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How to get the ID of a window according to some particular condition?

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julianLiuRsch

julianLiuRsch

Programmer
Oct 4, 2008
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Hello,

I know that in X window programming, if I know the ID of a particular window, I can manage it. For example, I can resize that window by using
---
XResizeWindow(display, win, 200, 300);
===

So my question is, how to get the window ID?

Particularly, when I know the PID of a program, how can I get the X window ID of the window in which it is running?

thanks in adv!
 
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