你的灯还亮着吗

[yyfly]

请问我怎么通过程序来点亮键盘的三个灯
用什么语言实现都没所谓.
不要用模拟键盘按键的方法.
最好是灯的亮灭不影响键盘状态.

[uoyevoli]

哇，自己写个键盘驱动:)

[Trashy]

鼓励一下~

[老夏Max]

最好是灯的亮灭不影响键盘状态.
＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
呵呵，比较难吧！其他的可以参考：
void CDialogTestDlg::OnButton14()
{
// TODO: Add your control notification handler code here
bool bState=true; //true为按下NumLock,false反之
BYTE keyState[256];

GetKeyboardState((LPBYTE)&keyState);
if( (bState && !(keyState[VK_NUMLOCK] & 1)) ||
(!bState && (keyState[VK_NUMLOCK] & 1)) )
{
// Simulate a key press
keybd_event( VK_NUMLOCK,
0x45,
KEYEVENTF_EXTENDEDKEY | 0,
0 );

// Simulate a key release
keybd_event( VK_NUMLOCK,
0x45,
KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP,
0);
}

}

[老夏Max]

参考：http://dev.csdn.net/Develop/article/33/33986.shtm

[pomelowu]

http://codeguru.earthweb.com/Cpp/W-P/system/keyboard/article.php/c2825/

[an_bachelor]

他说了不想合成键盘消息……

[pomelowu]

There's really nothing fancy about this code, it creates a DOS device for the keyboard device, opens a handle to that device, and calls DeviceIoControl to send IOCTL function codes to the device.

It did require a fair amount digging around in the DDK to create this effect, and it is an interesting twist on an alternate UI mechanism, and thus I felt it might be suitable for inclusion in this archive.


这个是从驱动入手的，应该就是楼主想要的东西了。

[vcmute]

http://my.execpc.com/~geezer/osd/kbd/kbd.c
可惜这个只有Turbo C, DJGPP, Watcom C版

[vcmute]

原理先设中断9处理函数
然后往0x60端口输出ED和1-7
LEDS: write_kbd(0x60, 0xED); /* "set LEDs" command */
temp = 0;
if(kbd_status & KBD_META_SCRL)
temp |= 1;
if(kbd_status & KBD_META_NUM)
temp |= 2;
if(kbd_status & KBD_META_CAPS)
temp |= 4;
write_kbd(0x60, temp); /* bottom 3 bits set LEDs */

P.S。和以前写汇编有点相似

[rushinger]

给楼主鼓鼓劲，我见过用键盘灯显示网络流量的小玩意