From: Lyle Johnson <lyle@...>
Date: 2002-04-17T12:44:33+09:00
Subject: Re: Floating icons over FXCanvas area

> I am trying to draw a floating icon over a FXCanvas area using the
> SEL_MOTION, but I don't know how to manage the deletion of the
> previously drawn icon.

Can't you just paint over the previous rectangle occupied by the icon (after
setting the paint color to the canvas background color)? Something like:

    def onMotion(sender, sel, event)
        theCanvas = sender
        dc = FXDCWindow.new(theCanvas, event)
        # Paint over the old one
        dc.foreground = theCanvas.backColor
        dc.fillRectangle(oldX, oldY, theIcon.width, theIcon.height)
        # Draw icon in its new position
        dc.drawIcon(theIcon, event.rect.x, event.rect.y)
        oldX, oldY = event.rect.x, event.rect.y
        dc.end
    end

Hope this helps,

Lyle