wince入门记录C#

[DllImport("coredll.dll")]
        public static extern IntPtr CreateFile(String lpFileName, UInt32 dwDesiredAccess, UInt32 dwShareMode, IntPtr lpSecurityAttributes, UInt32 dwCreationDisposition, UInt32 dwFlagsAndAttributes, IntPtr hTemplateFile);
        [DllImport("coredll.dll")]
        public static extern bool DeviceIoControl(IntPtr hDevice, UInt32 dwIoControlCode, Byte[] lpInBuffer, UInt32 nInBufferSize, Byte[] lpOutBuffer, UInt32 nOutBufferSize, UInt32 lpBytesReturned, IntPtr lpOverlapped);
        [DllImport("coredll.dll")]
        public static extern bool CloseHandle(IntPtr hDevice);

        // 定义常量
        const UInt32 OPEN_EXISTING = 3;
        const UInt32 GENERIC_READ = 0x80000000;
        const UInt32 GENERIC_WRITE = 0x40000000;
        const Int32 INVALID_HANDLE_VALUE = -1;

wince-驱动  22:33:29
 hPort = CreateFile("LED1:", GENERIC_READ | GENERIC_WRITE, 0, IntPtr.Zero, OPEN_EXISTING, 0, IntPtr.Zero);
 private IntPtr hPort;



DeviceIoControl(hPort, LED_1_OFF, null, 0, null, 0, 0, IntPtr.Zero);


using System.Runtime.InteropServices;


 hPort = CreateFile("LED1:", GENERIC_READ | GENERIC_WRITE, 0, IntPtr.Zero, OPEN_EXISTING, 0, IntPtr.Zero);
 private IntPtr hPort;






DeviceIoControl(hPort, LED_1_OFF, null, 0, null, 0, 0, IntPtr.Zero);




using System.Runtime.InteropServices;

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