Hi rajaka,

The following style should do the trick:

<Style TargetType="{x:Type igDock:SplitPaneSplitter}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type igDock:SplitPaneSplitter}">
                <Border Background="{TemplateBinding Background}"
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{TemplateBinding BorderThickness}"/>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
    <Style.Triggers>
        <Trigger Property="Orientation" Value="Vertical">
            <Setter Property="MinWidth" Value="4" />
            <Setter Property="Cursor" Value="SizeWE" />
        </Trigger>

        <Trigger Property="Orientation" Value="Horizontal">
            <Setter Property="MinHeight" Value="4" />
            <Setter Property="Cursor" Value="SizeNS"/>
        </Trigger>
    </Style.Triggers>
</Style>

The triggers in the above style control which cursor to use when the splitter is either vertical or horizontal.