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system 10.9 of 26/11/2025,
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FORESIGHT
ExpanderState(Row: Integer; Column: Integer): TriState;
Row. Index of the row that contains the expander. The available value of the parameter is in the range [0, RowsCount).
Column. Index of the column that contains the expander. The available value of the parameter is in the range [0, ColumnsCount).
The ExpanderState property determines the state of the expander in the cell, which coordinates are passed by input parameters.
Expander state:
TriState.OnOption. The expander is expanded.
TriState.OffOption. The expander is collapsed.
TriState.Undefined. The expander is deleted from the cell if it was created.
The property use is given in the example for ITabSheet.CreateExpander.
See also: