reactos/lib/user32/misc/dllmain.c

   1 #include <user32.h>
   2
   3 /* FIXME: Belongs to some header. */
   4 WINBOOL STDCALL GdiDllInitialize(HANDLE, DWORD, LPVOID);
   5 void InitStockObjects(void);
   6 VOID DeleteFrameBrushes(VOID);
   7
   8 #ifdef DBG
   9
  10 /* See debug.h for debug/trace constants */
  11 DWORD DebugTraceLevel = MIN_TRACE;
  12
  13 #endif /* DBG */
  14
  15 extern CRITICAL_SECTION gcsMPH;
  16 static ULONG User32TlsIndex;
  17 HINSTANCE User32Instance;
  18 HWINSTA ProcessWindowStation;
  19
  20 PUSER32_THREAD_DATA
  21 User32GetThreadData()
  22 {
  23   return((PUSER32_THREAD_DATA)TlsGetValue(User32TlsIndex));
  24 }
  25
  26 VOID
  27 InitThread(VOID)
  28 {
  29   PUSER32_THREAD_DATA ThreadData;
  30
  31   ThreadData = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
  32                          sizeof(USER32_THREAD_DATA));
  33   TlsSetValue(User32TlsIndex, ThreadData);
  34 }
  35
  36 VOID
  37 CleanupThread(VOID)
  38 {
  39   PUSER32_THREAD_DATA ThreadData;
  40
  41   ThreadData = (PUSER32_THREAD_DATA)TlsGetValue(User32TlsIndex);
  42   HeapFree(GetProcessHeap(), HEAP_ZERO_MEMORY, ThreadData);
  43   TlsSetValue(User32TlsIndex, 0);
  44 }
  45
  46 VOID
  47 Init(VOID)
  48 {
  49   /* Set up the kernel callbacks. */
  50   NtCurrentTeb()->ProcessEnvironmentBlock->KernelCallbackTable[USER32_CALLBACK_WINDOWPROC] =
  51     (PVOID)User32CallWindowProcFromKernel;
  52   NtCurrentTeb()->ProcessEnvironmentBlock->KernelCallbackTable[USER32_CALLBACK_SENDASYNCPROC] =
  53     (PVOID)User32CallSendAsyncProcForKernel;
  54   NtCurrentTeb()->ProcessEnvironmentBlock->KernelCallbackTable[USER32_CALLBACK_LOADSYSMENUTEMPLATE] =
  55     (PVOID)User32LoadSysMenuTemplateForKernel;
  56   NtCurrentTeb()->ProcessEnvironmentBlock->KernelCallbackTable[USER32_CALLBACK_LOADDEFAULTCURSORS] =
  57     (PVOID)User32SetupDefaultCursors;
  58   NtCurrentTeb()->ProcessEnvironmentBlock->KernelCallbackTable[USER32_CALLBACK_HOOKPROC] =
  59     (PVOID)User32CallHookProcFromKernel;
  60
  61   /* Allocate an index for user32 thread local data. */
  62   User32TlsIndex = TlsAlloc();
  63
  64   MenuInit();
  65   MessageInit();
  66
  67   InitializeCriticalSection(&U32AccelCacheLock);
  68   InitializeCriticalSection(&gcsMPH);
  69
  70   GdiDllInitialize(NULL, DLL_PROCESS_ATTACH, NULL);
  71   InitStockObjects();
  72 }
  73
  74 VOID
  75 Cleanup(VOID)
  76 {
  77   GdiDllInitialize(NULL, DLL_PROCESS_DETACH, NULL);
  78
  79   TlsFree(User32TlsIndex);
  80 }
  81
  82
  83
  84 INT STDCALL
  85 DllMain(
  86         PVOID  hinstDll,
  87         ULONG  dwReason,
  88         PVOID  reserved
  89         )
  90 {
  91   switch (dwReason)
  92     {
  93     case DLL_PROCESS_ATTACH:
  94       User32Instance = hinstDll;
  95       hProcessHeap = RtlGetProcessHeap();
  96       Init();
  97       InitThread();
  98       break;
  99     case DLL_THREAD_ATTACH:
 100       InitThread();
 101       break;
 102     case DLL_THREAD_DETACH:
 103       CleanupThread();
 104       break;
 105     case DLL_PROCESS_DETACH:
 106       DeleteFrameBrushes();
 107       CleanupThread();
 108       Cleanup();
 109       break;
 110     }
 111   return(1);
 112 }