Re: Moving a Container

John Marshall wrote:
> I have an on-screen keyboard in a container and want to give the user the
ability to relocate it anywhere on screen.  Can someone get me started on how to
let the user drag a container around?

1) Set the form's allowDrop property to true
2) Set the container object's dragEffect property to 2 (Move).
3) Set the container object's onLeftMouseDown event handler to:
           this.drag(this.name,"O","")

See example below ...

Ken

// DragContainer.wfm
** END HEADER -- do not remove this line
//
// Generated on 03/18/2008
//
parameter bModal
local f
f = new DragContainerForm()
if (bModal)
    f.mdi = false // ensure not MDI
    f.readModal()
else
    f.open()
endif

class DragContainerForm of FORM
    with (this)
       height = 16.0
       left = 65.8571
       top = 11.0909
       width = 40.0
       text = ""
       allowDrop = true
    endwith

    this.CONTAINER1 = new CONTAINER(this)
    with (this.CONTAINER1)
       onLeftMouseDown = class::CONTAINER1_ONLEFTMOUSEDOWN
       left = 18.2857
       top = 2.8182
       width = 20.0
       height = 10.0
       dragEffect = 2	// Move
    endwith

    this.CONTAINER1.TEXT1 = new TEXT(this.CONTAINER1)
    with (this.CONTAINER1.TEXT1)
       height = 2.2727
       left = 0.8571
       top = 1.0
       width = 12.0
       text = "Click and drag the container ... "
       pageno = 0
    endwith


    function CONTAINER1_onLeftMouseDown(flags, col, row)
        // start the drag ...
        this.drag(this.name,"O","")
    return

endclass


-- 
/(Opinions expressed are purely my own, not those of dataBased
Intelligence, Inc.)/

*Ken Mayer* [dBVIPS]
/Golden Stag Productions/
dBASE at goldenstag dot net
http://www.goldenstag.net/GSP
http://www.goldenstag.net/dbase/dBASEBooks.htm

John Marshall wrote:
> 
> Thanks Ken, I almost had it except for those darn parameters.
> 
> I have one follow up question ... I am using an ELO touchscreen monitor and
the mouse emulation is a little different.  To drag and drop (move) with a mouse
one holds down the left button until ready to drop.  With the touch screen, I
almost need to tap the container to select, and then tap the area I want it to
drop near.  Either that or a touch once, and follow the "mouse"
pointer until a second "drop" touch.
> 
> Any ideas?

Sorry, but no. I am not sure how to do something like that with a 
touch-screen.

Ken

-- 
/(Opinions expressed are purely my own, not those of dataBased
Intelligence, Inc.)/

*Ken Mayer* [dBVIPS]
/Golden Stag Productions/
dBASE at goldenstag dot net
http://www.goldenstag.net/GSP
http://www.goldenstag.net/dbase/dBASEBooks.htm

John Marshall wrote:
> Is there a way to use the left down and left up events to pick up and drop
the object?  If so, I could touch and hold, and on releasing drop the item?

Um, take a look at onDrop, and see if perhaps you can work with that?

Ken

-- 
/(Opinions expressed are purely my own, not those of dataBased
Intelligence, Inc.)/

*Ken Mayer* [dBVIPS]
/Golden Stag Productions/
dBASE at goldenstag dot net
http://www.goldenstag.net/GSP
http://www.goldenstag.net/dbase/dBASEBooks.htm

John Marshall wrote:
> Got it Ken!  Went through all of the settings until I found the right
emulation.  Pretty neat stuff possible with this thing for user interaction.

Cool beans. Glad you found a combination that will work. I don't use 
drag and drop much for my apps, no real need. But ...

Ken

-- 
/(Opinions expressed are purely my own, not those of dataBased
Intelligence, Inc.)/

*Ken Mayer* [dBVIPS]
/Golden Stag Productions/
dBASE at goldenstag dot net
http://www.goldenstag.net/GSP
http://www.goldenstag.net/dbase/dBASEBooks.htm

I have an on-screen keyboard in a container and want to give the user the
ability to relocate it anywhere on screen.  Can someone get me started on how to
let the user drag a container around?