Windows 8学习笔记（七）Input输入设备

Windows.Device.Input接口提供了识别可用的输入设备并获得这些设备的信息

KeyboardCapabilities

用于判断当前是否连接了键盘设备

其属性KeyboardPresent进行判断，当为0时表示未连接，不为0时表示已连接

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Windows.Devices.Input.KeyboardCapabilities KeyboardCapabilities = new Windows.Devices.Input.KeyboardCapabilities();

string status = string.Format("There is {0} keyboard present\n", KeyboardCapabilities.KeyboardPresent != 0 ? "a" : "no");

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MouseCapabilities

用于判断当前是否连接了鼠标设备

其属性比KeyboardCapabilities多了些，如下：

HorizontalWheelPresent 该值表明是否有带水平滚轮的鼠标连接

MousePresent 表明是否有鼠标连接

NumberOfButtons 该值表明当前连接的鼠标中按钮的数量，若有多个鼠标连接，则返回鼠标按钮个数最多的数量

SwapButtons 该值表明当前连接的鼠标设备中是否具有左右交换按钮的

VerticalWheelPresent 该值表明当前连接的鼠标设备中是否有垂直的滚轮

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Windows.Devices.Input.MouseCapabilities MouseCapabilities = new Windows.Devices.Input.MouseCapabilities();

 

 String info = string.Format("There is {0} mouse present\n", MouseCapabilities.MousePresent != 0 ? "a" : "no");

 info += string.Format("There is {0} vertical mouse wheel present\n", MouseCapabilities.VerticalWheelPresent != 0 ? "a" : "no");

 info += string.Format("There is {0} horizontal mouse wheel present\n", MouseCapabilities.HorizontalWheelPresent != 0 ? "a" : "no");

 info += string.Format("The user has {0}opted to swap the mouse buttons\n", MouseCapabilities.SwapButtons != 0 ? "" : "not ");

 info += string.Format("The mouse has {0} button(s)\n", MouseCapabilities.NumberOfButtons);

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TouchCapabilities

获得连接的触摸数字化仪的功能

Contats 表明支持所有数字化仪的最小联系人数量

TouchPresent 表明当前终端是否有数据化仪

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Windows.Devices.Input.TouchCapabilities TouchCapabilities = new Windows.Devices.Input.TouchCapabilities();

 

 String info = string.Format("There is {0} digitizer present\n", TouchCapabilities.TouchPresent != 0 ? "a" : "no");

info += string.Format("The digitizer supports {0} contacts\n", TouchCapabilities.Contacts);

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PointerDevice

识别连接的指针设备及它们的功能

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var PointerDeviceList = Windows.Devices.Input.PointerDevice.GetPointerDevices();

            string device="";

            foreach (Windows.Devices.Input.PointerDevice PointerDevice in PointerDeviceList)

            {

                 if (PointerDevice.PointerDeviceType == Windows.Devices.Input.PointerDeviceType.Mouse)

                {

                    device ="mouse";

                }

                else if (PointerDevice.PointerDeviceType == Windows.Devices.Input.PointerDeviceType.Pen)

                {

                    device= "pen";

                }

                else

                {

                    device= "touch";

                }

            }

 

今天就看了一点输入设备的功能用法,研究SMS收发信息的功能时,却被刚开始的 SmsDevice.GetDefaultAsync()获取信息设备给绊住了,报的错误是”服务尚未启动。 (异常来自 HRESULT:0x80070426) ”,不知道是不是要先开启什么,望知者还能提醒一番^_^

分类: Windows 8 Metro

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