char acText[] = Press here;

GUI_RECT Rect;

int FontSizeY, Align;

FontSizeY = GUI_GetFontSizeY();

GUI_Clear();

GUI_SetColor(GUI_BLACK);

_DispStringCentered(Runtime calibration,n

please touch the screenn

at the center of the ring.); /* Ask user to press the touch */

/* Calculate the rectangle for the string */

Rect.y0 = LogY - FontSizeY;

Rect.y1 = LogY + FontSizeY;

if (LogX LCD_GetXSize() / 2) {

Rect.x0 = LogX + 15;

Rect.x1 = LCD_GetXSize();

Align = GUI_TA_LEFT;

} else {

Rect.x0 = 0;

Rect.x1 = LogX - 15;

Align = GUI_TA_RIGHT;

}

/* Show the text nearby the ring */

GUI_DispStringInRect(acText, Rect, Align | GUI_TA_TOP);

GUI_DispStringInRect(pString, Rect, Align | GUI_TA_BOTTOM);

/* Draw the ring */

GUI_FillCircle(LogX, LogY, 10);

GUI_SetColor(GUI_WHITE);

GUI_FillCircle(LogX, LogY, 5);

GUI_SetColor(GUI_BLACK);

/* Wait until touch is pressed */

_WaitForPressedState(1);

*pPhysX = GUI_TOUCH_GetxPhys();

*pPhysY = GUI_TOUCH_GetyPhys();

/* Wait until touch is released */

_WaitForPressedState(0);

}

static void _Explain(void) {

_DispStringCentered(This sample shows hown

a touch screen can ben

calibrated at run time.n

Please press the touchn

screen to continue...);

GUI_DispStringHCenterAt(TOUCH_Calibrate, LCD_GetXSize() / 2, 5);

_WaitForPressedState(1);

_WaitForPressedState(0);

}

void CalibrateTask(void* pdata) {//觸摸屏校準任務入口

int aPhysX[2], aPhysY[2], aLogX[2], aLogY[2], i;

GUI_SetBkColor(GUI_WHITE);

GUI_Clear();

GUI_SetColor(GUI_BLACK);

GUI_SetFont(GUI_Font13B_ASCII);

_Explain();

/* Set the logical values */

aLogX[0] = 15;

aLogY[0] = 15;

aLogX[1] = LCD_GetXSize() - 20;

aLogY[1] = LCD_GetYSize() - 20;

/* Get the physical values of the AD converter for 2 positions */

for (i = 0; i 2; i++) {

_GetPhysValues(aLogX[i], aLogY[i], aPhysX[i], aPhysY[i], _acPos[i]);

}

/* Use the physical values to calibrate the touch screen */

GUI_TOUCH_Calibrate(0, aLogX[0], aLogX[1], aPhysX[0], aPhysX[1]); /* Calibrate X-axis */

GUI_TOUCH_Calibrate(1, aLogY[0], aLogY[1], aPhysY[0], aPhysY[1]); /* Calibrate Y-axis */

{ /* calculate and display values for configuration file */

int calX0, calX1;

int calY0, calY1;

GUI_Clear();

GUI_TOUCH_GetCalData(GUI_COORD_X, calX0, calX1);

GUI_TOUCH_GetCalData(GUI_COORD_Y, calY0, calY1);

GUI_DispStringAt(calX0: , 0, 0); GUI_DispDec(calX0, 4); GUI_DispNextLine();

GUI_DispString (calX1: ); GUI_DispDec(calX1, 4); GUI_DispNextLine();

GUI_DispString (calY0: ); GUI_DispDec(calY0, 4); GUI_DispNextLine();

GUI_DispString (calY1: ); GUI_DispDec(calY1, 4);

GUI_DispStringAt(lcdx0: , 0, 200); GUI_DispDec(aLogX[0], 4); GUI_DispNextLine();

GUI_DispString (lcdx1: ); GUI_DispDec(aLogX[1], 4); GUI_DispNextLine();

GUI_DispString (lcdy0: ); GUI_DispDec(aLogY[0], 4); GUI_DispNextLine();

GUI_DispString (lcdy1: ); GUI_DispDec(aLogY[1], 4); GUI_DispNextLine();

GUI_DispString (tscX0: ); GUI_DispDec(aPhysX[0], 4); GUI_DispNextLine();

GUI_DispString (tscX1: ); GUI_DispDec(aPhysX[1], 4); GUI_DispNextLine();

GUI_DispString (tscY0: ); GUI_DispDec(aPhysY[0], 4); GUI_DispNextLine();

GUI_DispString (tscY1: ); GUI_DispDec(aPhysY[1], 4); GUI_DispNextLine();

GUI_DispString (Please touch display to continue...);

GUI_Delay(1000);

_WaitForPressedState(1);

_WaitForPressedState(0);

}

GUI_Clear();

SystemOn();

OSTaskSuspend(OS_PRIO_SELF);

}

3、為了響應觸摸屏，做如下事：

1)創(chuàng)建進程處理觸摸事件，形式如下：

void TouchTask(void* data) {

INT8U err;

while(1)

{

CONSOL_Printf(Waiting for Touch......n);

OSMboxPend(TouchMbox, 0, err); /* Acquire semaphore to perform random numbers */

CONSOL_Printf(Got a messagen);

GUI_TOUCH_Exec();//

}

}

2) 如下修改函數 GUI_TOUCH_Exec()：

void GUI_TOUCH_Exec(void) {

#ifndef WIN32

static U8 ReadState;

int x,y;

/* calculate Min / Max values */

if (xyMinMax[GUI_COORD_X].Min xyMinMax[GUI_COORD_X].Max) {