I use KDE 4.6.3 on Kubuntu Natty.
I need to activate some KDE window via console command. Good tool for this is qdbus. It works normally with other actions, but I can't find the way to set focus. Command:

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qdbus org.kde.kontact  /kontact/MainWindow_1 com.trolltech.Qt.QWidget.setFocus

does nothing.
Also I try with other apps and see nothing result too:

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qdbus org.kde.kate-24423 /kate/__KateMainWindow_1 com.trolltech.Qt.QWidget.setFocus

But other actions works normally:

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com.trolltech.Qt.QWidget.setWindowTitle
com.trolltech.Qt.QWidget.showMaximized
com.trolltech.Qt.QWidget.showMinimized
com.trolltech.Qt.QWidget.showNormal
com.trolltech.Qt.QWidget.showFullScreen
com.trolltech.Qt.QWidget.hide
com.trolltech.Qt.QWidget.show

Those commands do the actions, but don't activate (set focus) to window.

Also I try this with SUSE linux and got the same problem with setFocus.

What I do wrong and how I can set focus to window via dbus or other tool?

Use "wmctrl" to manage windows in X11, and forget D-Bus.

Many thank's! I don't know about this tool before... All works good!

Although not directly related, I moved the topic to KWin since it deals with window management. I also marked the topic as solved as described here.