[Samsung Galaxy W I8150] Adi_aishiteru:
here is the beginning : [MOD CM9 & CM10] add power button to status bar

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GUIDE HOW TO ADD POWER BUTTON TO STATUS BAR FOR CM9

for CM9 also included Recent apps button

SystemUI/res/layout/status_bar_expanded.xml

code :

<RelativeLayout android:paddingTop="3.0dip" android:paddingRight="3.0dip" android:paddingBottom="5.0dip" android:layout_width="fill_parent" android:layout_height="52.0dip">
<com.android.systemui.statusbar.policy.DateView android:textAppearance="@style/TextAppearance.StatusBar.Date" android:gravity="left|center" android:id="@id/date" android:paddingLeft="16.0dip" android:layout_width="wrap_content" android:layout_height="fill_parent" android:singleLine="true" android:layout_alignParentLeft="true" />
<ImageView android:id="@id/settings_button" android:paddingLeft="8.0dip" android:paddingRight="8.0dip" android:layout_width="wrap_content" android:layout_height="fill_parent" android:src="@drawable/ic_notify_quicksettings" android:layout_toRightOf="@id/date" android:contentDescription="@string/accessibility_settings_button" />
<ImageView android:id="@id/clear_all_button" android:paddingLeft="8.0dip" android:paddingRight="8.0dip" android:layout_width="wrap_content" android:layout_height="fill_parent" android:src="@drawable/ic_notify_clear" android:layout_alignParentRight="true" android:contentDescription="@string/accessibility_clear_all" />
</RelativeLayout>

change to :

<RelativeLayout android:paddingTop="3.0dip" android:paddingRight="3.0dip" android:paddingBottom="5.0dip" android:layout_width="fill_parent" android:layout_height="52.0dip">
<com.android.systemui.statusbar.policy.DateView android:textAppearance="@style/TextAppearance.StatusBar.Date" android:gravity="left|center" android:id="@id/date" android:paddingLeft="16.0dip" android:layout_width="wrap_content" android:layout_height="fill_parent" android:singleLine="true" android:layout_alignParentLeft="true" />
<ImageView android:id="@id/settings_button" android:paddingLeft="8.0dip" android:paddingRight="8.0dip" android:layout_width="wrap_content" android:layout_height="fill_parent" android:src="@drawable/ic_notify_quicksettings" android:layout_toRightOf="@id/date" android:contentDescription="@string/accessibility_settings_button" />
[COLOR="Red"]<com.android.systemui.statusbar.policy.KeyButtonView android:id="@id/recent_apps" android:paddingLeft="4.0dip" android:paddingRight="4.0dip" android:layout_width="wrap_content" android:layout_height="fill_parent" android:src="@drawable/nyandroid10" android:layout_toRightOf="@id/settings_button" android:contentDescription="@string/accessibility_recent" systemui:keyCode="187" systemui:glowBackground="@drawable/ic_sysbar_highlight" />
<com.android.systemui.statusbar.policy.KeyButtonView android:id="@id/back" android:paddingLeft="4.0dip" android:paddingRight="4.0dip" android:layout_width="wrap_content" android:layout_height="fill_parent" android:src="@drawable/nyandroid11" android:layout_toRightOf="@id/recent_apps" android:contentDescription="@string/accessibility_back" systemui:keyCode="26" systemui:glowBackground="@drawable/ic_sysbar_highlight" />[/COLOR]
<ImageView android:id="@id/clear_all_button" android:paddingLeft="8.0dip" android:paddingRight="8.0dip" android:layout_width="wrap_content" android:layout_height="fill_parent" android:src="@drawable/ic_notify_clear" android:layout_alignParentRight="true" android:contentDescription="@string/accessibility_clear_all" />
</RelativeLayout>

and add resources to SystemUI/res/drawable-nodpi : http://www.mediafire.com/?e3yn2c73ryiiv56

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GUIDE HOW TO ADD POWER BUTTON TO STATUS BAR FOR CM10

SystemUI/res/layout/status_bar_expanded.xml

code :

<include android:layout_width="fill_parent" android:layout_height="@dimen/notification_panel_header_height" layout="@layout/status_bar_expanded_header" />
<com.android.systemui.statusbar.powerwidget.PowerWidget android:id="@id/exp_power_stat" android:layout_width="fill_parent" android:layout_height="@dimen/notification_panel_widget_height" />
<TextView android:textAppearance="@style/TextAppearance.StatusBar.Expanded.Network.EmergencyOnly" android:gravity="center" android:id="@id/emergency_calls_only" android:paddingBottom="4.0dip" android:visibility="gone" android:layout_width="fill_parent" android:layout_height="wrap_content" />
<ScrollView android:id="@id/scroll" android:fadingEdge="none" android:layout_width="fill_parent" android:layout_height="fill_parent" android:overScrollMode="always">

change to :

<include android:layout_width="fill_parent" android:layout_height="@dimen/notification_panel_header_height" layout="@layout/status_bar_expanded_header" />
<com.android.systemui.statusbar.powerwidget.PowerWidget android:id="@id/exp_power_stat" android:layout_width="fill_parent" android:layout_height="@dimen/notification_panel_widget_height" />
[COLOR="Red"]<com.android.systemui.statusbar.policy.KeyButtonView android:id="@id/back" android:paddingLeft="4.0dip" android:paddingRight="4.0dip" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/redbean0" android:layout_toRightOf="@id/exp_power_stat" android:contentDescription="@string/accessibility_back" systemui:keyCode="26" systemui:glowBackground="@drawable/ic_sysbar_highlight" />[/COLOR]
<TextView android:textAppearance="@style/TextAppearance.StatusBar.Expanded.Network.EmergencyOnly" android:gravity="center" android:id="@id/emergency_calls_only" android:paddingBottom="4.0dip" android:visibility="gone" android:layout_width="fill_parent" android:layout_height="wrap_content" />
<ScrollView android:id="@id/scroll" android:fadingEdge="none" android:layout_width="fill_parent" android:layout_height="fill_parent" android:overScrollMode="always">

and add resources to SystemUI/res/drawable-nodpi http://www.mediafire.com/?7b4gafn1xp4bv7t

Credit & Thanks to :]

Evilisto for sources

Arco for CM9 & CM10

Zalz on d'buzz & Evanlocked as my inspiration