reactos/lib/user32/misc/dllmain.c

   1 #include <windows.h>
   2 #include <debug.h>
   3 #include <user32/callback.h>
   4
   5 #ifdef DBG
   6
   7 /* See debug.h for debug/trace constants */
   8 DWORD DebugTraceLevel = MIN_TRACE;
   9
  10 #endif /* DBG */
  11
  12 /* To make the linker happy */
  13 VOID STDCALL KeBugCheck (ULONG  BugCheckCode) {}
  14
  15 HANDLE ProcessHeap;
  16 HWINSTA ProcessWindowStation;
  17
  18 PVOID
  19 User32AllocHeap(ULONG Size)
  20 {
  21   return(RtlAllocateHeap(ProcessHeap, HEAP_ZERO_MEMORY, Size));
  22 }
  23
  24 VOID
  25 User32FreeHeap(PVOID Block)
  26 {
  27   RtlFreeHeap(ProcessHeap, 0, Block);
  28 }
  29
  30 PWSTR
  31 User32ConvertString(PCSTR String)
  32 {
  33   ANSI_STRING InString;
  34   UNICODE_STRING OutString;
  35  RtlInitAnsiString(&InString, String);
  36   RtlAnsiStringToUnicodeString(&OutString, &InString, TRUE);
  37   return(OutString.Buffer);
  38 }
  39
  40 VOID
  41 User32FreeString(PWSTR String)
  42 {
  43   RtlFreeHeap(RtlGetProcessHeap(), 0, String);
  44 }
  45
  46 DWORD
  47 Init(VOID)
  48 {
  49   DWORD Status;
  50
  51   ProcessHeap = RtlGetProcessHeap();
  52
  53   /* Set up the kernel callbacks. */
  54   NtCurrentPeb()->KernelCallbackTable[USER32_CALLBACK_WINDOWPROC] =
  55     (PVOID)User32CallWindowProcFromKernel;
  56   NtCurrentPeb()->KernelCallbackTable[USER32_CALLBACK_SENDASYNCPROC] =
  57     (PVOID)User32CallSendAsyncProcForKernel;
  58   NtCurrentPeb()->KernelCallbackTable[USER32_CALLBACK_SENDNCCREATE] =
  59     (PVOID)User32SendNCCREATEMessageForKernel;
  60   NtCurrentPeb()->KernelCallbackTable[USER32_CALLBACK_SENDCREATE] =
  61     (PVOID)User32SendCREATEMessageForKernel;
  62   NtCurrentPeb()->KernelCallbackTable[USER32_CALLBACK_SENDGETMINMAXINFO] =
  63     (PVOID)User32SendGETMINMAXINFOMessageForKernel;
  64
  65   GdiDllInitialize(NULL, DLL_PROCESS_ATTACH, NULL);
  66
  67   return(Status);
  68 }
  69
  70 DWORD
  71 Cleanup(VOID)
  72 {
  73   DWORD Status;
  74
  75   GdiDllInitialize(NULL, DLL_PROCESS_DETACH, NULL);
  76
  77   return(Status);
  78 }
  79
  80 INT STDCALL
  81 DllMain(PVOID   hinstDll,
  82         ULONG   dwReason,
  83         PVOID   reserved)
  84 {
  85   D(MAX_TRACE, ("hinstDll (0x%X)  dwReason (0x%X)\n", hinstDll, dwReason));
  86
  87   switch (dwReason)
  88     {
  89     case DLL_PROCESS_ATTACH:
  90       Init();
  91       break;
  92     case DLL_THREAD_ATTACH:
  93       break;
  94     case DLL_THREAD_DETACH:
  95       break;
  96     case DLL_PROCESS_DETACH:
  97       Cleanup();
  98       break;
  99     }
 100   return(1);
 101 }
 102