]> de.git.xonotic.org Git - xonotic/netradiant.git/blobdiff - libs/multimon.h
merge branch work back into trunk
[xonotic/netradiant.git] / libs / multimon.h
index 9a4e9ad70440e8e9a956f51608a0a5fffdd76d70..85e7654c99f16566a07f3e9a0458c32fb350cb70 100644 (file)
-#ifndef __MULTIMON_H\r
-#define __MULTIMON_H\r
-\r
-#ifdef _WIN32\r
-\r
-//=============================================================================\r
-//\r
-// MULTIMON\r
-// stub module that "stubs" multiple monitor APIs on pre-Memphis Win32 OSes\r
-//\r
-// By using this header your code will work unchanged on Win95,\r
-// you will get back correct values from GetSystemMetrics() for new metrics\r
-// and the new APIs will act like only one display is present.\r
-//\r
-// exactly one source must include this with COMPILE_MULTIMON_STUBS defined\r
-//\r
-//=============================================================================\r
-\r
-#ifdef __cplusplus\r
-extern "C" {            /* Assume C declarations for C++ */\r
-#endif  /* __cplusplus */\r
-\r
-//\r
-// if we are building on Win95/NT4 headers we need to declare this stuff ourselves\r
-//\r
-#ifndef SM_CMONITORS\r
-\r
-#define SM_XVIRTUALSCREEN                   76\r
-#define SM_YVIRTUALSCREEN                   77\r
-#define SM_CXVIRTUALSCREEN                  78\r
-#define SM_CYVIRTUALSCREEN                  79\r
-#define SM_CMONITORS                        80\r
-#define SM_SAMEDISPLAYFORMAT                81\r
-\r
-DECLARE_HANDLE(HMONITOR);\r
-\r
-#define MONITOR_DEFAULTTONULL               0x00000000\r
-#define MONITOR_DEFAULTTOPRIMARY            0x00000001\r
-#define MONITOR_DEFAULTTONEAREST            0x00000002\r
-\r
-#define MONITORINFOF_PRIMARY                0x00000001\r
-\r
-typedef struct tagMONITORINFO\r
-{\r
-  DWORD cbSize;\r
-  RECT  rcMonitor;\r
-  RECT  rcWork;\r
-  DWORD dwFlags;\r
-} MONITORINFO, *LPMONITORINFO;\r
-\r
-#define CCHDEVICENAME 32\r
-\r
-#ifdef __cplusplus\r
-typedef struct tagMONITORINFOEX : public tagMONITORINFO\r
-{\r
-  TCHAR       szDevice[CCHDEVICENAME];\r
-} MONITORINFOEX, *LPMONITORINFOEX;\r
-#else\r
-typedef struct\r
-{\r
-  MONITORINFO;\r
-  TCHAR       szDevice[CCHDEVICENAME];\r
-} MONITORINFOEX, *LPMONITORINFOEX;\r
-#endif\r
-\r
-typedef BOOL (CALLBACK* MONITORENUMPROC)(HMONITOR, HDC, LPRECT, LPARAM);\r
-\r
-#endif // SM_CMONITORS\r
-\r
-#ifndef DISPLAY_DEVICE_ATTACHED_TO_DESKTOP\r
-\r
-typedef struct {\r
-  DWORD cb;\r
-  CHAR  DeviceName[32];\r
-  CHAR  DeviceString[128];\r
-  DWORD StateFlags;\r
-} DISPLAY_DEVICE;\r
-\r
-#define DISPLAY_DEVICE_ATTACHED_TO_DESKTOP  0x00000001\r
-#define DISPLAY_DEVICE_MULTI_DRIVER         0x00000002\r
-#define DISPLAY_DEVICE_PRIMARY_DEVICE       0x00000004\r
-#define DISPLAY_DEVICE_MIRRORING_DRIVER     0x00000008\r
-\r
-#endif\r
-#define DISPLAY_DEVICE_VGA                  0x00000010\r
-\r
-#ifndef ENUM_CURRENT_SETTINGS\r
-#define ENUM_CURRENT_SETTINGS               ((DWORD)-1)\r
-#define ENUM_REGISTRY_SETTINGS              ((DWORD)-2)\r
-#endif\r
-\r
-#undef GetMonitorInfo\r
-#undef GetSystemMetrics\r
-#undef MonitorFromWindow\r
-#undef MonitorFromRect\r
-#undef MonitorFromPoint\r
-#undef EnumDisplayMonitors\r
-#undef EnumDisplayDevices\r
-\r
-//\r
-// define this to compile the stubs\r
-// otherwise you get the declarations\r
-//\r
-#ifdef COMPILE_MULTIMON_STUBS\r
-\r
-  //---------------------------------------------------------------------------\r
-  //\r
-  // Implement the API stubs.\r
-  //\r
-  //---------------------------------------------------------------------------\r
-\r
-  int       (WINAPI* g_pfnGetSystemMetrics)(int);\r
-  HMONITOR  (WINAPI* g_pfnMonitorFromWindow)(HWND, BOOL);\r
-  HMONITOR  (WINAPI* g_pfnMonitorFromRect)(LPCRECT, BOOL);\r
-  HMONITOR  (WINAPI* g_pfnMonitorFromPoint)(POINT, BOOL);\r
-  BOOL      (WINAPI* g_pfnGetMonitorInfo)(HMONITOR, LPMONITORINFO);\r
-  BOOL      (WINAPI* g_pfnEnumDisplayMonitors)(HDC, LPCRECT, MONITORENUMPROC, LPARAM);\r
-  BOOL      (WINAPI *g_pfnEnumDisplayDevices)(LPVOID, int, DISPLAY_DEVICE *, DWORD);\r
-\r
-  BOOL InitMultipleMonitorStubs(void)\r
-  {\r
-    HMODULE hUser32;\r
-    static BOOL fInitDone;\r
-\r
-    if (fInitDone)\r
-    {\r
-      return g_pfnGetMonitorInfo != NULL;\r
-    }\r
-\r
-    if ((hUser32 = GetModuleHandle(TEXT("USER32"))) &&\r
-        (*(FARPROC*)&g_pfnGetSystemMetrics    = GetProcAddress(hUser32,"GetSystemMetrics")) &&\r
-        (*(FARPROC*)&g_pfnMonitorFromWindow   = GetProcAddress(hUser32,"MonitorFromWindow")) &&\r
-        (*(FARPROC*)&g_pfnMonitorFromRect     = GetProcAddress(hUser32,"MonitorFromRect")) &&\r
-        (*(FARPROC*)&g_pfnMonitorFromPoint    = GetProcAddress(hUser32,"MonitorFromPoint")) &&\r
-        (*(FARPROC*)&g_pfnEnumDisplayMonitors = GetProcAddress(hUser32,"EnumDisplayMonitors")) &&\r
-    #ifdef UNICODE\r
-        (*(FARPROC*)&g_pfnGetMonitorInfo      = GetProcAddress(hUser32,"GetMonitorInfoW")) &&\r
-        (*(FARPROC*)&g_pfnEnumDisplayDevices  = GetProcAddress(hUser32,"EnumDisplayDevicesW")) &&\r
-    #else\r
-        (*(FARPROC*)&g_pfnGetMonitorInfo      = GetProcAddress(hUser32,"GetMonitorInfoA")) &&\r
-        (*(FARPROC*)&g_pfnEnumDisplayDevices  = GetProcAddress(hUser32,"EnumDisplayDevicesA")) &&\r
-    #endif\r
-        (GetSystemMetrics(SM_CXVIRTUALSCREEN) >= GetSystemMetrics(SM_CXSCREEN)) &&\r
-        (GetSystemMetrics(SM_CYVIRTUALSCREEN) >= GetSystemMetrics(SM_CYSCREEN)) )\r
-    {\r
-      fInitDone = TRUE;\r
-      return TRUE;\r
-    }\r
-    else\r
-    {\r
-      g_pfnGetSystemMetrics    = NULL;\r
-      g_pfnMonitorFromWindow   = NULL;\r
-      g_pfnMonitorFromRect     = NULL;\r
-      g_pfnMonitorFromPoint    = NULL;\r
-      g_pfnGetMonitorInfo      = NULL;\r
-      g_pfnEnumDisplayMonitors = NULL;\r
-      g_pfnEnumDisplayDevices  = NULL;\r
-\r
-      fInitDone = TRUE;\r
-      return FALSE;\r
-    }\r
-  }\r
-\r
-  //---------------------------------------------------------------------------\r
-  //\r
-  // "stubbed" implementations of Monitor APIs that work with the primary          //  display\r
-  //\r
-  //---------------------------------------------------------------------------\r
-\r
-  int WINAPI\r
-  xGetSystemMetrics(int nIndex)\r
-  {\r
-    if (InitMultipleMonitorStubs())\r
-      return g_pfnGetSystemMetrics(nIndex);\r
-\r
-    switch (nIndex)\r
-    {\r
-    case SM_CMONITORS:\r
-    case SM_SAMEDISPLAYFORMAT:\r
-      return 1;\r
-\r
-    case SM_XVIRTUALSCREEN:\r
-    case SM_YVIRTUALSCREEN:\r
-      return 0;\r
-\r
-    case SM_CXVIRTUALSCREEN:\r
-      nIndex = SM_CXSCREEN;\r
-      break;\r
-\r
-    case SM_CYVIRTUALSCREEN:\r
-      nIndex = SM_CYSCREEN;\r
-      break;\r
-    }\r
-\r
-    return GetSystemMetrics(nIndex);\r
-  }\r
-\r
-  #define xPRIMARY_MONITOR ((HMONITOR)0x42)\r
-\r
-  HMONITOR WINAPI\r
-  xMonitorFromRect(LPCRECT lprcScreenCoords,\r
-                   UINT uFlags)\r
-  {\r
-    if (InitMultipleMonitorStubs())\r
-      return g_pfnMonitorFromRect(lprcScreenCoords, uFlags);\r
-\r
-    if ((uFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||\r
-        ((lprcScreenCoords->right > 0) &&\r
-        (lprcScreenCoords->bottom > 0) &&\r
-        (lprcScreenCoords->left < GetSystemMetrics(SM_CXSCREEN)) &&\r
-        (lprcScreenCoords->top < GetSystemMetrics(SM_CYSCREEN))))\r
-    {\r
-      return xPRIMARY_MONITOR;\r
-    }\r
-\r
-    return NULL;\r
-  }\r
-\r
-  HMONITOR WINAPI\r
-  xMonitorFromWindow(HWND hWnd,\r
-                     UINT uFlags)\r
-  {\r
-    RECT rc;\r
-\r
-    if (InitMultipleMonitorStubs())\r
-      return g_pfnMonitorFromWindow(hWnd, uFlags);\r
-\r
-    if (uFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST))\r
-      return xPRIMARY_MONITOR;\r
-\r
-    if (GetWindowRect(hWnd, &rc))\r
-      return xMonitorFromRect(&rc, uFlags);\r
-\r
-    return NULL;\r
-  }\r
-\r
-  HMONITOR WINAPI\r
-  xMonitorFromPoint(POINT ptScreenCoords,\r
-                    UINT uFlags)\r
-  {\r
-    if (InitMultipleMonitorStubs())\r
-      return g_pfnMonitorFromPoint(ptScreenCoords, uFlags);\r
-\r
-    if ((uFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||\r
-        ((ptScreenCoords.x >= 0) &&\r
-        (ptScreenCoords.x < GetSystemMetrics(SM_CXSCREEN)) &&\r
-        (ptScreenCoords.y >= 0) &&\r
-        (ptScreenCoords.y < GetSystemMetrics(SM_CYSCREEN))))\r
-    {\r
-      return xPRIMARY_MONITOR;\r
-    }\r
-\r
-    return NULL;\r
-  }\r
-\r
-  BOOL WINAPI\r
-  xGetMonitorInfo(HMONITOR hMonitor,\r
-                  LPMONITORINFO lpMonitorInfo)\r
-  {\r
-    RECT rcWork;\r
-\r
-    if (InitMultipleMonitorStubs())\r
-      return g_pfnGetMonitorInfo(hMonitor, lpMonitorInfo);\r
-\r
-    if ((hMonitor == xPRIMARY_MONITOR) && lpMonitorInfo &&\r
-        (lpMonitorInfo->cbSize >= sizeof(MONITORINFO)) &&\r
-        SystemParametersInfo(SPI_GETWORKAREA, 0, &rcWork, 0))\r
-    {\r
-      lpMonitorInfo->rcMonitor.left = 0;\r
-      lpMonitorInfo->rcMonitor.top  = 0;\r
-      lpMonitorInfo->rcMonitor.right  = GetSystemMetrics(SM_CXSCREEN);\r
-      lpMonitorInfo->rcMonitor.bottom = GetSystemMetrics(SM_CYSCREEN);\r
-      lpMonitorInfo->rcWork = rcWork;\r
-      lpMonitorInfo->dwFlags = MONITORINFOF_PRIMARY;\r
-\r
-      if (lpMonitorInfo->cbSize >= sizeof(MONITORINFOEX))\r
-          lstrcpy(((MONITORINFOEX*)lpMonitorInfo)->szDevice,\r
-          TEXT("DISPLAY"));\r
-\r
-      return TRUE;\r
-    }\r
-\r
-    return FALSE;\r
-  }\r
-\r
-  BOOL WINAPI\r
-  xEnumDisplayMonitors(HDC hdc,\r
-                       LPCRECT lprcIntersect, \r
-                       MONITORENUMPROC lpfnEnumProc,\r
-                       LPARAM lData)\r
-  {\r
-    RECT rcCallback, rcLimit;\r
-\r
-    if (InitMultipleMonitorStubs())\r
-      return g_pfnEnumDisplayMonitors(hdc, lprcIntersect, lpfnEnumProc, lData);\r
-    \r
-    if (!lpfnEnumProc)\r
-      return FALSE;\r
-\r
-    rcLimit.left   = 0;\r
-    rcLimit.top    = 0;\r
-    rcLimit.right  = GetSystemMetrics(SM_CXSCREEN);\r
-    rcLimit.bottom = GetSystemMetrics(SM_CYSCREEN);\r
-\r
-    if (hdc)\r
-    {\r
-      RECT rcClip;\r
-      HWND hWnd;\r
-\r
-      if ((hWnd = WindowFromDC(hdc)) == NULL)\r
-        return FALSE;\r
-\r
-      switch (GetClipBox(hdc, &rcClip))\r
-      {\r
-      default:\r
-        MapWindowPoints(NULL, hWnd, (LPPOINT)&rcLimit, 2);\r
-        if (IntersectRect(&rcCallback, &rcClip, &rcLimit))\r
-          break;\r
-      //fall thru\r
-      case NULLREGION:\r
-        return TRUE;\r
-      case ERROR:\r
-        return FALSE;\r
-      }\r
-\r
-      rcLimit = rcCallback;\r
-    }\r
-\r
-    if (!lprcIntersect || IntersectRect(&rcCallback, lprcIntersect, &rcLimit))\r
-    {\r
-      lpfnEnumProc(xPRIMARY_MONITOR, hdc, &rcCallback, lData);\r
-    }\r
-\r
-    return TRUE;\r
-  }\r
-\r
-  BOOL WINAPI\r
-  xEnumDisplayDevices(LPVOID lpReserved,\r
-                      int iDeviceNum, \r
-                      DISPLAY_DEVICE * pDisplayDevice,\r
-                      DWORD dwFlags)\r
-  {\r
-    if (InitMultipleMonitorStubs())\r
-      return g_pfnEnumDisplayDevices(lpReserved, iDeviceNum, pDisplayDevice, dwFlags);\r
-    \r
-    return FALSE;\r
-  }\r
-\r
-  #undef xPRIMARY_MONITOR\r
-  #undef COMPILE_MULTIMON_STUBS\r
-\r
-#else    // COMPILE_MULTIMON_STUBS\r
-\r
-  extern int      WINAPI xGetSystemMetrics(int);\r
-  extern HMONITOR WINAPI xMonitorFromWindow(HWND, UINT);\r
-  extern HMONITOR WINAPI xMonitorFromRect(LPCRECT, UINT);\r
-  extern HMONITOR WINAPI xMonitorFromPoint(POINT, UINT);\r
-  extern BOOL     WINAPI xGetMonitorInfo(HMONITOR, LPMONITORINFO);\r
-  extern BOOL     WINAPI xEnumDisplayMonitors(HDC, LPCRECT, MONITORENUMPROC, LPARAM);\r
-  extern BOOL     WINAPI xEnumDisplayDevices(LPVOID, int, DISPLAY_DEVICE *, DWORD);\r
-\r
-#endif    // COMPILE_MULTIMON_STUBS\r
-\r
-//\r
-// build defines that replace the regular APIs with our versions\r
-//\r
-#define GetSystemMetrics    xGetSystemMetrics\r
-#define MonitorFromWindow   xMonitorFromWindow\r
-#define MonitorFromRect     xMonitorFromRect\r
-#define MonitorFromPoint    xMonitorFromPoint\r
-#define GetMonitorInfo      xGetMonitorInfo\r
-#define EnumDisplayMonitors xEnumDisplayMonitors\r
-#define EnumDisplayDevices  xEnumDisplayDevices\r
-\r
-#ifdef __cplusplus\r
-}\r
-#endif // __cplusplus\r
-\r
-#endif // WIN32\r
-\r
-#endif // __MULTIMON_H
\ No newline at end of file
+#ifndef __MULTIMON_H
+#define __MULTIMON_H
+
+#ifdef _WIN32
+
+//=============================================================================
+//
+// MULTIMON
+// stub module that "stubs" multiple monitor APIs on pre-Memphis Win32 OSes
+//
+// By using this header your code will work unchanged on Win95,
+// you will get back correct values from GetSystemMetrics() for new metrics
+// and the new APIs will act like only one display is present.
+//
+// exactly one source must include this with COMPILE_MULTIMON_STUBS defined
+//
+//=============================================================================
+
+#ifdef __cplusplus
+extern "C" {            /* Assume C declarations for C++ */
+#endif  /* __cplusplus */
+
+//
+// if we are building on Win95/NT4 headers we need to declare this stuff ourselves
+//
+#ifndef SM_CMONITORS
+
+#define SM_XVIRTUALSCREEN                   76
+#define SM_YVIRTUALSCREEN                   77
+#define SM_CXVIRTUALSCREEN                  78
+#define SM_CYVIRTUALSCREEN                  79
+#define SM_CMONITORS                        80
+#define SM_SAMEDISPLAYFORMAT                81
+
+DECLARE_HANDLE(HMONITOR);
+
+#define MONITOR_DEFAULTTONULL               0x00000000
+#define MONITOR_DEFAULTTOPRIMARY            0x00000001
+#define MONITOR_DEFAULTTONEAREST            0x00000002
+
+#define MONITORINFOF_PRIMARY                0x00000001
+
+typedef struct tagMONITORINFO
+{
+  DWORD cbSize;
+  RECT  rcMonitor;
+  RECT  rcWork;
+  DWORD dwFlags;
+} MONITORINFO, *LPMONITORINFO;
+
+#define CCHDEVICENAME 32
+
+#ifdef __cplusplus
+typedef struct tagMONITORINFOEX : public tagMONITORINFO
+{
+  TCHAR       szDevice[CCHDEVICENAME];
+} MONITORINFOEX, *LPMONITORINFOEX;
+#else
+typedef struct
+{
+  MONITORINFO;
+  TCHAR       szDevice[CCHDEVICENAME];
+} MONITORINFOEX, *LPMONITORINFOEX;
+#endif
+
+typedef BOOL (CALLBACK* MONITORENUMPROC)(HMONITOR, HDC, LPRECT, LPARAM);
+
+#endif // SM_CMONITORS
+
+#ifndef DISPLAY_DEVICE_ATTACHED_TO_DESKTOP
+
+typedef struct {
+  DWORD cb;
+  CHAR  DeviceName[32];
+  CHAR  DeviceString[128];
+  DWORD StateFlags;
+} DISPLAY_DEVICE;
+
+#define DISPLAY_DEVICE_ATTACHED_TO_DESKTOP  0x00000001
+#define DISPLAY_DEVICE_MULTI_DRIVER         0x00000002
+#define DISPLAY_DEVICE_PRIMARY_DEVICE       0x00000004
+#define DISPLAY_DEVICE_MIRRORING_DRIVER     0x00000008
+
+#endif
+#define DISPLAY_DEVICE_VGA                  0x00000010
+
+#ifndef ENUM_CURRENT_SETTINGS
+#define ENUM_CURRENT_SETTINGS               ((DWORD)-1)
+#define ENUM_REGISTRY_SETTINGS              ((DWORD)-2)
+#endif
+
+#undef GetMonitorInfo
+#undef GetSystemMetrics
+#undef MonitorFromWindow
+#undef MonitorFromRect
+#undef MonitorFromPoint
+#undef EnumDisplayMonitors
+#undef EnumDisplayDevices
+
+//
+// define this to compile the stubs
+// otherwise you get the declarations
+//
+#ifdef COMPILE_MULTIMON_STUBS
+
+  //---------------------------------------------------------------------------
+  //
+  // Implement the API stubs.
+  //
+  //---------------------------------------------------------------------------
+
+  int       (WINAPI* g_pfnGetSystemMetrics)(int);
+  HMONITOR  (WINAPI* g_pfnMonitorFromWindow)(HWND, BOOL);
+  HMONITOR  (WINAPI* g_pfnMonitorFromRect)(LPCRECT, BOOL);
+  HMONITOR  (WINAPI* g_pfnMonitorFromPoint)(POINT, BOOL);
+  BOOL      (WINAPI* g_pfnGetMonitorInfo)(HMONITOR, LPMONITORINFO);
+  BOOL      (WINAPI* g_pfnEnumDisplayMonitors)(HDC, LPCRECT, MONITORENUMPROC, LPARAM);
+  BOOL      (WINAPI *g_pfnEnumDisplayDevices)(LPVOID, int, DISPLAY_DEVICE *, DWORD);
+
+  BOOL InitMultipleMonitorStubs(void)
+  {
+    HMODULE hUser32;
+    static BOOL fInitDone;
+
+    if (fInitDone)
+    {
+      return g_pfnGetMonitorInfo != NULL;
+    }
+
+    if ((hUser32 = GetModuleHandle(TEXT("USER32"))) &&
+        (*(FARPROC*)&g_pfnGetSystemMetrics    = GetProcAddress(hUser32,"GetSystemMetrics")) &&
+        (*(FARPROC*)&g_pfnMonitorFromWindow   = GetProcAddress(hUser32,"MonitorFromWindow")) &&
+        (*(FARPROC*)&g_pfnMonitorFromRect     = GetProcAddress(hUser32,"MonitorFromRect")) &&
+        (*(FARPROC*)&g_pfnMonitorFromPoint    = GetProcAddress(hUser32,"MonitorFromPoint")) &&
+        (*(FARPROC*)&g_pfnEnumDisplayMonitors = GetProcAddress(hUser32,"EnumDisplayMonitors")) &&
+    #ifdef UNICODE
+        (*(FARPROC*)&g_pfnGetMonitorInfo      = GetProcAddress(hUser32,"GetMonitorInfoW")) &&
+        (*(FARPROC*)&g_pfnEnumDisplayDevices  = GetProcAddress(hUser32,"EnumDisplayDevicesW")) &&
+    #else
+        (*(FARPROC*)&g_pfnGetMonitorInfo      = GetProcAddress(hUser32,"GetMonitorInfoA")) &&
+        (*(FARPROC*)&g_pfnEnumDisplayDevices  = GetProcAddress(hUser32,"EnumDisplayDevicesA")) &&
+    #endif
+        (GetSystemMetrics(SM_CXVIRTUALSCREEN) >= GetSystemMetrics(SM_CXSCREEN)) &&
+        (GetSystemMetrics(SM_CYVIRTUALSCREEN) >= GetSystemMetrics(SM_CYSCREEN)) )
+    {
+      fInitDone = TRUE;
+      return TRUE;
+    }
+    else
+    {
+      g_pfnGetSystemMetrics    = NULL;
+      g_pfnMonitorFromWindow   = NULL;
+      g_pfnMonitorFromRect     = NULL;
+      g_pfnMonitorFromPoint    = NULL;
+      g_pfnGetMonitorInfo      = NULL;
+      g_pfnEnumDisplayMonitors = NULL;
+      g_pfnEnumDisplayDevices  = NULL;
+
+      fInitDone = TRUE;
+      return FALSE;
+    }
+  }
+
+  //---------------------------------------------------------------------------
+  //
+  // "stubbed" implementations of Monitor APIs that work with the primary          //  display
+  //
+  //---------------------------------------------------------------------------
+
+  int WINAPI
+  xGetSystemMetrics(int nIndex)
+  {
+    if (InitMultipleMonitorStubs())
+      return g_pfnGetSystemMetrics(nIndex);
+
+    switch (nIndex)
+    {
+    case SM_CMONITORS:
+    case SM_SAMEDISPLAYFORMAT:
+      return 1;
+
+    case SM_XVIRTUALSCREEN:
+    case SM_YVIRTUALSCREEN:
+      return 0;
+
+    case SM_CXVIRTUALSCREEN:
+      nIndex = SM_CXSCREEN;
+      break;
+
+    case SM_CYVIRTUALSCREEN:
+      nIndex = SM_CYSCREEN;
+      break;
+    }
+
+    return GetSystemMetrics(nIndex);
+  }
+
+  #define xPRIMARY_MONITOR ((HMONITOR)0x42)
+
+  HMONITOR WINAPI
+  xMonitorFromRect(LPCRECT lprcScreenCoords,
+                   UINT uFlags)
+  {
+    if (InitMultipleMonitorStubs())
+      return g_pfnMonitorFromRect(lprcScreenCoords, uFlags);
+
+    if ((uFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||
+        ((lprcScreenCoords->right > 0) &&
+        (lprcScreenCoords->bottom > 0) &&
+        (lprcScreenCoords->left < GetSystemMetrics(SM_CXSCREEN)) &&
+        (lprcScreenCoords->top < GetSystemMetrics(SM_CYSCREEN))))
+    {
+      return xPRIMARY_MONITOR;
+    }
+
+    return NULL;
+  }
+
+  HMONITOR WINAPI
+  xMonitorFromWindow(HWND hWnd,
+                     UINT uFlags)
+  {
+    RECT rc;
+
+    if (InitMultipleMonitorStubs())
+      return g_pfnMonitorFromWindow(hWnd, uFlags);
+
+    if (uFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST))
+      return xPRIMARY_MONITOR;
+
+    if (GetWindowRect(hWnd, &rc))
+      return xMonitorFromRect(&rc, uFlags);
+
+    return NULL;
+  }
+
+  HMONITOR WINAPI
+  xMonitorFromPoint(POINT ptScreenCoords,
+                    UINT uFlags)
+  {
+    if (InitMultipleMonitorStubs())
+      return g_pfnMonitorFromPoint(ptScreenCoords, uFlags);
+
+    if ((uFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||
+        ((ptScreenCoords.x >= 0) &&
+        (ptScreenCoords.x < GetSystemMetrics(SM_CXSCREEN)) &&
+        (ptScreenCoords.y >= 0) &&
+        (ptScreenCoords.y < GetSystemMetrics(SM_CYSCREEN))))
+    {
+      return xPRIMARY_MONITOR;
+    }
+
+    return NULL;
+  }
+
+  BOOL WINAPI
+  xGetMonitorInfo(HMONITOR hMonitor,
+                  LPMONITORINFO lpMonitorInfo)
+  {
+    RECT rcWork;
+
+    if (InitMultipleMonitorStubs())
+      return g_pfnGetMonitorInfo(hMonitor, lpMonitorInfo);
+
+    if ((hMonitor == xPRIMARY_MONITOR) && lpMonitorInfo &&
+        (lpMonitorInfo->cbSize >= sizeof(MONITORINFO)) &&
+        SystemParametersInfo(SPI_GETWORKAREA, 0, &rcWork, 0))
+    {
+      lpMonitorInfo->rcMonitor.left = 0;
+      lpMonitorInfo->rcMonitor.top  = 0;
+      lpMonitorInfo->rcMonitor.right  = GetSystemMetrics(SM_CXSCREEN);
+      lpMonitorInfo->rcMonitor.bottom = GetSystemMetrics(SM_CYSCREEN);
+      lpMonitorInfo->rcWork = rcWork;
+      lpMonitorInfo->dwFlags = MONITORINFOF_PRIMARY;
+
+      if (lpMonitorInfo->cbSize >= sizeof(MONITORINFOEX))
+          lstrcpy(((MONITORINFOEX*)lpMonitorInfo)->szDevice,
+          TEXT("DISPLAY"));
+
+      return TRUE;
+    }
+
+    return FALSE;
+  }
+
+  BOOL WINAPI
+  xEnumDisplayMonitors(HDC hdc,
+                       LPCRECT lprcIntersect, 
+                       MONITORENUMPROC lpfnEnumProc,
+                       LPARAM lData)
+  {
+    RECT rcCallback, rcLimit;
+
+    if (InitMultipleMonitorStubs())
+      return g_pfnEnumDisplayMonitors(hdc, lprcIntersect, lpfnEnumProc, lData);
+    
+    if (!lpfnEnumProc)
+      return FALSE;
+
+    rcLimit.left   = 0;
+    rcLimit.top    = 0;
+    rcLimit.right  = GetSystemMetrics(SM_CXSCREEN);
+    rcLimit.bottom = GetSystemMetrics(SM_CYSCREEN);
+
+    if (hdc)
+    {
+      RECT rcClip;
+      HWND hWnd;
+
+      if ((hWnd = WindowFromDC(hdc)) == NULL)
+        return FALSE;
+
+      switch (GetClipBox(hdc, &rcClip))
+      {
+      default:
+        MapWindowPoints(NULL, hWnd, (LPPOINT)&rcLimit, 2);
+        if (IntersectRect(&rcCallback, &rcClip, &rcLimit))
+          break;
+      //fall thru
+      case NULLREGION:
+        return TRUE;
+      case ERROR:
+        return FALSE;
+      }
+
+      rcLimit = rcCallback;
+    }
+
+    if (!lprcIntersect || IntersectRect(&rcCallback, lprcIntersect, &rcLimit))
+    {
+      lpfnEnumProc(xPRIMARY_MONITOR, hdc, &rcCallback, lData);
+    }
+
+    return TRUE;
+  }
+
+  BOOL WINAPI
+  xEnumDisplayDevices(LPVOID lpReserved,
+                      int iDeviceNum, 
+                      DISPLAY_DEVICE * pDisplayDevice,
+                      DWORD dwFlags)
+  {
+    if (InitMultipleMonitorStubs())
+      return g_pfnEnumDisplayDevices(lpReserved, iDeviceNum, pDisplayDevice, dwFlags);
+    
+    return FALSE;
+  }
+
+  #undef xPRIMARY_MONITOR
+  #undef COMPILE_MULTIMON_STUBS
+
+#else    // COMPILE_MULTIMON_STUBS
+
+  extern int      WINAPI xGetSystemMetrics(int);
+  extern HMONITOR WINAPI xMonitorFromWindow(HWND, UINT);
+  extern HMONITOR WINAPI xMonitorFromRect(LPCRECT, UINT);
+  extern HMONITOR WINAPI xMonitorFromPoint(POINT, UINT);
+  extern BOOL     WINAPI xGetMonitorInfo(HMONITOR, LPMONITORINFO);
+  extern BOOL     WINAPI xEnumDisplayMonitors(HDC, LPCRECT, MONITORENUMPROC, LPARAM);
+  extern BOOL     WINAPI xEnumDisplayDevices(LPVOID, int, DISPLAY_DEVICE *, DWORD);
+
+#endif    // COMPILE_MULTIMON_STUBS
+
+//
+// build defines that replace the regular APIs with our versions
+//
+#define GetSystemMetrics    xGetSystemMetrics
+#define MonitorFromWindow   xMonitorFromWindow
+#define MonitorFromRect     xMonitorFromRect
+#define MonitorFromPoint    xMonitorFromPoint
+#define GetMonitorInfo      xGetMonitorInfo
+#define EnumDisplayMonitors xEnumDisplayMonitors
+#define EnumDisplayDevices  xEnumDisplayDevices
+
+#ifdef __cplusplus
+}
+#endif // __cplusplus
+
+#endif // WIN32
+
+#endif // __MULTIMON_H