--
. . . . . . . . . . . . . . . . . . . . . . . . .
Nathan Weston nat...@genarts.com
GenArts, Inc. Tel: 617-492-2888
955 Mass. Ave Fax: 617-492-2852
Cambridge, MA 02139 USA www.genarts.com
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