Tooltip is not visible on the disabled checkbox wpf

Question

Tooltip is not visible on disabled checkbox even after setting ToolTipService.ShowOnDisabled="True".

<CheckBox Grid.Column="0" HorizontalAlignment="Center" Visibility="{Binding Converter={StaticResource TaskCompletionVisbilityConverter},ConverterParameter='chkbox'}" 
                             Height="16" Width="16" Foreground="{Binding Converter={StaticResource TaskColorConverter}}"
                               ToolTipService.ShowOnDisabled="True" ToolTipService.IsEnabled="True"
                              ToolTip="Check To complete Task"
                               IsEnabled="{Binding State, Converter={StaticResource EnableDisableConverter},
                        ConverterParameter='checkbox',Mode=TwoWay}" Margin="37,5,0,0">

Answer 1

Your code works for me. ToolTipService.ShowOnDisabled="True" should be what you need.

Please check that you haven't set IsHitTestVisible to false in any Style/ControlTemplate associated with the checkbox.

Setting IsHitTestVisible to false means that it will ignore any mouse events associated with the control and so you won't get the tooltip.

Answer 2

ToolTipService.ShowOnDisabled="True" was not working for me. Below works :

<DataGridCheckBoxColumn.CellStyle>
    <Style>                                     
        <Setter Property="ToolTipService.ShowOnDisabled" Value="True" />
    </Style>                                 
</DataGridCheckBoxColumn.CellStyle>