RAD Studio VCL Reference
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Makes list item multi-select operate with Shift and CTRL keys.
property ExtendedSelect: Boolean;
__property Boolean ExtendedSelect;
ExtendedSelect only has effect when the MultiSelect is true.
When ExtendedSelect is true, the Shift key (in conjunction with the left mouse button, or arrow keys) is used to select a contiguous sequence of list items. And the Ctrl key is used (in conjunction with the left mouse buttton) to select non-contiguous list items.
When ExtendedSelect is false, Multi-Select operates very differently. The Shift and Ctrl keys are not recognised. List items are always selected individually in any sequence. Reselecting a selected list item will deselect it. Use the arrow and spacebar keys, or the left mouse button to make selections.
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