private int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam)
{
if (nCode == 0)
{
EventMsg msg = (EventMsg)Marshal.PtrToStructure(lParam, typeof(EventMsg));
if (wParam == 0x100) //WM_KEYDOWN=0x100
{
_char.VirtKey = msg.message & 0xff; //虚拟吗
_char.ScanCode = msg.paramL & 0xff; //扫描码
if (_char.VirtKey == (int)Keys.LShiftKey)
{
goto END1;
}
StringBuilder strKeyName = new StringBuilder(225);
if (GetKeyNameText(_char.ScanCode * 65536, strKeyName, 255) > 0)
{
_char.KeyName = strKeyName.ToString().Trim(new char[] { ' ', '\0' });
}
else
{
_char.KeyName = "";
}
byte[] kbArray = new byte[256];
uint uKey = 0;
GetKeyboardState(kbArray);
if (ToAscii(_char.VirtKey, _char.ScanCode, kbArray, ref uKey, 0))
{
_char.Ascii = uKey;
_char.Chr = Convert.ToChar(uKey);
}
TimeSpan ts = DateTime.Now.Subtract(_string.Time);
// Debug.WriteLine($"ts={ts.TotalMilliseconds} char:'{_char.Chr.ToString()}' code:{(int)(_char.Chr)}");
Debug.WriteLine($"ts={ts.TotalMilliseconds} code:{(int)(_char.Chr)}");
if (_char.Chr == 0)
{
goto END1;
}
if (ts.TotalMilliseconds > TIME_SHTRESHOLD)
{
//时间戳，大于50 毫秒表示手动输入
//strBarCode = barCode.Chr.ToString();
_barcode.Remove(0, _barcode.Length);
_barcode.Append(_char.Chr.ToString());
//_char.OriginalChrs = " " + Convert.ToString(_char.Chr);
//_char.OriginalAsciis = " " + Convert.ToString(_char.Ascii);
//_char.OriginalBarCode = Convert.ToString(_char.Chr);
}
else
{
_barcode.Append(_char.Chr.ToString());
Debug.WriteLine($"msg.message={(msg.message & 0xff)} _barcode:'{_barcode.ToString()}'");
if ((msg.message & 0xff) == 13 && _barcode.Length > 3)
{
// 回车
_string.Barcode = _barcode.ToString();// barCode.OriginalBarCode;
_string.IsValid = true;
_barcode.Remove(0, _barcode.Length);
Debug.WriteLine($"isValid = true");
}
}
_string.Time = DateTime.Now;
try
{
if (InputLine != null &&
_string.IsValid
)
{
Debug.WriteLine($"trigger callback");
AsyncCallback callback = new AsyncCallback(AsyncBack);
Delegate[] delArray = InputLine.GetInvocationList();
foreach (Delegate_lineFeed del in delArray)
{
try
{
del.BeginInvoke(_string, callback, del); // 异步调用防止界面卡死
}
catch (Exception ex)
{
throw ex;
}
}
//BarCodeEvent(barCode);//触发事件
_string.Barcode = "";
//_char.OriginalChrs = "";
//_char.OriginalAsciis = "";
//_char.OriginalBarCode = "";
}
}
catch (Exception)
{
throw;
}
finally
{
_string.IsValid = false;
_string.Time = DateTime.Now;
}
}
}
END1:
return(CallNextHookEx(hKeyboardHook, nCode, wParam, lParam));
}
private int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam)
{
if (nCode == 0)
{
EventMsg msg = (EventMsg)Marshal.PtrToStructure(lParam, typeof(EventMsg));
if (wParam == WM_KEYUP)
{
int vkCode = Marshal.ReadInt32(lParam);
Keys key = (Keys)vkCode;
if (key == Keys.LShiftKey)
{
_shift = false;
goto END1;
}
}
if (wParam == WM_KEYDOWN)//WM_KEYDOWN=0x100
{
int vkCode = Marshal.ReadInt32(lParam);
Keys key = (Keys)vkCode;
if (key == Keys.LShiftKey)
{
_shift = true;
// Console.WriteLine($"modi {(System.Windows.Forms.Keys)vkCode}");
goto END1;
}
TimeSpan ts = DateTime.Now.Subtract(_string.Time);
if (ts.TotalMilliseconds > TIME_SHTRESHOLD)
{
_barcode.Clear();
}
_string.Time = DateTime.Now;
//KeysConverter kc = new KeysConverter();
//string keyChar = kc.ConvertToString(key);
string keyChar = GetKeyString(key, _shift);
Debug.WriteLine($"keyChar='{keyChar}', key='{key.ToString()}'");
_barcode.Append(keyChar);
// 保护缓冲区
if (_barcode.Length > 1000)
{
_barcode.Clear();
}
Debug.WriteLine($"msg.message={(msg.message & 0xff)} _barcode:'{_barcode.ToString()}'");
if (InputChar != null)
{
CharInput input = new CharInput {
Key = key,
KeyChar = keyChar,
};
AsyncCallback callback = new AsyncCallback(AsyncBackCharFeed);
Delegate[] delArray = InputChar.GetInvocationList();
foreach (Delegate_charFeed del in delArray)
{
try
{
del.BeginInvoke(input, callback, del);
}
catch (Exception ex)
{
throw ex;
}
}
}
if ((msg.message & 0xff) == 13 && _barcode.Length > 3)
{
// 回车
_string.Barcode = _barcode.ToString();// barCode.OriginalBarCode;
_string.IsValid = true;
_barcode.Remove(0, _barcode.Length);
Debug.WriteLine($"isValid = true");
}
else
{
goto END1;
}
try
{
if (InputLine != null
// && _string.IsValid
)
{
Debug.WriteLine($"trigger callback");
AsyncCallback callback = new AsyncCallback(AsyncBackLineFeed);
Delegate[] delArray = InputLine.GetInvocationList();
foreach (Delegate_lineFeed del in delArray)
{
try
{
del.BeginInvoke(_string, callback, del); // 异步调用防止界面卡死
}
catch (Exception ex)
{
throw ex;
}
}
//BarCodeEvent(barCode);//触发事件
_string.Barcode = "";
//_char.OriginalChrs = "";
//_char.OriginalAsciis = "";
//_char.OriginalBarCode = "";
}
}
catch (Exception)
{
throw;
}
finally
{
_string.IsValid = false;
_string.Time = DateTime.Now;
}
}
}
END1:
if (Handled == true)
{
return(1);
}
return(CallNextHookEx(hKeyboardHook, nCode, wParam, lParam));
}