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B.8.2 LCD Display
The functions used to control the LCD display are contained in the Dynamic C LIB\DIS-
PLAYS\GRAPHIC\GRAPHIC.LIB library. When x and y coordinates on the display screen
are specified, x can range from 0 to 121, and y can range from 0 to 31. These numbers rep-
resent pixels from the top left corner of the display.
void glInit(void);
Initializes the display devices, clears the screen.
RETURN VALUE
None.
SEE ALSO
glDispOnOFF, glBacklight, glSetContrast, glPlotDot, glBlock, glPlotDot,
glPlotPolygon, glPlotCircle, glHScroll, glVScroll, glXFontInit, glPrintf,
glPutChar, glSetBrushType, glBuffLock, glBuffUnlock, glPlotLine
void glBackLight(int onOff);
Turns the display backlight on or off.
PARAMETER
onOff turns the backlight on or off
1—turn the backlight on
0—turn the backlight off
RETURN VALUE
None.
SEE ALSO
glInit, glDispOnoff, glSetContrast
void glDispOnOff(int onOff);
Sets the LCD screen on or off. Data will not be cleared from the screen.
PARAMETER
onOff turns the LCD screen on or off
1—turn the LCD screen on
0—turn the LCD screen off
RETURN VALUE
None.
SEE ALSO
glInit, glSetContrast, glBackLight
144
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