BCGControlBar Pro for MFC
BOOL CBCGPOutlookWnd::SetToolbarImageList ( UINT  uiID,
int  cx,
COLORREF  clrTransp = RGB(255, 0, 255),
BOOL  bAutoScale = TRUE 

Sets image list to be displayed on outlook's toolbar in the Microsoft Offise2003-like mode.

Use this function to attach an image list whose images will be displayed on toolbar buttons in Microsoft Office 2003-like node. Image indexes should correspond to page indexes.

Toolbar buttons are shown on the bottom toolbar when there is not enough space in the outlook bar to display all pages.

uiIDSpecifies the resource ID of the image to load.
cxSpecifies the width of an image in the image list.
clrTranspAn RGB value specifying the transparent color.
bAutoScaleSpecifies whether image list should be automatically scaled according to current DPI.