BCGSuite for MFC
void CBCGPEdit::SetBrowseButtonImage ( UINT  uiBmpResId,
BOOL  bAutoScale = FALSE 

Allows to set a custom button image.

Use this function to provide the edit control with a custom browse button image. In the standard modes (calculator, file, folder) the appropriate image is taken from the library resources.

uiBmpResIdSpecifies the resource ID of a bitmap.
bAutoScaleSpecifies whether the icon is automatically scaled according to current DPI.