Question

I apply opacity 0.75 for the Grid and all children which has Grid also take the opacity.

Is it possible to exclude child Controls and don’t apply opacity for them?

Thank you!

XAML

<Grid  x:Name="RootGrid" Opacity="0.75" Visibility="Visible" ClipToBounds="False"
       VerticalAlignment="Stretch" HorizontalAlignment="Stretch" >
    <local:MarqueeVer x:Name="marquee1" Duration="30" ClipToBounds="True"
                      RenderTransformOrigin="0.5,0.5" Margin="0,0,0,0"
                      VerticalAlignment="Stretch" HorizontalAlignment="Stretch"
                      Background="Transparent" Opacity="1">
        <StackPanel Name="lstItems" FlowDirection="LeftToRight" Orientation="Vertical"
                    VirtualizingStackPanel.IsVirtualizing="True"
                    VirtualizingStackPanel.VirtualizationMode="Recycling">
        </StackPanel>
    </local:MarqueeVer>
</Grid>

UPDATE:

I found some solution here but is any simpler solution?

You just have to calculate the right alpha channel for each color.

Answer 1

If you only want to change the opacity of the grid’s background, then you need to set the opacity=0.75 only in the background image.

But what I Apply some Brush to the Grid? WHat I can do in thhat case?

In the that case set the opacity in the brush