Bug? Canvas.DrawLine with Transparent color ?

[klaus]

Hi Erel,
In B5J Canvas.DrawLine with Transparent color doesn't behave the same as in B4A.
In B4A on a transparent Panel, drawing a line with a color and then drawing the same line with a transparent color removes the line.
In B4J it does nothing, it draws a transparent black color onto the canvas, but doesn't set the canvases pixels to transparent.

Attached a small test project, I would expect the lines be erased when moving the mouse.

 

[Erel]

This is how the JavaFX engine works. The only way to clear is with ClearRect. You can combine it with ClipPath to clear different shapes.

 

[klaus]

The only way to clear is with ClearRect.

That's what I already did as a workaround.