|
private CreateFile ( string lpFileName, uint dwDesiredAccess, int dwShareMode, SECURITY_ATTRIBUTES &lpSecurityAttributes, int dwCreationDisposition, int dwFlagsAndAttributes, int hTemplateFile ) : |
||
| lpFileName | string | |
| dwDesiredAccess | uint | |
| dwShareMode | int | |
| lpSecurityAttributes | SECURITY_ATTRIBUTES | |
| dwCreationDisposition | int | |
| dwFlagsAndAttributes | int | |
| hTemplateFile | int | |
| return | ||
private static IntPtr OpenDeviceIO(string devicePath, DeviceMode deviceMode, uint deviceAccess)
{
NativeMethods.SECURITY_ATTRIBUTES lpSecurityAttributes = default(NativeMethods.SECURITY_ATTRIBUTES);
int dwFlagsAndAttributes = 0;
if (deviceMode == DeviceMode.Overlapped)
{
dwFlagsAndAttributes = 1073741824;
}
lpSecurityAttributes.lpSecurityDescriptor = IntPtr.Zero;
lpSecurityAttributes.bInheritHandle = true;
lpSecurityAttributes.nLength = Marshal.SizeOf((object)lpSecurityAttributes);
return(NativeMethods.CreateFile(devicePath, deviceAccess, 3, ref lpSecurityAttributes, 3, dwFlagsAndAttributes, 0));
}
private static IntPtr OpenDeviceIO(string devicePath, DeviceMode deviceMode, uint deviceAccess, ShareMode shareMode)
{
var security = new NativeMethods.SECURITY_ATTRIBUTES();
var flags = 0;
if (deviceMode == DeviceMode.Overlapped)
{
flags = NativeMethods.FILE_FLAG_OVERLAPPED;
}
security.lpSecurityDescriptor = IntPtr.Zero;
security.bInheritHandle = true;
security.nLength = Marshal.SizeOf(security);
return(NativeMethods.CreateFile(devicePath, deviceAccess, (int)shareMode, ref security, NativeMethods.OPEN_EXISTING, flags, 0));
}
private static IntPtr OpenDeviceIO(string devicePath, DeviceMode deviceMode, uint deviceAccess, ShareMode shareMode)
{
var security = new NativeMethods.SecurityAttributes();
var flags = 0;
if (deviceMode == DeviceMode.Overlapped)
{
flags = NativeMethods.FileFlagOverlapped;
}
security.lpSecurityDescriptor = IntPtr.Zero;
security.bInheritHandle = true;
security.nLength = Marshal.SizeOf(security);
return(NativeMethods.CreateFile(devicePath, deviceAccess, (int)shareMode, ref security, NativeMethods.OpenExisting, flags, 0));
}
private SafeFileHandle OpenHandle(String devicePathName, Boolean isExclusive)
{
SafeFileHandle hidHandle;
try
{
if (isExclusive)
{
hidHandle = NativeMethods.CreateFile(devicePathName, NativeMethods.GENERIC_READ | NativeMethods.GENERIC_WRITE, 0, IntPtr.Zero, NativeMethods.OpenExisting, 0, 0);
}
else
{
hidHandle = NativeMethods.CreateFile(devicePathName, NativeMethods.GENERIC_READ | NativeMethods.GENERIC_WRITE, NativeMethods.FILE_SHARE_READ | NativeMethods.FILE_SHARE_WRITE, IntPtr.Zero, NativeMethods.OpenExisting, 0, 0);
}
}
catch (Exception)
{
throw;
}
return(hidHandle);
}