Is there any kinds of attached pseudo class support in plan?

[Flithor]

It seems that the pseudo-class can only be extended by inheritance.

[maxkatz6]

No, pseudo-classes set from the outside of the control are not planned.
You can use style classes instead.

[Flithor]

You can just set IsChecked to the value you need.

@rabbitism Hey, what? ListBoxItem has no property named IsChecked

[rabbitism]

@rabbitism Hey, what? ListBoxItem has no property named IsChecked

It has IsSelected property.

[Flithor]

@rabbitism Hey, what? ListBoxItem has no property named IsChecked

It has IsSelected property.

Well, but I'm not want to let "Check" do same work as "Select".

[rabbitism]

Can you explain what you want to achieve?

[Flithor]

Oh~ I can move the CheckBox into DataTemplate!
I'm just digging into a dead end.