OlkTextBox.SelLength Property (Outlook)
Returns or sets a Long that specifies the number of characters in the current selection. Read/write.
expression A variable that represents an OlkTextBox object.
The default value is zero, which means no text is currently selected.
The SelLength property is always valid, even when the control does not have focus.
Setting SelLength to a value less than zero causes an error. Attempting to set the value greater than MaxLength results in setting SelLength to MaxLength .