GCBASIC documentation
Graphical LCD

Syntax:

    GLCDROTATE LANDSCOPE | PORTRAIT_REV | LANDSCAPE_REV  | PORTRAIT

Explanation:

Rotate the GLCD display to a relative position.

GLCD rotation needs to be supported by the GLCD chipset. NOT all GLCD chipset support these commands.

The options are:

    LANDSCAPE
    PORTRAIT_REV
    LANDSCAPE_REV
    PORTRAIT

The command will rotate the screen and set the following variables using the global variables shown below.

    GLCD_WIDTH
    GLCD_HEIGHT

The command is supported by the following global constants.

    #define LANDSCAPE       1
    #define PORTRAIT_REV    2
    #define LANDSCAPE_REV   3
    #define PORTRAIT        4