Metrologic Optimus R, Programming Manual

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90 "C" Programming Guide For Optimus S/R
3.8.4 Clear
clr_eol
Purpose To clear from where the cursor is to the end of the line.
Syntax void clr_eol (void);
Example clr_eol();
Description
This routine clears from where the cursor is to the end of the line, and then
moves the cursor to its original position.
Return None
See Also clr_scr
clr_icon
Purpose
To clear the icon zone on the LCD.
Syntax
void clr_icon (void);
Example clr_icon();
Description The icon zone is an unprintable area reserved for showing some status icons,
such as the battery icon, antenna, system time, etc. Programmers can show
custom icons in this area by using the show_image function.
When calling clr_scr() to clear the screen, this icon zone won't be cleared.
Therefore, if you need to erase the icon zone, you have to call clr_icon().
Return None
See Also
clr_scr
clr_rect
Purpose To clear a rectangular area on the LCD.
Syntax void clr_rect (int left, int top, int width, int height);
int left; /* x coordinate of the upper left corner of the rectangle */
int top; /* y coordinate of the upper left corner of the rectangle */
int width; /* width of the rectangle to be cleared, in dots */
int height; /* height of the rectangle to be cleared, in dots */
Example clr_rect (12, 8, 40, 8);
Description This routine clears a rectangular area on the LCD whose top left position and
size are specified by left, top, width, and height.