private void cbtHook_Callback(int nCode, IntPtr wParam, IntPtr lParam, ref bool handled)
{
switch ((HCBT)nCode)
{
case HCBT.SetFocus:
// wParam
// Определяет дескриптор окна, получающего фокус клавиатуры.
// lParam
// Определяет дескриптор окна, теряющего фокус клавиатуры.
//e.HWndGaining = (IntPtr)wParam;
//e.HWndLosing = lParam;
if (SetFocusCallback != null)
{
SetFocusCallback.Invoke(wParam, lParam, ref handled);
}
break;
case HCBT.Activate:
// wParam
// Определяет дескриптор окна, которое будет активировано
// lParam
// Specifies a long pointer to a CBTACTIVATESTRUCT structure containing the handle
// to the active window and specifies whether the activation is changing because of a mouse click.
if (ActivateCallback != null)
{
CBTActivateStruct cbtActivateStruct =
(CBTActivateStruct)Marshal.PtrToStructure(lParam, typeof(CBTActivateStruct));
ActivateCallback.Invoke(wParam, cbtActivateStruct.fMouse, ref handled);
}
break;
case HCBT.SysCommand:
// wParam
// Определяет значение системной команды (SC_)
// lParam
// low-order = X
// high-order = Y | This parameter is –1 if the command is chosen using a system accelerator, or zero if using a mnemonic.
switch ((SysCommands)wParam)
{
case SysCommands.SC_TASKLIST:
//e.Location = new System.Drawing.Point((int)lParam & 0xFFFF, (int)lParam >> 16);
if (TaskListCallback != null)
{
TaskListCallback.Invoke((int)lParam, ref handled);
}
break;
}
break;
}
}
public static IntPtr CBTHookProcFn(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode < 0)
{
return(CallNextHookEx(hHook, nCode, wParam, lParam));
}
else if (nCode == HCBT_ACTIVATE)
{
//Marshall the data from the callback.
CBTActivateStruct cbtActivateStruct = (CBTActivateStruct)Marshal.PtrToStructure(lParam, typeof(CBTActivateStruct));
m_Debug.DebugPrint(String.Format("hWnd = {0}", cbtActivateStruct.hWndActive));
}
else if (nCode == 9) //HCBT_SETFOCUS)
{
m_Debug.DebugPrint(String.Format("hWndFocus = {0}, hWndLose = {1}", wParam.ToInt32(), lParam.ToInt32()));
}
else
{
return(CallNextHookEx(hHook, nCode, wParam, lParam));
}
return(CallNextHookEx(hHook, nCode, wParam, lParam));
}