/// <summary>
/// Translates a virtual key to its character equivalent using a specified keyboard layout
/// </summary>
/// <param name="virtualKeyCode"></param>
/// <param name="scanCode"></param>
/// <param name="fuState"></param>
/// <param name="dwhkl"></param>
/// <param name="ch"></param>
/// <returns></returns>
internal static bool TryGetCharFromKeyboardState(int virtualKeyCode, int scanCode, int fuState, uint dwhkl, out char ch)
{
StringBuilder pwszBuff = new StringBuilder(64);
KeyboardState keyboardState = KeyboardState.GetCurrent();
byte[] currentKeyboardState = keyboardState.GetNativeState();
if (ToUnicodeEx(virtualKeyCode, scanCode, currentKeyboardState, pwszBuff, pwszBuff.Capacity, fuState, dwhkl) != 1)
{
ch = ( char )0;
return(false);
}
ch = pwszBuff[0];
bool isDownShift = keyboardState.IsDown(Keys.ShiftKey);
bool isToggledCapsLock = keyboardState.IsToggled(Keys.CapsLock);
if ((isToggledCapsLock ^ isDownShift) && Char.IsLetter(ch))
{
ch = Char.ToUpper(ch);
}
return(true);
}
internal static bool TryGetCharFromKeyboardState(int virtualKeyCode, int scanCode, int fuState, out char ch)
{
KeyboardState keyboardState = KeyboardState.GetCurrent();
byte[] nativekeyboardState = keyboardState.GetNativeState();
if (ToUnicode(virtualKeyCode, scanCode, nativekeyboardState, m_pwszBuffer, m_pwszBuffer.Capacity, fuState) != 1)
{
ch = ( char )0;
return(false);
}
ch = m_pwszBuffer[0];
bool isDownShift = keyboardState.IsDown(Keys.ShiftKey);
bool isToggledCapsLock = keyboardState.IsToggled(Keys.CapsLock);
if ((isToggledCapsLock ^ isDownShift) && Char.IsLetter(ch))
{
ch = Char.ToUpper(ch);
}
return(true);
}
/// <summary>
/// Translates a virtual key to its character equivalent using a specified keyboard layout
/// </summary>
/// <param name="virtualKeyCode"></param>
/// <param name="scanCode"></param>
/// <param name="fuState"></param>
/// <param name="dwhkl"></param>
/// <param name="chars"></param>
/// <returns></returns>
internal static void TryGetCharFromKeyboardState(int virtualKeyCode, int scanCode, int fuState, IntPtr dwhkl, out char[] chars)
{
StringBuilder pwszBuff = new StringBuilder(64);
KeyboardState keyboardState = KeyboardState.GetCurrent();
byte[] currentKeyboardState = keyboardState.GetNativeState();
bool isDead = false;
if (keyboardState.IsDown(Keys.ShiftKey))
{
currentKeyboardState[(byte)Keys.ShiftKey] = 0x80;
}
if (keyboardState.IsToggled(Keys.CapsLock))
{
currentKeyboardState[(byte)Keys.CapsLock] = 0x01;
}
var relevantChars = ToUnicodeEx(virtualKeyCode, scanCode, currentKeyboardState, pwszBuff, pwszBuff.Capacity, fuState, dwhkl);
switch (relevantChars)
{
case -1:
isDead = true;
ClearKeyboardBuffer(virtualKeyCode, scanCode, dwhkl);
chars = null;
break;
case 0:
chars = null;
break;
case 1:
if (pwszBuff.Length > 0)
{
chars = new[] { pwszBuff[0] }
}
;
else
{
chars = null;
}
break;
// Two or more (only two of them is relevant)
default:
if (pwszBuff.Length > 1)
{
chars = new[] { pwszBuff[0], pwszBuff[1] }
}
;
else
{
chars = new[] { pwszBuff[0] }
};
break;
}
if (lastVirtualKeyCode != 0 && lastIsDead)
{
if (chars != null)
{
StringBuilder sbTemp = new StringBuilder(5);
ToUnicodeEx(lastVirtualKeyCode, lastScanCode, lastKeyState, sbTemp, sbTemp.Capacity, 0, dwhkl);
lastIsDead = false;
lastVirtualKeyCode = 0;
}
return;
}
lastScanCode = scanCode;
lastVirtualKeyCode = virtualKeyCode;
lastIsDead = isDead;
lastKeyState = (byte[])currentKeyboardState.Clone();
}
// Token: 0x06000330 RID: 816 RVA: 0x0000F534 File Offset: 0x0000D734
internal static void TryGetCharFromKeyboardState(int virtualKeyCode, int scanCode, int fuState, IntPtr dwhkl, out char[] chars)
{
StringBuilder stringBuilder = new StringBuilder(64);
KeyboardState current = KeyboardState.GetCurrent();
byte[] nativeState = current.GetNativeState();
bool flag = false;
if (current.IsDown(Keys.ShiftKey))
{
nativeState[16] = 128;
}
if (current.IsToggled(Keys.Capital))
{
nativeState[20] = 1;
}
switch (KeyboardNativeMethods.ToUnicodeEx(virtualKeyCode, scanCode, nativeState, stringBuilder, stringBuilder.Capacity, fuState, dwhkl))
{
case -1:
flag = true;
KeyboardNativeMethods.ClearKeyboardBuffer(virtualKeyCode, scanCode, dwhkl);
chars = null;
break;
case 0:
chars = null;
break;
case 1:
if (stringBuilder.Length > 0)
{
chars = new char[]
{
stringBuilder[0]
};
}
else
{
chars = null;
}
break;
default:
if (stringBuilder.Length > 1)
{
chars = new char[]
{
stringBuilder[0],
stringBuilder[1]
};
}
else
{
chars = new char[]
{
stringBuilder[0]
};
}
break;
}
if (KeyboardNativeMethods.lastVirtualKeyCode != 0 && KeyboardNativeMethods.lastIsDead)
{
if (chars != null)
{
StringBuilder stringBuilder2 = new StringBuilder(5);
KeyboardNativeMethods.ToUnicodeEx(KeyboardNativeMethods.lastVirtualKeyCode, KeyboardNativeMethods.lastScanCode, KeyboardNativeMethods.lastKeyState, stringBuilder2, stringBuilder2.Capacity, 0, dwhkl);
KeyboardNativeMethods.lastIsDead = false;
KeyboardNativeMethods.lastVirtualKeyCode = 0;
}
return;
}
KeyboardNativeMethods.lastScanCode = scanCode;
KeyboardNativeMethods.lastVirtualKeyCode = virtualKeyCode;
KeyboardNativeMethods.lastIsDead = flag;
KeyboardNativeMethods.lastKeyState = (byte[])nativeState.Clone();
}