CB_SHOWDROPDOWN message
An application sends a CB_SHOWDROPDOWN message to show or hide the list box of a combo box that has the CBS_DROPDOWN or CBS_DROPDOWNLIST style.
Parameters
-
wParam
-
A BOOL that specifies whether the drop-down list box is to be shown or hidden. A value of TRUE shows the list box; a value of FALSE hides it.
-
lParam
-
This parameter is not used.
Return value
The return value is always TRUE.
Remarks
This message has no effect on a combo box created with the CBS_SIMPLE style.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows Vista [desktop apps only] |
| Minimum supported server |
Windows Server 2003 [desktop apps only] |
| Header |
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