How does the Windows Shell resize icon overlays?
问题 I've written a Shell Icon Overlay handler that contains a multi-image icon with 256, 48, 32 and 16 bit icons. The overlay bits are in the lower left corner, and respectively are 32, 15, 10 and 6 bits. In Windows Explorer, with the View set to Small, the icons are 16 bits and the overlay selected consumes 6 bits. Medium icons: 48 bits overlaid with 10. All as I expected. When the View is set to Large, a 96 bit icon is used, which is overlaid with 15 bits. Whether this is the 15 bits from the