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CB_SHOWDROPDOWN Overview  Group

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. 

CB_SHOWDROPDOWN 

wParam = (WPARAM) (BOOL) fShow;     // the show/hide flag 

lParam = 0;                         // not used; must be zero 

 

Parameters

fShow
Value of wParam. 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.

Return Values

The return value is always TRUE.

Remarks

This message has no effect on a combo box created with the CBS_SIMPLE style.

See Also

CB_GETDROPPEDSTATE 

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