[PyQt] Where to start

Brickle Macho bricklemacho at gmail.com
Fri Jun 3 02:33:01 BST 2011

Hi David,

Thanks that helps a lot, really appreciate it.


On 3/06/11 8:06 AM, David Boddie wrote:
> On Thu Jun 2 23:07:12 BST 2011, Brickle Macho wrote:
>> I am trying to do is display an image, and then using drag-selection to
>> select a sub-image for later processing.   Eventually I want to be able
>> to select multiple regions and tag each region for appropruate back end
>> processing, but for now just being able to select one sub-image would be
>> good.      I can display an image, but don't know how to implement
>> drag-selection (think it is also know as rubber band selection).  I am
>> assuming I will need to write some mouse-callbacks or something.  My
>> search-fu has failed me and I haven't been able to find any examples to
>> study.    Can someone give me any pointers to which widgets I should be
>> using and perhaps where to find a sample program I can study.
> There didn't seem to be much in the PyQt examples to show this - the
> itemviews/chart example does use QRubberBand to allow the user to select
> data, but that's not the best example to learn this technique from.
> I quickly wrote an example that does part of what you want:
> http://www.diotavelli.net/PyQtWiki/Selecting_a_region_of_a_widget
> Hope this helps,
> David
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