BCGControlBar Pro for MFC
void CBCGPComboBox::SetPrompt ( LPCTSTR  lpszPrompt,
COLORREF  clrText = (COLORREF)-1,
BOOL  bRedraw = TRUE 
)

Sets a prompt displayed when the combo box text is empty.

Parameters
lpszPromptThe prompt.
clrTextThe prompt color.
bRedrawSpecifies whether a control should be redrawn.