ComboBox_SetMinVisible macro (commctrl.h)

Sets the minimum number of visible items in the drop-down list of a combo box.

BOOL ComboBox_SetMinVisible(
   HWND hwnd,
   INT  iMinVisible
);

hwnd

Type: HWND

The combo box.

iMinVisible

Type: INT

The minimum number of visible items.

Type: BOOL

If the macro succeeds, it returns TRUE. Otherwise it returns FALSE.

When the number of items in the drop-down list is greater than the minimum, the combo box uses a scroll bar. By default, 30 is the minimum number of visible items.

Combobox_SetMinVisible (hwnd, iMinVisible)

is equivalent to the following call.

SendMessage((hwnd), CB_SETMINVISIBLE, (WPARAM) iMinVisible, 0);

To use ComboBox_SetMinVisible, the application must specify comctl32.dll version 6 in the manifest. For more information, see Enabling Visual Styles.

CB_SETMINVISIBLE