IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
{
bool block = false;
if (ignore)
{
goto chain;
}
bool pressed = wParam == (IntPtr)WM_KEYDOWN || wParam == (IntPtr)WM_SYSKEYDOWN;
if (nCode >= 0 && pressed || wParam == (IntPtr)WM_KEYUP)
{
int vkCode = Marshal.ReadInt32(lParam);
int sc = Marshal.ReadInt32(lParam, 8);
if (dead || deadkeys.Contains(vkCode))
{
dead = !dead;
goto chain;
}
string typed = MapKey((uint)vkCode, (uint)sc);
block = KeyReceived((Keys)vkCode, typed, pressed);
}
chain:
var next = WindowsAPI.CallNextHookEx(hookId, nCode, wParam, lParam);
return(block ? new IntPtr(1) : next);
}
private IntPtr MouseHook(int code, IntPtr wparam, IntPtr lparam)
{
MOUSEHOOKSTRUCT mh = (MOUSEHOOKSTRUCT )Marshal.PtrToStructure(lparam, typeof(MOUSEHOOKSTRUCT));
// if user set focus on edit control embedded by us then do not open DropDown box
if (mh.hwnd == Handle &&
wparam == (IntPtr)Msg.WM_LBUTTONDOWN &&
m_bDropDown == false && ReadOnly == false)
{
m_bSkipClick = true;
}
return(WindowsAPI.CallNextHookEx(m_mouseHookHandle, code, wparam, lparam));
}
IntPtr MouseHook(int code, IntPtr wparam, IntPtr lparam)
{
MOUSEHOOKSTRUCT mh = (MOUSEHOOKSTRUCT )Marshal.PtrToStructure(lparam, typeof(MOUSEHOOKSTRUCT));
if (mh.hwnd != Handle && !DroppedDown &&
(wparam == (IntPtr)Msg.WM_LBUTTONDOWN || wparam == (IntPtr)Msg.WM_RBUTTONDOWN) ||
wparam == (IntPtr)Msg.WM_NCLBUTTONDOWN)
{
// Loose focus
WindowsAPI.SetFocus(IntPtr.Zero);
}
else if (mh.hwnd != Handle && !DroppedDown &&
(wparam == (IntPtr)Msg.WM_LBUTTONUP || wparam == (IntPtr)Msg.WM_RBUTTONUP) ||
wparam == (IntPtr)Msg.WM_NCLBUTTONUP)
{
WindowsAPI.SetFocus(IntPtr.Zero);
}
return(WindowsAPI.CallNextHookEx(mouseHookHandle, code, wparam, lparam));
}
private static int LowLevelHookProc(int code, IntPtr wParam, IntPtr lParam) // lParam is KBDLLHookStruct and wParam is a keyState
{
if (code >= 0)
{
var kb = KBDLLHookStruct.CreateStruct(lParam);
var keyState = (KeyState)wParam;
var key = (Key)kb.vkCode;
if (keyState == KeyState.KeyDown || keyState == KeyState.SysKeyDown)
{
OnKeyDown(key);
}
else
{
OnKeyUp(key);
}
}
return(WindowsAPI.CallNextHookEx(hookId, code, wParam, lParam));
}