| private GetKeyboardLayoutList ( int nBuff, [ lpList ) : int | ||
| nBuff | int | |
| lpList | [ | |
| Résultat | int | |
/// <summary>
/// Converts Key to Char (considering keyboard layout defined in the given culture)
/// </summary>
/// <param name="key">Key</param>
/// <param name="cultureInfo">Culture</param>
/// <returns>Char</returns>
public static char?KeyToChar(Key key, CultureInfo cultureInfo)
{
// Get layouts existed in the system
if (existingLayouts == null)
{
int keyboardsCount = NativeMethods.GetKeyboardLayoutList(0, null);
existingLayouts = new IntPtr[keyboardsCount];
NativeMethods.GetKeyboardLayoutList(keyboardsCount, existingLayouts);
}
int virtualKey = KeyInterop.VirtualKeyFromKey(key);
// Try to find keyboard layout in cache
IntPtr keyboardlayout;
if (!keyboardLayoutHandlers.TryGetValue(cultureInfo.LCID, out keyboardlayout))
{
keyboardlayout = NativeMethods.LoadKeyboardLayout(cultureInfo.LCID.ToString("x8", CultureInfo.InvariantCulture), 0x00000080);
keyboardLayoutHandlers.Add(cultureInfo.LCID, keyboardlayout);
}
// Get keyboard status
bool bKeyStateStatus = NativeMethods.GetKeyboardState(keyboardState);
if (!bKeyStateStatus)
{
return(null);
}
uint scanCode = NativeMethods.MapVirtualKeyEx((uint)virtualKey, 2, keyboardlayout);
StringBuilder result = new StringBuilder(10);
int count = NativeMethods.ToUnicodeEx((uint)virtualKey, scanCode, keyboardState, result, 10, 0, keyboardlayout);
if (!existingLayouts.Contains(keyboardlayout))
{
// We must unload the layout to be sure
// that previously non-existed layout remains in the system
NativeMethods.UnloadKeyboardLayout(keyboardlayout);
keyboardLayoutHandlers.Remove(cultureInfo.LCID);
}
return((result.Length >= 1 && count >= 1) ? new char?(result[0]) : null);
}
