Text property contains a text string associated with the control.
We use the Text property to read the Text of the control or to specify a new string for the Text value. By default, Text is the control name. For edit controls and memos, the Text appears within the control. For combo boxes, the Text is the content of the edit control portion of the combo box.
Note: Controls that display text use either the Caption property or the Text property to specify the text value. Which property is used depends on the type of control. In general, Caption is used for text that appears as a window title or label, while Text is used for text that appears as the content of a control.
Here is the working example of the implementation of Text Property in DelphiVCL.Edit:
# Edit box creation
edtHello = CreateComponent('TEdit',pgOne)
edtHello.Parent = pgOne
edtHello.Text = 'Jim'
edtHello.Name = 'edtFirstName'
edtHello.Left = 145
edtHello.Top = 14
edtHello.Width = 121
edtHello.Height = 30