The CBN_EDITUPDATE notification message is sent when the edit control portion of a combo box is about to display altered text. This notification message is sent after the control has formatted the text, but before it displays the text. The parent window of the combo box receives this notification message through the WM_COMMAND message.
CBN_EDITUPDATE
idComboBox = (int) LOWORD(wParam); // identifier of combo box
hwndComboBox = (HWND) lParam; // handle of combo box
Remarks
If the combo box has the CBS_DROPDOWNLIST style, this notification message does not occur.
See Also