[Gambas-user] Drag and Drop - howto

[Benoît Minisini]

Le 18/04/2018 à 11:51, Rolf-Werner Eilert a écrit :
> Last year I started a project which could benefit from dragging elements 
> from one GridView to another with the mouse.
> 
> As I was still developing the deeper code, I didn't take the time to 
> dive in this, and this year I would like to complete it. Just had a look 
> at the old code parts, and still do not grasp how these Drag, MouseDrag 
> etc. are meant to work together.
> 
> Public Sub GridView1_MouseDrag()
> 
>     TextBox1.Text = GridView1.Row & "::" & GridView1.Column
> 
> End
> 
> This starts as expected, but then keeps going - even beyond the borders 
> of GridView1. This makes it somewhat combersome if you need a start 
> value to be handed over to the drop point. I only see a chance when 
> setting a flag at its first call and saving the value(s) only once.
> 
> Public Sub GridView1_Drop()
> 
>    TextBox1.Text = "Stop"
> 
> End
> 
> This one is never raised, neither when the mouse button is depressed 
> whithin nor when without GridView1.
> 
> Why are there events called Mouse-something and NOT Mouse-something?
> 
> Maybe someone here can shed a light on this for me.
> 
> Regards
> Rolf
> 

Have you read the page about "Drag & Drop" on the wiki?

-- 
Benoît Minisini