isCheckStateMixed constant
Whether a tristate checkbox is in its mixed state.
If this is true, the check box this semantics node represents is in a mixed state.
For example, a Checkbox with Checkbox.tristate set to true can have checked, unchecked, or mixed state.
Must be false when the checkbox is either checked or unchecked.
Implementation
static const SemanticsFlag isCheckStateMixed = SemanticsFlag._(_kIsCheckStateMixedIndex, 'isCheckStateMixed');