To get TextChange, ListBox select, ComboBox Select event

CtrlGetSubCommand:
The CtrlGetSubCommand function retrieves the action performed on a control in a custom dialog. For example, CtrlGetSubCommand can tell you if the user single-clicked or double-clicked a list box or combo box control. It can also tell you when the contents of an edit field have changed.

Advanced developers can call CmdGetHwndDlg to handle additional information.

Syntax:
CtrlGetSubCommand (szDialogName);

szDialogName -- Specifies the name of a custom dialog.
Return Values:
CtrlGetSubCommand Return Values:
EDITBOX_CHANGE (-1007) -- The contents of the edit box have changed.
LISTBOX_ENTER (-1008) -- The user double-clicked a list box item.
LISTBOX_SELECT (-1009) -- The user single-clicked a list box item.