The following notification codes apply to edit controls:
| Message | Description | |
| EN_CHANGE | Indicates that the user has taken some action that may have changed the content of the text. | |
| EN_ERRSPACE | Indicates that the edit control is out of space. | |
| EN_HSCROLL | Indicates that the user has clicked the edit control's horizontal scroll bar with the mouse; the parent window is notified before the screen is updated. | |
| EN_KILLFOCUS | Indicates that the edit control has lost the input focus. | |
| EN_MAXTEXT | Specifies that the current insertion has exceeded a specified number of characters for the edit control. | |
| EN_SETFOCUS | Indicates that the edit control has obtained the input focus. | |
| EN_UPDATE | Specifies that the edit control will display altered text. | |
| EN_VSCROLL | Indicates that the user has clicked the edit control's vertical scroll bar with the mouse; the parent window is notified before the screen is updated. |