Re: X Window programming query

[Arun Sharma <arun@xxxxxxxxxxxxxxx>]

On Mon, Feb 05, 2001 at 12:40:04PM -0000, Karthika  Sivaramakrishnan wrote:
> Hello! 
> I am developing a monitoring project in X Window. For a particular window whose ID I have obtained, I would like to know 

Programming for X using Xt is painful. If you still want to do it, look
at:

XtAppMainLoop()
XtNextEvent()

However, if you decide to use a widget toolkit like Qt/KDE, things are
a lot more easy.

> 
> 1. When that window was opened (created). Can I find this by looking out for some specific event? How can I conclude that the window was opened as the result of some command (or click on an icon)?
> 

Look at a QApplication and QMainWindow man pages or their KDE equivalents,
which are basically sub classes of the above classes.

> 2. How can I associate a window to the program that runs it? For example, for the caption "Media Player", the corresponding program is "kmidi". Will these details be available in some system file?
> 

This can be configured from the KDE control panel. You basically associate
a "file extension" with an application. In the above case, you'd go by
".mid" extension. In some cases where the file comes over HTTP, you could
use the content-type header. KDE has some built in support for doing this.
(So should Gnome - but I'm no expert).

	-Arun