B4J Question Smooth dragging

[ThRuST]

In what sub do you usually store the mouse x,y position to init dragging of an object to allow smooth calculated dragging of objects? (in this case an image)

since this is not triggered when dragging begins. Is there a MouseDraggedBegins event or how you solve that?

public Sub xIcon_MouseClicked (EventData As MouseEvent)
   
    'fx.Msgbox(Main.MainForm, "Clicked!!", "")
    StoreClickPosX = currentMouseX
    StoreClickPosY = currentMouseY
   
    Log("Position stored")
   
End Sub

 

[Cableguy]

In the EventData you will find all you need!
the mouse event will tell you if is is a down, a move or an up event, along with the screen coordinates.

 

[ThRuST]

@Cableguy I was assuming that the initial storage of the x,ypostion should be done in one of the below events, but perhaps another event should be used.

_MouseClicked (EventData As MouseEvent)

_MousePressed (EventData As MouseEvent)

_MouseDragged (EventData As MouseEvent)

 

[ThRuST]

-Storing x and y is used to avoid the glitch and "jump" of the object at the beginning of dragging that is. This is usually done is the MouseClick event in C sharp, but my old method didn't work in B4J. Thereby my question.

 

[ThRuST]

I guess this webpage explains exactly what I am trying to achieve. >Here<'s where the party's at

 

[ThRuST]

 

[ThRuST]

@Cableguy Thanks. Mission completed. Coruscant was saved. Heading back to base :-D

 

[ThRuST]

...but not quite yet Here's the JavaFX way, and that's the way we need to use.

 

[Alexander Stolte]

Smooth dragging:

Private Sub xpnl_test_Touch(Action As Int, X As Float, Y As Float) As Boolean
       If Action = xpnl_test.TOUCH_ACTION_DOWN Then
   
            donwx  = X
            downy  = y
   
        Else if Action = xpnl_test.TOUCH_ACTION_MOVE Then
   
            xpnl_test.Top = xpnl_test.Top + y - downy
            xpnl_test.Left = xpnl_test.Left + x - donwx
   
        End If
  
    Return True
End Sub

I use this code in my AS MsgBox Class.

 

[ThRuST]

@Alexander Stolte Wow nice. I see it also works with B4J I link to your library here

[B4X] [XUI] AS MsgBox/Dialog