IntPtr OpenDevice(string devicePath, DeviceModeType deviceMode, AccessModeType accessMode, ShareModeType shareMode)
{
var securityAttributes = Kernel32Api.SECURITY_ATTRIBUTES.Create();
var flags = 0;
// FILE_FLAG_OVERLAPPED is used for async i/o
//if (deviceMode == DeviceModeType.Overlapped) {
flags = 0x40000000; //FILE_FLAG_OVERLAPPED;
//}
// internal const short FILE_SHARE_READ = 0x1;
// internal const short FILE_SHARE_WRITE = 0x2;
// may be required to set shareMode
//dwCreationDisposition == 3 (OPEN_EXISTING)
return(Kernel32Api.CreateFile(devicePath, (uint)accessMode, (int)shareMode, ref securityAttributes, 3, flags, 0));
}
public DeviceContext(string devicePath, DeviceModeType deviceMode = DeviceModeType.NonOverlapped, AccessModeType accessMode = AccessModeType.None, ShareModeType shareMode = ShareModeType.ShareRead | ShareModeType.ShareWrite)
{
Handle = OpenDevice(devicePath, deviceMode, accessMode, shareMode);
}
