public static void LockToggleKey(ToggleVirtualKeyCode value)
{
if (!IsToggleKeyLocked(value))
{
PressReleaseToggleKey(value);
}
}
static void Main(string[] args)
{
ToggleVirtualKeyCode[] toggleVirtualKeyCodes = new ToggleVirtualKeyCode[] { ToggleVirtualKeyCode.Capital, ToggleVirtualKeyCode.Insert, ToggleVirtualKeyCode.NumLock, ToggleVirtualKeyCode.Scroll };
foreach (ToggleVirtualKeyCode toggleVirtualKeyCode in toggleVirtualKeyCodes)
{
Keyboard.UnlockToggleKey(toggleVirtualKeyCode);
}
}
/// <summary>
/// From System.Windows.Forms.Control.IsKeyLocked, with ToggleVirtualKeyCode subset of VirtualKeyCode
/// </summary>
/// <param name="value">VirtualKeyCode that can have a toggle.</param>
/// <returns>If toggle key was locked.</returns>
public static bool IsToggleKeyLocked(ToggleVirtualKeyCode value)
{
// Detecting this with GetAsyncKeyState fails, though The Old New Thing indicates it should: http://blogs.msdn.com/b/oldnewthing/archive/2004/11/30/272262.aspx
//short asyncKeyState = User32Dll.GetAsyncKeyState((int)value);
short keyState = User32Dll.GetKeyState((int)value);
if ((value != ToggleVirtualKeyCode.Insert) && (value != ToggleVirtualKeyCode.Capital))
{
return((keyState & 0x8001) != 0); // Insert, Captial have both bits set
}
return((keyState & 1) != 0); // Scroll, NumLock have only lower bit set
}
public static void PressReleaseToggleKey(ToggleVirtualKeyCode value)
{
VirtualKeyCode virtualKeyCode = (VirtualKeyCode)value; // we can do this safely: VirtualKeyCode is a superset of ToggleVirtualKeyCode
pressReleaseKey(virtualKeyCode);
}
