How can i set an icon for my own file extension
HKEY_CLASSES_ROOT\.[extension] default key contains a REG_SZ string, that is the name of the next key:
HKEY_CLASSES_ROOT\[that_string]\DefaultIcon default key ("@") contains this:[path_to_icon_file],[zero_based_index]
Example:
HKEY_CLASSES_ROOT\.txt @="MyTextFile" HKEY_CLASSES_ROOT\MyTextFile\DefaultIcon @="C:\WINDOWS\explorer.exe,2"This way, all .txt files will use the third icon from the Explorer executable.