[Lazarus] How to mimic MWSnap's "Window Information" feature on X11

[Funky Beast]

Graeme Geldenhuys wrote:
> Hi,
> 
> MWSnap is an excellent screenshot capture program for the Windows
> platform. It includes a few other nice features as well. One of them
> is a "Window Information" feature. Awesome feature to spy on other
> software to get an idea how how the created the GUI layout. :-)
> I would like to try and write a utility for X11 platform to do the
> same. Anybody got any ideas how to do it?
> 
> * In MWSnap when you select "Window Information" feature, it seems to
> take a snapshot of the desktop. I tested this by enabling the seconds
> in the date/time display. The seconds stop ticking as soon as I select
> "Window Information" feature.
> * As you move the mouse over the screen, it displays information about
> that window (handle, class, co-ordinates, dimensions etc).
> * *This* is the real feature I'm trying to duplicate. As you move the
> mouse, it draws a rectangle around the window area it's giving
> information about.
>   eg: The button in a ComboBox or a Button or Edit on a Form etc.. The
> following link shows what I'm trying to accomplish.
>   http://opensoft.homeip.net/~graemeg/mwsnap_screenshot.png
> 
> Has anybody written such a tool, or know of an existing tool that does
> this?  Anybody know how MWSnap manages to do the above and how I could
> do the same for X11?  I would guess Felipe's Magnifier application
> will give some hints on capturing the screen, but what about the other
> parts?
> 
> Regards,
>   - Graeme -
> 
> 
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Hi,

Try wininfo, its included in most distros.
To find out how they do it, you can get the source from:
http://www.freedesktop.org/Software/wininfo

HTH,
Funky Beast