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matrix_keypad.c矩阵键盘和QT映射的问题,求各路大神援助

Other Parts Discussed in Thread: AM3359

我在AM3359上运行的是linux系统,然后做了一个3*3的矩阵键盘。

下面是测试函数:

#define NOKEY 0
#define KEY_ENTER 28
#define KEY_F1 59
#define KEY_F2 60
#define KEY_F3 61
#define KEY_F4 62
#define KEY_UP 103
#define KEY_LEFT 105
#define KEY_RIGHT 106
#define KEY_DOWN 108
#define KEY_MENU 139
int main()
{
int keys_fd;
char ret[2];
struct input_event t;

keys_fd = open("/dev/input/event0", O_RDONLY);
if(keys_fd<=0)
{
printf("open /dev/event0 device error!\n");
return 0;
}

while(1)
{
if(read(keys_fd,&t,sizeof(t))==sizeof(t)) {
if(t.type==EV_KEY)
if(t.value==1||t.value==2)
{
// printf("%d \n", t.code);
switch(t.code)
{
case KEY_F1:
printf("KEY_F1 %s\n",(t.value)?"Pressed":"Released");
break;

case KEY_F2:
printf("KEY_F2 %s\n",(t.value)?"Pressed":"Released");
break;

case KEY_F3:
printf("KEY_F3 %s\n",(t.value)?"Pressed":"Released");
break;

case KEY_F4:
printf("KEY_F4 %s\n",(t.value)?"Pressed":"Released");
break;

case KEY_ENTER:
printf("KEY_ENTER %s\n",(t.value)?"Pressed":"Released");
break;

case KEY_UP:
printf("KEY_UP %s\n",(t.value)?"Pressed":"Released");
break;

case KEY_LEFT:
printf("KEY_LEFT %s\n",(t.value)?"Pressed":"Released");
break;

case KEY_RIGHT:
printf("KEY_RIGHT %s\n",(t.value)?"Pressed":"Released");
break;

case KEY_DOWN:
printf("KEY_DOWN %s\n",(t.value)?"Pressed":"Released");
break;
case KEY_MENU:
printf("KEY_MENU %s\n",(t.value)?"Pressed":"Released");
break;

default:
printf("KEY_11111111111111 %s\n",(t.value)?"Pressed":"Released");
break;
}
}
}
}
close(keys_fd);

return 0;
}

测试之后没问题。按下和抬起都有响应。

然后我用QT,我的QT版本是4.8.1

设置QT的环境变量:export QWS_KEYBOARD="tty:/dev/input/event0"

QT中运行的代码如下:

void MainWindow::keyPressEvent(QKeyEvent *k)
{
int keyvalue = 0;
keyvalue = k->key();
switch(keyvalue)
{
case Qt::Key_F1:
qDebug()<<"Key_F1 = "<<keyvalue;
break;

default:
qDebug()<<"Kvalue = "<<keyvalue;
break;
}
}

然后我运行QT程序,按下F1

打印如下:

Kvalue = 16777216
Kvalue = 45
Kvalue = 16777216
Key_F1 = 0x1000030
Key_F1 = 16777264
Kvalue = 16777216
Kvalue = 16777216
Kvalue = 45
Kvalue = 16777216
Kvalue = 16777249
Kvalue = 16777219
Kvalue = 16777216
Kvalue = 16777288
Kvalue = 16777216
Kvalue = 92
Kvalue = 16777329
Kvalue = 16777219

怎么会有这么多的打印值,default:貌似运行了很多次啊,求大神。