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dinput: Create/destroy hook thread from DirectInput.

This commit is contained in:
Vitaliy Margolen 2006-09-13 00:06:15 -06:00 committed by Alexandre Julliard
parent 61c1dd2b32
commit ad045d6e81
1 changed files with 53 additions and 25 deletions
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78
dlls/dinput/dinput_main.c
View File

@ -76,6 +76,8 @@ BOOL WINAPI DllMain( HINSTANCE inst, DWORD reason, LPVOID reserv)
return TRUE;
}
static BOOL create_hook_thread(void);
static void release_hook_thread(void);
/******************************************************************************
* DirectInputCreateEx (DINPUT.@)
@ -118,6 +120,7 @@ HRESULT WINAPI DirectInputCreateEx(
res = DI_OK;
}
if (res == DI_OK && !create_hook_thread()) res = DIERR_GENERIC;
if (res == DI_OK)
{
This = HeapAlloc(GetProcessHeap(), 0, sizeof(IDirectInputImpl));
@ -255,7 +258,10 @@ static ULONG WINAPI IDirectInputAImpl_Release(LPDIRECTINPUT7A iface)
ULONG ref;
ref = InterlockedDecrement(&(This->ref));
if (ref == 0)
HeapFree(GetProcessHeap(),0,This);
{
HeapFree(GetProcessHeap(), 0, This);
release_hook_thread();
}
return ref;
}
@ -732,15 +738,21 @@ static LRESULT CALLBACK dinput_hook_WndProc(HWND hWnd, UINT message, WPARAM wPar
return res;
}
}
else if (!wParam && !lParam)
DestroyWindow(hWnd);
return 0;
case WM_DESTROY:
if (kbd_hook) UnhookWindowsHookEx(kbd_hook);
if (mouse_hook) UnhookWindowsHookEx(mouse_hook);
PostQuitMessage(0);
}
return DefWindowProcW(hWnd, message, wParam, lParam);
}
static HANDLE signal_event;
static HWND hook_thread_hwnd;
static LONG hook_thread_refcount;
static DWORD WINAPI hook_thread_proc(void *param)
{
@ -757,9 +769,9 @@ static DWORD WINAPI hook_thread_proc(void *param)
if (!RegisterClassExW(&wcex)) ERR("Error registering window class\n");
hwnd = CreateWindowExW(0, classW, NULL, 0, 0, 0, 0, 0, HWND_MESSAGE, NULL, NULL, 0);
*(HWND*)param = hwnd;
hook_thread_hwnd = hwnd;
SetEvent(signal_event);
SetEvent(*(LPHANDLE)param);
if (hwnd)
{
while (GetMessageW(&msg, 0, 0, 0))
@ -767,10 +779,10 @@ static DWORD WINAPI hook_thread_proc(void *param)
TranslateMessage(&msg);
DispatchMessageW(&msg);
}
DestroyWindow(hwnd);
}
else ERR("Error creating message window\n");
DestroyWindow(hwnd);
UnregisterClassW(wcex.lpszClassName, wcex.hInstance);
return 0;
}
@ -784,41 +796,57 @@ static CRITICAL_SECTION_DEBUG dinput_critsect_debug =
};
static CRITICAL_SECTION dinput_hook_crit = { &dinput_critsect_debug, -1, 0, 0, 0, 0 };
static HWND get_thread_hwnd(void)
static BOOL create_hook_thread(void)
{
static HANDLE hook_thread;
static HWND hook_thread_hwnd;
LONG ref;
EnterCriticalSection(&dinput_hook_crit);
if (!hook_thread)
ref = ++hook_thread_refcount;
TRACE("Refcount %ld\n", ref);
if (ref == 1)
{
DWORD tid;
HWND hwnd;
HANDLE thread, event;
signal_event = CreateEventW(NULL, FALSE, FALSE, NULL);
hook_thread = CreateThread(NULL, 0, hook_thread_proc, &hwnd, 0, &tid);
if (signal_event && hook_thread)
event = CreateEventW(NULL, FALSE, FALSE, NULL);
thread = CreateThread(NULL, 0, hook_thread_proc, &event, 0, &tid);
if (event && thread)
{
HANDLE handles[2];
handles[0] = signal_event;
handles[1] = hook_thread;
handles[0] = event;
handles[1] = thread;
WaitForMultipleObjects(2, handles, FALSE, INFINITE);
}
CloseHandle(signal_event);
if (!(hook_thread_hwnd = hwnd))
{
/* Thread failed to create window - reset things so we could try again later */
CloseHandle(hook_thread);
hook_thread = 0;
}
CloseHandle(event);
CloseHandle(thread);
}
LeaveCriticalSection(&dinput_hook_crit);
return hook_thread_hwnd;
return hook_thread_hwnd != 0;
}
static void release_hook_thread(void)
{
LONG ref;
EnterCriticalSection(&dinput_hook_crit);
ref = --hook_thread_refcount;
TRACE("Releasing to %ld\n", ref);
if (ref == 0)
{
HWND hwnd = hook_thread_hwnd;
hook_thread_hwnd = 0;
SendMessageW(hwnd, WM_USER+0x10, 0, 0);
}
LeaveCriticalSection(&dinput_hook_crit);
}
HHOOK set_dinput_hook(int hook_id, LPVOID proc)
{
return (HHOOK)SendMessageW(get_thread_hwnd(), WM_USER+0x10, (WPARAM)hook_id, (LPARAM)proc);
HWND hwnd;
EnterCriticalSection(&dinput_hook_crit);
hwnd = hook_thread_hwnd;
LeaveCriticalSection(&dinput_hook_crit);
return (HHOOK)SendMessageW(hwnd, WM_USER+0x10, (WPARAM)hook_id, (LPARAM)proc);
}