SelectionStart

Property of: TextBox

Value Type: int

Description:

Determines the starting position of a text selection, or -1 if the TextBox has no range of selected text. If the value is -1 or equivalent to TextBox/CursorPosition|CursorPosition, there is no range of text selected. This property uses the same positioning logic as CursorPosition. SelectionStart will be greater than CursorPosition if the cursor is at the beginning of a selection, and less than CursorPosition if the cursor is at the end.

Code Samples

TextBox Selections

This code sample demonstrates reading the current selection of a TextBox using TextBox/CursorPosition|CursorPosition and TextBox/SelectionStart|SelectionStart.

			
				TextBox Selections

				Expected Output
			
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			local textBox = script.Parent

local function showSelection()
	if textBox.CursorPosition == -1 or textBox.SelectionStart == -1 then
		print("No selection")
	else
		local selectedText = string.sub(
			textBox.Text,
			math.min(textBox.CursorPosition, textBox.SelectionStart),
			math.max(textBox.CursorPosition, textBox.SelectionStart)
		)
		print("The selection is: \"" .. selectedText .. "\"")
	end
end

textBox:GetPropertyChangedSignal("CursorPosition"):Connect(showSelection)
textBox:GetPropertyChangedSignal("SelectionStart"):Connect(showSelection)
		
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