WPF TextBox Caret Disappearing

Question

I'm developing a WPF application that has TextBox components.

I'm having a problem with the caret of the text boxes. It seems that, depending on the location of the TextBox itself, the caret disappears on certain specific locations

Caret showing:

Caret disappears:

Caret returns:

The TextBox style is very simple:

<Style TargetType="{x:Type TextBox}" x:Key="FormTextBox">
    <Setter Property="Width" Value="464"/>
    <Setter Property="Height" Value="74"/>
    <Setter Property="HorizontalAlignment" Value="Left"/>
    <Setter Property="FontFamily" Value="Microsoft Sans Serif"/>
    <Setter Property="FontSize" Value="43.2"/>
    <Setter Property="MaxLength" Value="50"/>
</Style>

I tried even setting the font to Courier New which is monospace font, same thing.

Do you have any event handler on text change? Can't reproduce this on a simple wpf app — CharithJ, Dec 25 '16 at 10:16
No, But on the window containing the `UserControl` I have this http://stackoverflow.com/a/19579704/975959 in order to support multi resolution — La bla bla, Dec 25 '16 at 11:12

score 3 · Answer 1 · edited May 23 '17 at 12:16

3

The problem seems to be common (1, 2) with the scale transformation, which is being applied by the behavior you mentioned in comments.

mainElement.LayoutTransform = scaleTransform;

And from MSDN, there's no

effective solution for this issue.

So, if you want to support multi-resolution, I would recommend ViewBox; simple, and do the job.

edited May 23 '17 at 12:16

Community

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answered Dec 25 '16 at 13:47

Aly Elhaddad

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Thanks, I tried replacing the Behavior with the ViewBox, but it didn't solve the Caret issue, Still sometimes missing. – La bla bla Dec 25 '16 at 15:11

WPF TextBox Caret Disappearing

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