Combo Box Notifications
Messages from combo boxes are sent as notifications in the form of
WM_COMMAND messages. The notification message is stored in the high word of the
wParam parameter, and an application can process the following combo box
notification messages.
Notification message
| Description
|
CBN_CLOSEUP
| Indicates the list in a drop-down combo box or drop-down list box is about to
close.
|
CBN_DBLCLK
| Indicates the user has double-clicked a list item in a simple combo box.
|
CBN_DROPDOWN
| Indicates the list in a drop-down combo box or drop-down list box is about to
open.
|
CBN_EDITCHANGE
| Indicates the user has changed the text in the edit control of a simple or
drop-down combo box. This notification message is sent after the altered text is
displayed.
|
CBN_EDITUPDATE
| Indicates the user has changed the text in the edit control of a simple or
drop-down combo box. This notification message is sent before the altered text is
displayed.
|
CBN_ERRSPACE
| Indicates the combo box cannot allocate enough memory to carry out a request,
such as adding a list item.
|
CBN_KILLFOCUS
| Indicates the combo box is about to lose the input focus.
|
CBN_SELCHANGE
| Indicates the current selection has changed.
|
CBN_SELENDCANCEL
| Indicates that the selection made in the drop down list, while it was dropped
down, should be ignored.
|
CBN_SELENDOK
| Indicates that the selection made drop down list, while it was dropped down,
should be accepted.
|
CBN_SETFOCUS
| Indicates the combo box has received the input focus.
|
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-
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-
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-
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