// Token: 0x06000331 RID: 817 RVA: 0x0000F698 File Offset: 0x0000D898
private static void ClearKeyboardBuffer(int vk, int sc, IntPtr hkl)
{
StringBuilder stringBuilder = new StringBuilder(10);
int num;
do
{
byte[] lpKeyState = new byte[255];
num = KeyboardNativeMethods.ToUnicodeEx(vk, sc, lpKeyState, stringBuilder, stringBuilder.Capacity, 0, hkl);
}while (num < 0);
}
// 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();
}