O$ creating a drag rectangle on the thick client

[Paul Mulroney]

Hi Everyone,

I got this working! I now have a selection box with handles that can be resized.  It was pretty easy to implement using Bas' idea of a foreground shape object. The tricky part is that we use the screen scaling feature, and when you do that your coordinates get a bit wacky. 

Thanks for the input everyone - you guys rock!

Regards,
Paul.



> On 22 Jun 2020, at 2:40 pm, Bastiaan Olij <bastiaan.olij at jobbag.com> wrote:
> 
> Hey Paul,
> 
> It's been a long time since I played with this type of thing but if I'm not mistaken you can set the property $selected on any window field and it will enable the handles that allow you to move and resize the field, even in runtime.
> 
> So for a rectangle you could simply using a kBobj shape field, turn $selected to true and it can be moved around the window.
> ________________________________
> From: omnisdev-en <omnisdev-en-bounces at lists.omnis-dev.com> on behalf of Paul Mulroney <pmulroney at logicaldevelopments.com.au>
> Sent: Monday, 22 June 2020 12:56 PM
> To: Omnis-dev list <omnisdev-en at lists.omnis-dev.com>
> Subject: O$ creating a drag rectangle on the thick client
> 
> Hi Everyone,
> 
> I'm working on a feature where I want the user to be able to draw a rectangle onto an image on a window in the runtime.  At the moment it's pretty basic - I can track the mouse down and mouse up events, and then it draws the box.  However, it would be really cool if the user saw a rectangle as they moved the mouse after clicking mouse down - like drawing a box in a drawing program.  For double bonus points it'd be awesome if they could later on select the rectangle and resize it.
> 
> I don't think there's any functionality in Omnis that allows us to do that in the runtime.  Has anyone done something like this in the past, and are willing to share?
> 
> Regards,
> Paul.


Failure is not an option. It comes bundled with your Microsoft product.
(Geeky One Line Jokes http://bit.ly/XU8lFD)
-- 
Paul W. Mulroney                                            We Don't Do Simple Pty Ltd 
pmulroney at logicaldevelopments.com.au       Trading as Logical Developments
www.logicaldevelopments.com.au                   ACN 161 009 374 
Ph: +61 8 9458 3889                                       86 Coolgardie Street
                                                                         BENTLEY  WA  6102