TextBoxBase.GetCharIndexFromPosition Method

Retrieves the index of the character nearest to the specified location.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public virtual int GetCharIndexFromPosition(
	Point pt
)

Parameters

pt
Type: System.Drawing.Point

The location to search.

Return Value

Type: System.Int32
The zero-based character index at the specified location.

This method returns the character index that is closest to the position specified in the pt parameter. The character index is a zero-based index of text in the control, including spaces. You can use this method to determine where in the text the user has the mouse over by passing the mouse coordinates to this method. This can be useful if you want to perform tasks when the user rests the mouse pointer over a word in the text of the control.

Important noteImportant

If the specified location is not within the client rectangle of the control, or is beyond the last character in the control, the return value is the index of the last character.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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