BCGControlBar Pro for MFC
BOOL CBCGPOutlookBarPane::AddButton ( HICON  hIcon,
LPCTSTR  lpszLabel,
UINT  iIdCommand,
int  iInsertAt = -1,
BOOL  bAlphaBlend = FALSE 
)

Inserts a button into an outlook bar's page.

Returns
Nonzero if a button was added successfully; otherwise 0.

Call this function to insert a new button into an outlook bar's page. The button's image can be loaded either from the application resources or from a disk file. If the index specified by iInsertAt is -1, the button is added at the end of the page.

Parameters
hIconHandle to a buttons' icon.
lpszLabelSpecifies the button's text
iIdCommandSpecifies the button control's ID.
iInsertAtSpecifies the zero-based index on the outlook bar's page at which to insert the button.
bAlphaBlendShould be TRUE if the icon uses 32 bit color.