dlls/wintab32/wintab32.c

   1 /*
   2  * WinTab32 library
   3  *
   4  * Copyright 2003 CodeWeavers, Aric Stewart
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "wingdi.h"
  26 #include "winuser.h"
  27 #include "winerror.h"
  28 #include "wintab.h"
  29 #include "wintab_internal.h"
  30 #include "wine/debug.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(wintab32);
  33
  34 HWND hwndDefault = NULL;
  35 static const WCHAR
  36   WC_TABLETCLASSNAME[] = {'W','i','n','e','T','a','b','l','e','t','C','l','a','s','s',0};
  37 CRITICAL_SECTION csTablet;
  38
  39 int (*pLoadTabletInfo)(HWND hwnddefault) = NULL;
  40 int (*pGetCurrentPacket)(LPWTPACKET packet) = NULL;
  41 int (*pAttachEventQueueToTablet)(HWND hOwner) = NULL;
  42 UINT (*pWTInfoA)(UINT wCategory, UINT nIndex, LPVOID lpOutput) = NULL;
  43
  44 static LRESULT WINAPI TABLET_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam,
  45                                           LPARAM lParam);
  46
  47 static VOID TABLET_Register(void)
  48 {
  49     WNDCLASSW wndClass;
  50     ZeroMemory(&wndClass, sizeof(WNDCLASSW));
  51     wndClass.style = CS_GLOBALCLASS;
  52     wndClass.lpfnWndProc = TABLET_WindowProc;
  53     wndClass.cbClsExtra = 0;
  54     wndClass.cbWndExtra = 0;
  55     wndClass.hCursor = NULL;
  56     wndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW +1);
  57     wndClass.lpszClassName = WC_TABLETCLASSNAME;
  58     RegisterClassW(&wndClass);
  59 }
  60
  61 static VOID TABLET_Unregister(void)
  62 {
  63     UnregisterClassW(WC_TABLETCLASSNAME, NULL);
  64 }
  65
  66 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpReserved)
  67 {
  68     static const WCHAR name[] = {'T','a','b','l','e','t',0};
  69     HMODULE hx11drv;
  70
  71     TRACE("%p, %x, %p\n",hInstDLL,fdwReason,lpReserved);
  72     switch (fdwReason)
  73     {
  74         case DLL_PROCESS_ATTACH:
  75             TRACE("Initialization\n");
  76             InitializeCriticalSection(&csTablet);
  77             csTablet.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": csTablet");
  78             hx11drv = GetModuleHandleA("winex11.drv");
  79             if (hx11drv)
  80             {
  81                 pLoadTabletInfo = (void *)GetProcAddress(hx11drv, "LoadTabletInfo");
  82                 pAttachEventQueueToTablet = (void *)GetProcAddress(hx11drv, "AttachEventQueueToTablet");
  83                 pGetCurrentPacket = (void *)GetProcAddress(hx11drv, "GetCurrentPacket");
  84                 pWTInfoA = (void *)GetProcAddress(hx11drv, "WTInfoA");
  85                 TABLET_Register();
  86                 hwndDefault = CreateWindowW(WC_TABLETCLASSNAME, name,
  87                                 WS_POPUPWINDOW,0,0,0,0,0,0,hInstDLL,0);
  88             }
  89             else
  90                 return FALSE;
  91             break;
  92         case DLL_PROCESS_DETACH:
  93             TRACE("Detaching\n");
  94             if (hwndDefault)
  95             {
  96                 DestroyWindow(hwndDefault);
  97                 hwndDefault = 0;
  98             }
  99             TABLET_Unregister();
 100             csTablet.DebugInfo->Spare[0] = 0;
 101             DeleteCriticalSection(&csTablet);
 102             break;
 103     }
 104     return TRUE;
 105 }
 106
 107
 108 /*
 109  * The window proc for the default TABLET window
 110  */
 111 static LRESULT WINAPI TABLET_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam,
 112                                           LPARAM lParam)
 113 {
 114     TRACE("Incoming Message 0x%x  (0x%08x, 0x%08x)\n", uMsg, (UINT)wParam,
 115            (UINT)lParam);
 116
 117     switch(uMsg)
 118     {
 119         case WM_NCCREATE:
 120             return TRUE;
 121
 122         case WT_PACKET:
 123             {
 124                 WTPACKET packet;
 125                 LPOPENCONTEXT handler;
 126                 pGetCurrentPacket(&packet);
 127                 handler = AddPacketToContextQueue(&packet,(HWND)lParam);
 128                 if (handler && handler->context.lcOptions & CXO_MESSAGES)
 129                     TABLET_PostTabletMessage(handler, _WT_PACKET(handler->context.lcMsgBase),
 130                                 (WPARAM)packet.pkSerialNumber,
 131                                 (LPARAM)handler->handle, FALSE);
 132                 break;
 133             }
 134         case WT_PROXIMITY:
 135             {
 136                 WTPACKET packet;
 137                 LPOPENCONTEXT handler;
 138                 LPARAM prox;
 139                 pGetCurrentPacket(&packet);
 140                 handler = AddPacketToContextQueue(&packet,(HWND)lParam);
 141                 if (handler)
 142                 {
 143                     prox = MAKELPARAM( wParam, 1 );
 144                     TABLET_PostTabletMessage(handler, WT_PROXIMITY,
 145                                         (WPARAM)handler->handle, (LPARAM)prox,
 146                                         TRUE);
 147                 }
 148                 break;
 149             }
 150     }
 151     return 0;
 152 }