BCGControlBar Pro for MFC
void CBCGPPropList::EnableSearchBox ( BOOL  bEnable = TRUE,
LPCTSTR  lpszPrompt = NULL,
BOOL  bSimplifiedIcon = FALSE 

Shows or hides a search box.

Call this method to show or hide the search box located at the top of property list. When user types a property name or a part of property name, the property list displays only those properties that match search criteria.

bEnableTRUE - show search box; FALSE - hide search box.
lpszPromptSpecifies a prompt displayed in the box.
bSimplifiedIconSpecifies whether search box icon has a simpliflied look.