Dear Maurizio,
The selectstate of a control tells whether the control accepts (Able) or does not accept (Unable) keyboard/mouse input. In your example, its initial selectstate is Able. To change the selectstate, use
the functions enableControl and disableControl. For instance, add the following control to your dialog:
{ newLS = True
, newDef = ButtonControl "Enable/Disable" [ControlFunction (toggle
id1)]
}
and include its callback function:
toggle id1 (able,pst)
= (not able,appPIO (if able disableControl enableControl id1) pst)
This creates a button control with a local boolean state (initially True),
that, when clicked, toggles the current selectstate of the custom control.
Object I/O has no support for telling a control whether or not the mouse is
entering or leaving a control. I am not sure if that is what you're after.
Regards,
Peter
On 5/17/2011 11:14 AM, Ferreira Maurizio wrote:
How can I select/unselect a custom control ?
It seems to me there are no functions to set/unset the select state of a custom
control,
neither it changes state as you click on it or on another control in the same
dialog.
In the following example I would like to change from selected state (Red) to
Unselected (Green).
Any suggestion ?
Regards
Maurizio
module hello
import StdEnv, StdIO
Start world
#(ids,world) = openIds 2 world
= startIO NDI "ps" (snd o openDialog 1 (hello ids) ) [ProcessClose
closeProcess] world
where
hello [id1,id2] = Dialog "Hello dialog"
(CustomControl {w=50,h=30} showcustom [ ControlPos (Left, zero)
, ControlId id1
, ControlSelectState Able
, ControlFunction myfun
]
:+:
EditControl "" (PixelWidth 100) 1 [ControlPos (Left, zero),
ControlId id2]
)
[ WindowClose (noLS closeProcess)
, WindowViewSize {w=150, h=80}
, WindowPos (Fix, OffsetVector {vx=400, vy=350})
]
myfun st = st
showcustom Able {newFrame} picture
# picture = setPenColour Red picture
= fill newFrame picture
showcustom Unable {newFrame} picture
# picture = setPenColour Green picture
= fill newFrame picture
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