icon resource:

ImageList_Add

Converting image file to .ICO file

Custom GDI+ class

Displaying icons in the system tray (VFP9)

Exporting DLL icon resources as .ICO files

GDI+: Storing DLL icon resources in image files

How to display a user-defined icon in the MessageBox dialog

How to view icons stored in executable files (Icon Viewer)

How to view icons stored in executable files (Icon Viewer) - II

Using LoadLibrary

Windows Shell Icons displayed and exported to ICO files (Vista)