Re: Scribble Example

[zentara <zentara1 sbcglobal net>]

On Mon, 04 Aug 2008 00:42:40 +0200
Mario Kemper <mario kemper googlemail com> wrote:

> I am still working on this issue and it seems to me that a
> "pointer_grab" is definitely the easiest way to get motion and button
> events even if your cursor is outside of your own toplevel window.
>
> I've a little demo of "pointer-grabbing" attached. When you grab the
> pointer and hold down the mouse button afterwards all events are
> recognized in the main app until you release the button.
>
> The events are recognized well and pointer grabbing is doing a good job,
> but am trying do draw a rectangle to the root window while moving the
> mouse as described above (like selecting multiple files on the nautilus
> desktop for example) and this is not working. 
>
> Maybe someone has a clue why the rectangle is not drawn (line 121 in
> screeny.pl)?
> Cheers,
> Mario

I got your script to draw by process of elimination ( guessing) :-)

I chopped down your model to the point where it would draw a simple
rectangle, without the mouse drag. Then I added a line at a time back in,
until it stopped working.

The culprit is:

$gc->set_function ('xor');

Comment that line out, and your script works. 

Thanks for the cool code,
zentara


-- 
I'm not really a human, but I play one on earth.
http://zentara.net/Remember_How_Lucky_You_Are.html