How to Hook only a KeyboardFocus on Windows API - c++

Question

I'm searching on msdn for a Hook handler about Keyboard Focus, but didn't found.
I would like the handler for the element on focus by keyboard.
Example:
When we are on Desktop and press any key that is a first letter of a program, these program is selected.
When we press the TAB key for navigation links, these element is selected.
I saw the CBTProc for hook a keyboard events, but is not helpful, because we can select the item by click of mouse.
So, I would like the handler about focus of mouse or keyboard, the element name.

Answer 1

I had success with this code.
// Global variable.
HWINEVENTHOOK g_hook;
//
// Callback function that handles events.
//
void CALLBACK HandleWinEvent(HWINEVENTHOOK hook, DWORD event, HWND hwnd,
LONG idObject, LONG idChild,
DWORD dwEventThread, DWORD dwmsEventTime)
{
std::cout << "Inside CB" << std::endl;
}
// Initializes COM and sets up the event hook.
void InitializeMSAA()
{
CoInitialize(NULL);
g_hook = SetWinEventHook(
EVENT_OBJECT_FOCUS, EVENT_OBJECT_FOCUS, // Range of events (4 to 5).
NULL, // Handle to DLL.
HandleWinEvent, // The callback.
0, 0, // Process and thread IDs of interest (0 = all)
WINEVENT_OUTOFCONTEXT | WINEVENT_SKIPOWNPROCESS); // Flags.
}
// Unhooks the event and shuts down COM.
//
void ShutdownMSAA()
{
UnhookWinEvent(g_hook);
CoUninitialize();
}
int main()
{
InitializeMSAA();
MSG msg;
while (GetMessage(&msg, NULL, 0, 0) > 0)
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return 0;
}
Thanks all for yours reply