[Gambas-user] Can not draw outside of draw enent handler

[Demosthenes Koptsis]

On Sun, 2011-03-27 at 17:00 +0200, Benoît Minisini wrote:
> > 
> > i try to make a similar example from this page
> > http://gambasdoc.org/help/comp/gb.qt4/draw/line?v3
> > 
> > in this page it says
> > 
> > Draw.Begin(ME) where ME is a form.
> > 
> > i get this error in my project for
> > 
> > Draw.Begin(drawArea) where drawArea is the name of a DrawingArea object.
> > 
> > Where is the bug? The name "drawArea" ?
> > 
> 
> Now, in Gambas 3, you just cannot draw outside of the Draw event handler 
> anymore. That's all. Consequently, you cannot draw on a form too, as a form 
> has no Draw event handler.
> 
> Regards,
> 

1) The previous page has the next example:


' This example will draw a red line on the form. To try out this
example,
' start a new graphics project and place a Button on the Form.

PUBLIC SUB Button1_Click()
Draw.Begin(ME)
Draw.LineWidth = 20
Draw.ForeColor = Color.Red
Draw.Line(50, 100, 200, 150)
Draw.End
END


And as i understand does not work, so the page is outdated?


2) ok, i try to change the code.

Old method
-----------------------------
Public Sub btnLine_Click()

 Draw.Begin(drawArea)
 
 SetValues()
 
 Draw.Line(55, 47, 289, 367)
 
 Draw.End

End
-----------------------------





New method i try...

-----------------------------
Public iAct As Integer


Public Sub btnLine_Click()

iAct = 1
drawArea_Draw()

End

Public Sub drawArea_Draw()

Select Case iAct
  Case 1 'draw line
    Draw.Begin(drawArea)

    SetValues()

    Draw.Line(55, 47, 289, 367)

    Draw.End

  Case 2
    
End Select

End
-----------------------------

it continues to refuses.
"Cannot draw outside of draw event handler"
now it is in draw event.

What is happening?

i attach again the project


Thanks for any help!


-- 
Regards,
Demosthenes Koptsis.
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