CBN_DROPDOWN

Version 3.0

This code specifies that the list box of a combo box will be dropped down. It is sent just before the combo-box list box is made visible. The control's parent window receives this code through a WM_COMMAND message from the control.

Parameter

Description

 

wParam

Specifies the control ID of the combo box.

 

lParam

Contains the combo-box window handle in its low-order word and the CBN_DROPDOWN code in the high-order word.

 

Comments

This message does not occur if the combo box does not contain a drop-down list box.