#include?
#include?
#include?
#include?“keytest.h“
#include?“ui_keytest.h“

Keytest::Keytest（QWidget?*parent）?:
????QWidget（parent）
????ui（new?Ui::Keytest）

{
?????ui->setupUi（this）;
?????m_fd?=?open（::getenv（“KEYPAD_DEV“）?O_RDONLY?|?O_NONBLOCK）;

?????if?（m_fd??????{
?????????QMessageBox::information（this“Error“?“Fail?to?open?Please?check?your?key??device“）;
?????????return;
?????}

?????memset（m_oldButtonsState?0?sizeof（m_oldButtonsState））;
?????m_notifyobject?=?new?QSocketNotifier（m_fd?QSocketNotifier::Read?this）;
?????connect?（m_notifyobject?SIGNAL（activated（int））?this?SLOT（keyEvent（）））;
}

Keytest::~Keytest（）
{
?????delete?m_notifyobject;
?????::close（m_fd）;
?????delete?ui;
}

void?Keytest::keyEvent（）
{
??????char?buffer[KEYMAXNUM];
??????memset（buffer?0?sizeof（buffer））;
??????struct?InputData??event;
??????int?nResult=::read（m_fd?&event?sizeof（event））;
??????if?（nResult?!=??sizeof（InputData））
??????{
??????????QMessageBox::information（this“Debug““read?error“）;
??????????return;
??????}
??????switch（event.code）
??????{
??????????case?KEY_UP:
??????????????buffer[0]=event.value;
??????????????break;
??????????case?KEY_DOWN:
??????????????buffer[1]=event.value;
??????????????break;
??????????case?KEY_LEFT:
??????????????buffer[2]=event.value;
??????????????break;
??????????case?KEY_RIGHT:
??????????????buffer[3]=event.value;
??????????????break;
??????????case?KEY_ENTER:
??????????????buffer[4]=event.value;
??????????????break;
??????????case?KEY_ESC:
??????????????buffer[5]=event.value;
??????????????break;
??????????default:
??????????????break;
??????}

??????for?（unsigned?i?=?0;?i???????{
?????????????bool?oldState?=?m_oldButtonsState[i];
?????????????bool?isOn?=?（buffer[i]?&?0x01）;

????????????if?（oldState?!=?isOn）
????????????{
???????????????m_oldButtonsState[i]?=?isOn;
???????????????update（）;??//this?function?will?call?paintEvent
????????????}
??????}

}


void?Keytest::paintEvent（QPaintEvent*）
{
????for（unsigned?i=0;i????{
????????if（m_oldButtonsState[i]）
????????{
????????????switch（i）
????????????{
????????????????case?0://up
????????????????????ui->pbt_up?->setstyleSheet（QString::fromUtf8（“background-color:?rgb（0?0?255）;“））;
????????????????break;

????????????????case?1://down
?????????????????????ui->pbt_down->setstyleSheet（QString::fromUtf8（“background-color:?rgb（0?0?255）;“））;
????????????????break;

????????????????case?2://left
?????????????????????ui->pbt_left->setstyleSheet（QString::fromUtf8（“background-color:?rgb（0?0?255）;“））;
????????????????break;

????????????????case?3://right
?????????????????????ui->pbt_right->setstyleSheet（QString::fromUtf8（“background-color:?rgb（0?0?255）;“））;
????????????????break;

????????????????case?4://enter
?????????????????????ui->pbt_enter->setstyleSheet（QString::fromUtf8（“background-color:?rgb（0?0?255）;“））;
????????????????break;

????????????????case?5:/

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????351??2013-11-12?10:25??keypad\keypad.pro

?????文件???????7959??2014-05-13?11:52??keypad\keypad.pro.user

?????文件???????4676??2013-11-12?10:25??keypad\keytest.cpp

?????文件???????1216??2013-11-12?10:25??keypad\keytest.h

?????文件???????2462??2013-11-12?10:25??keypad\keytest.ui

?????文件????????286??2013-11-12?10:25??keypad\main.cpp

?????目錄??????????0??2014-09-09?11:45??keypad

-----------?---------??----------?-----??----

????????????????16950????????????????????7