TRichView Reference | TRichView

TCustomRichView.GetSelectionBounds

Returns bounds of selected part of document.

procedure GetSelectionBounds(var StartItemNo, StartItemOffs,

  EndItemNo, EndItemOffs: Integer; Normalize: Boolean);

Parameters

StartItemNo – index of the first selected item.

StartItemOffs:

▪if the first item is a text item, then the selection start is before the StartItemOffs-th character of string (characters in strings are counted from 1, the last position (after the text item) is text length+1).

▪if the first item is not a text, then

▪if StartItemOffs=0, then the selection start is before the first item;

▪if StartItemOffs=1, then the selection start is after the first item.

EndItemNo – index of the last selected item.

EndItemOffs:

▪if the last item is a text item, then the selection end is before the EndItemOffs-th character of string (characters in strings are counted from 1, the last position (after the text item) is text length+1).

▪if the last item is not a text, then

▪if EndItemOffs=0, then the selection end is before the last item

▪if EndItemOffs=1, then the selection end is after the last item.

Normalize:

▪if True, the upper bound of the selection is returned in StartItemNo:StartItemOffs, and the lower bound is in EndItemNo:EndItemOffs;

▪if False, bounds are returned as they were selected by user.

The selection is empty if

▪StartItemNo=-1 or

▪StartItemNo=EndItemNo and StartItemOffs=EndItemOffs.

This method must be called only when the document is formatted.

If you want to get selection bounds using richedit-like parameters (SelStart and SelLength), use RVGetSelection from RVLinear unit instead.

See also methods:

▪SetSelectionBounds.

See also:

▪Working with selection.