Head-mounted display and information display apparatus

A head-mounted display, comprising:

• a reception unit configured to receive
• an operation signal including information on a relative position of a detection target in contact with an input operation surface, which is output from an input device, and
• information on a contact pressure of the detection target against the input operation surface;
• a head-mounted image display element configured to form an image including a plurality of GUIs;
• and
• a display processing unit configured to
• cause, based on the received first operation signal, the head-mounted image display element to display an operation image with an auxiliary image indicating a position of the detection target being overlapped on the image,
• cause, based on the relative position and the contact pressure, the image display element to change a display mode the image,
• select a GUI as a selection candidate from the plurality of GUIs based on the relative position of the detection target, and
• execute display processing which corresponds to the selected GUI on the image display element if the contact pressure of the detection target against the input operation surface in a target area of the input operation surface exceeds a threshold pressure amount.