private static IntPtr InstallHook(KeyHook keyHook)
{
using (var curProc = Process.GetCurrentProcess())
using (var curModule = curProc.MainModule)
{
var handle = HookAPI.SetWindowsHookEx(HookType.WH_KEYBOARD_LL, hookProc, HookAPI.GetModuleHandle(curModule.ModuleName), 0);
if (handle == IntPtr.Zero)
{
throw new HookException("Failed to install hook");
}
hook = new HookContainer
{
Handle = handle,
KeyHooks = new List <KeyHook> {
keyHook
}
};
return(handle);
}
}
private static int KeyboardHookCallback(int code, IntPtr wParam, IntPtr lParam)
{
var ret = false;
if (code >= 0)
{
var key = (Keys)Marshal.ReadInt32(lParam);
var mEvent = (MessageEvent)wParam.ToInt32();
switch (key)
{
case Keys.LControlKey:
case Keys.RControlKey:
if (mEvent == MessageEvent.WM_KEYDOWN)
{
ActiveModifiers |= KeyModifiers.Control;
}
else
{
ActiveModifiers &= ~KeyModifiers.Control;
}
break;
case Keys.LShiftKey:
case Keys.RShiftKey:
if (mEvent == MessageEvent.WM_KEYDOWN)
{
ActiveModifiers |= KeyModifiers.Shift;
}
else
{
ActiveModifiers &= ~KeyModifiers.Shift;
}
break;
case Keys.LMenu:
case Keys.RMenu:
if (mEvent == MessageEvent.WM_KEYDOWN)
{
ActiveModifiers |= KeyModifiers.Alt;
}
else
{
ActiveModifiers &= ~KeyModifiers.Alt;
}
break;
}
foreach (var keyHook in hook.KeyHooks)
{
if (keyHook == null)
{
continue;
}
if (keyHook.Condition.Meets(key, mEvent, ActiveModifiers))
{
ret |= keyHook.Blocker;
keyHook.Action.Do();
}
}
}
return(ret ? 1 : HookAPI.CallNextHookEx(IntPtr.Zero, code, wParam, lParam));
}
public static void UnistallHooks()
{
HookAPI.UnhookWindowsHookEx(hook.Handle);
}