Question

When our application is viewed on two particular machines, one is Vista and one XP, we have the effect on some text boxes, when focused, the left and right borders are “soft“, and when you type past the right border, it disappears altogether, like this:

On all other machines that we tested it looks fine, however.

For all its worth, below is the style we have on the TextBox, although when I make a sample WPF application and apply this style to a TextBox, I don’t get the same problem on the two problem machines, so it seems some other combination of settings/styles in our application which causes this.

<Style TargetType="TextBox">
    <Setter Property="Margin" Value="0 0 0 0"/>
    <Setter Property="MaxHeight" Value="50"/>
    <Setter Property="VerticalAlignment" Value="Stretch"/>
    <Setter Property="VerticalContentAlignment" Value="Center"/>
    <Setter Property="BorderBrush" Value="#7F9DB9" />
    <Setter Property="BorderThickness" Value="1" />
</Style>

Has anyone experienced this rendering/alias problem in WPF and/or solved it?

Answer 1

Just a shot in the dark: is SnapsToDevicePixels set to true for the Border in the TextBox? You can use Snoop to check.