An application sends a CB_SETITEMHEIGHT message to set the height of list items or the selection field in a combo box.
Specifies the component of the combo box for which to set the height.
This parameter must be –1 to set the height of the selection field. It must be zero to set the height of list items, unless the combo box has the CBS_OWNERDRAWVARIABLE style. In that case, the wParam parameter is the zero-based index of a specific list item.
Specifies the height, in pixels, of the combo box component identified by wParam.
If the index or height is invalid, the return value is CB_ERR.
The selection field height in a combo box is set independently of the height of the list items. An application must ensure that the height of the selection field is not smaller than the height of a particular list item.
Minimum supported client
|Windows 2000 Professional [desktop apps only]|
Minimum supported server
|Windows 2000 Server [desktop apps only]|