503 lines
		
	
	
		
			15 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			503 lines
		
	
	
		
			15 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
//=============================================================================
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//
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// multimon.h -- Stub module that fakes multiple monitor apis on Win32 OSes
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//               without them.
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//
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// By using this header your code will get back default values from
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// GetSystemMetrics() for new metrics, and the new multimonitor APIs
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// will act like only one display is present on a Win32 OS without
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// multimonitor APIs.
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//
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// Exactly one source must include this with COMPILE_MULTIMON_STUBS defined.
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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//=============================================================================
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#ifdef __cplusplus
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extern "C" {            // Assume C declarations for C++
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#endif // __cplusplus
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//
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// If we are building with Win95/NT4 headers, we need to declare
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// the multimonitor-related metrics and APIs ourselves.
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//
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#ifndef SM_CMONITORS
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#define SM_XVIRTUALSCREEN       76
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#define SM_YVIRTUALSCREEN       77
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#define SM_CXVIRTUALSCREEN      78
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#define SM_CYVIRTUALSCREEN      79
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#define SM_CMONITORS            80
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#define SM_SAMEDISPLAYFORMAT    81
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// HMONITOR is already declared if WINVER >= 0x0500 in windef.h
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// This is for components built with an older version number.
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//
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#if !defined(HMONITOR_DECLARED) && (WINVER < 0x0500)
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DECLARE_HANDLE(HMONITOR);
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#define HMONITOR_DECLARED
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#endif
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#define MONITOR_DEFAULTTONULL       0x00000000
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#define MONITOR_DEFAULTTOPRIMARY    0x00000001
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#define MONITOR_DEFAULTTONEAREST    0x00000002
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#define MONITORINFOF_PRIMARY        0x00000001
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typedef struct tagMONITORINFO
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{
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    DWORD   cbSize;
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    RECT    rcMonitor;
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    RECT    rcWork;
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    DWORD   dwFlags;
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} MONITORINFO, *LPMONITORINFO;
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#ifndef CCHDEVICENAME
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#define CCHDEVICENAME 32
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#endif
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#ifdef __cplusplus
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typedef struct tagMONITORINFOEXA : public tagMONITORINFO
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{
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    CHAR        szDevice[CCHDEVICENAME];
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} MONITORINFOEXA, *LPMONITORINFOEXA;
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typedef struct tagMONITORINFOEXW : public tagMONITORINFO
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{
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    WCHAR       szDevice[CCHDEVICENAME];
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} MONITORINFOEXW, *LPMONITORINFOEXW;
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#ifdef UNICODE
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typedef MONITORINFOEXW MONITORINFOEX;
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typedef LPMONITORINFOEXW LPMONITORINFOEX;
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#else
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typedef MONITORINFOEXA MONITORINFOEX;
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typedef LPMONITORINFOEXA LPMONITORINFOEX;
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#endif // UNICODE
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#else // ndef __cplusplus
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typedef struct tagMONITORINFOEXA
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{
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    MONITORINFO;
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    CHAR        szDevice[CCHDEVICENAME];
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} MONITORINFOEXA, *LPMONITORINFOEXA;
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typedef struct tagMONITORINFOEXW
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{
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    MONITORINFO;
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    WCHAR       szDevice[CCHDEVICENAME];
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} MONITORINFOEXW, *LPMONITORINFOEXW;
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#ifdef UNICODE
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typedef MONITORINFOEXW MONITORINFOEX;
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typedef LPMONITORINFOEXW LPMONITORINFOEX;
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#else
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typedef MONITORINFOEXA MONITORINFOEX;
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typedef LPMONITORINFOEXA LPMONITORINFOEX;
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#endif // UNICODE
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#endif
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typedef BOOL (CALLBACK* MONITORENUMPROC)(HMONITOR, HDC, LPRECT, LPARAM);
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#ifndef DISPLAY_DEVICE_ATTACHED_TO_DESKTOP
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typedef struct _DISPLAY_DEVICEA {
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    DWORD  cb;
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    CHAR   DeviceName[32];
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    CHAR   DeviceString[128];
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    DWORD  StateFlags;
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    CHAR   DeviceID[128];
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    CHAR   DeviceKey[128];
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} DISPLAY_DEVICEA, *PDISPLAY_DEVICEA, *LPDISPLAY_DEVICEA;
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typedef struct _DISPLAY_DEVICEW {
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    DWORD  cb;
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    WCHAR  DeviceName[32];
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    WCHAR  DeviceString[128];
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    DWORD  StateFlags;
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    WCHAR  DeviceID[128];
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    WCHAR  DeviceKey[128];
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} DISPLAY_DEVICEW, *PDISPLAY_DEVICEW, *LPDISPLAY_DEVICEW;
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#ifdef UNICODE
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typedef DISPLAY_DEVICEW DISPLAY_DEVICE;
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typedef PDISPLAY_DEVICEW PDISPLAY_DEVICE;
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typedef LPDISPLAY_DEVICEW LPDISPLAY_DEVICE;
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#else
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typedef DISPLAY_DEVICEA DISPLAY_DEVICE;
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typedef PDISPLAY_DEVICEA PDISPLAY_DEVICE;
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typedef LPDISPLAY_DEVICEA LPDISPLAY_DEVICE;
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#endif // UNICODE
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#define DISPLAY_DEVICE_ATTACHED_TO_DESKTOP 0x00000001
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#define DISPLAY_DEVICE_MULTI_DRIVER        0x00000002
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#define DISPLAY_DEVICE_PRIMARY_DEVICE      0x00000004
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#define DISPLAY_DEVICE_MIRRORING_DRIVER    0x00000008
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#define DISPLAY_DEVICE_VGA_COMPATIBLE      0x00000010
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#endif
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#endif  // SM_CMONITORS
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#undef GetMonitorInfo
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#undef GetSystemMetrics
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#undef MonitorFromWindow
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#undef MonitorFromRect
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#undef MonitorFromPoint
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#undef EnumDisplayMonitors
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#undef EnumDisplayDevices
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//
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// Define COMPILE_MULTIMON_STUBS to compile the stubs;
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// otherwise, you get the declarations.
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//
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#ifdef COMPILE_MULTIMON_STUBS
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//-----------------------------------------------------------------------------
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//
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// Implement the API stubs.
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//
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//-----------------------------------------------------------------------------
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#ifndef _MULTIMON_USE_SECURE_CRT
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#if defined(__GOT_SECURE_LIB__) && __GOT_SECURE_LIB__ >= 200402L
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#define _MULTIMON_USE_SECURE_CRT 1
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#else
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#define _MULTIMON_USE_SECURE_CRT 0
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#endif
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#endif
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#ifndef MULTIMON_FNS_DEFINED
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int      (WINAPI* g_pfnGetSystemMetrics)(int) = NULL;
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HMONITOR (WINAPI* g_pfnMonitorFromWindow)(HWND, DWORD) = NULL;
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HMONITOR (WINAPI* g_pfnMonitorFromRect)(LPCRECT, DWORD) = NULL;
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HMONITOR (WINAPI* g_pfnMonitorFromPoint)(POINT, DWORD) = NULL;
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BOOL     (WINAPI* g_pfnGetMonitorInfo)(HMONITOR, LPMONITORINFO) = NULL;
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BOOL     (WINAPI* g_pfnEnumDisplayMonitors)(HDC, LPCRECT, MONITORENUMPROC, LPARAM) = NULL;
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BOOL     (WINAPI* g_pfnEnumDisplayDevices)(PVOID, DWORD, PDISPLAY_DEVICE,DWORD) = NULL;
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BOOL     g_fMultiMonInitDone = FALSE;
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BOOL     g_fMultimonPlatformNT = FALSE;
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#endif
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BOOL IsPlatformNT()
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{
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    OSVERSIONINFOA osvi = {0};
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    osvi.dwOSVersionInfoSize = sizeof(osvi);
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    GetVersionExA((OSVERSIONINFOA*)&osvi);
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    return (VER_PLATFORM_WIN32_NT == osvi.dwPlatformId);
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}
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BOOL InitMultipleMonitorStubs(void)
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{
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    HMODULE hUser32;
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    if (g_fMultiMonInitDone)
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    {
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        return g_pfnGetMonitorInfo != NULL;
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    }
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    g_fMultimonPlatformNT = IsPlatformNT();
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    hUser32 = GetModuleHandle(TEXT("USER32"));
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    if (hUser32 &&
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        (*(FARPROC*)&g_pfnGetSystemMetrics    = GetProcAddress(hUser32,"GetSystemMetrics")) != NULL &&
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        (*(FARPROC*)&g_pfnMonitorFromWindow   = GetProcAddress(hUser32,"MonitorFromWindow")) != NULL &&
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        (*(FARPROC*)&g_pfnMonitorFromRect     = GetProcAddress(hUser32,"MonitorFromRect")) != NULL &&
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        (*(FARPROC*)&g_pfnMonitorFromPoint    = GetProcAddress(hUser32,"MonitorFromPoint")) != NULL &&
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        (*(FARPROC*)&g_pfnEnumDisplayMonitors = GetProcAddress(hUser32,"EnumDisplayMonitors")) != NULL &&
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#ifdef UNICODE
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        (*(FARPROC*)&g_pfnEnumDisplayDevices  = GetProcAddress(hUser32,"EnumDisplayDevicesW")) != NULL &&
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        (*(FARPROC*)&g_pfnGetMonitorInfo      = g_fMultimonPlatformNT ? GetProcAddress(hUser32,"GetMonitorInfoW") :
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                                                GetProcAddress(hUser32,"GetMonitorInfoA")) != NULL
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#else
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        (*(FARPROC*)&g_pfnGetMonitorInfo      = GetProcAddress(hUser32,"GetMonitorInfoA")) != NULL &&
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        (*(FARPROC*)&g_pfnEnumDisplayDevices  = GetProcAddress(hUser32,"EnumDisplayDevicesA")) != NULL
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#endif
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    ) {
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        g_fMultiMonInitDone = TRUE;
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        return TRUE;
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    }
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    else
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    {
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        g_pfnGetSystemMetrics    = NULL;
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        g_pfnMonitorFromWindow   = NULL;
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        g_pfnMonitorFromRect     = NULL;
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        g_pfnMonitorFromPoint    = NULL;
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        g_pfnGetMonitorInfo      = NULL;
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        g_pfnEnumDisplayMonitors = NULL;
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        g_pfnEnumDisplayDevices  = NULL;
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        g_fMultiMonInitDone = TRUE;
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        return FALSE;
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    }
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}
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//-----------------------------------------------------------------------------
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//
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// fake implementations of Monitor APIs that work with the primary display
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// no special parameter validation is made since these run in client code
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//
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//-----------------------------------------------------------------------------
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int WINAPI
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xGetSystemMetrics(int nIndex)
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{
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    if (InitMultipleMonitorStubs())
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        return g_pfnGetSystemMetrics(nIndex);
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    switch (nIndex)
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    {
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    case SM_CMONITORS:
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    case SM_SAMEDISPLAYFORMAT:
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        return 1;
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    case SM_XVIRTUALSCREEN:
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    case SM_YVIRTUALSCREEN:
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        return 0;
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    case SM_CXVIRTUALSCREEN:
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        nIndex = SM_CXSCREEN;
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        break;
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    case SM_CYVIRTUALSCREEN:
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        nIndex = SM_CYSCREEN;
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        break;
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    }
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    return GetSystemMetrics(nIndex);
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}
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#define xPRIMARY_MONITOR ((HMONITOR)0x12340042)
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HMONITOR WINAPI
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xMonitorFromPoint(POINT ptScreenCoords, DWORD dwFlags)
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{
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    if (InitMultipleMonitorStubs())
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        return g_pfnMonitorFromPoint(ptScreenCoords, dwFlags);
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    if ((dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||
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        ((ptScreenCoords.x >= 0) &&
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        (ptScreenCoords.x < GetSystemMetrics(SM_CXSCREEN)) &&
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        (ptScreenCoords.y >= 0) &&
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        (ptScreenCoords.y < GetSystemMetrics(SM_CYSCREEN))))
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    {
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        return xPRIMARY_MONITOR;
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    }
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    return NULL;
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}
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HMONITOR WINAPI
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xMonitorFromRect(LPCRECT lprcScreenCoords, DWORD dwFlags)
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{
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    if (InitMultipleMonitorStubs())
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        return g_pfnMonitorFromRect(lprcScreenCoords, dwFlags);
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    if ((dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||
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        ((lprcScreenCoords->right > 0) &&
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        (lprcScreenCoords->bottom > 0) &&
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        (lprcScreenCoords->left < GetSystemMetrics(SM_CXSCREEN)) &&
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        (lprcScreenCoords->top < GetSystemMetrics(SM_CYSCREEN))))
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    {
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        return xPRIMARY_MONITOR;
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    }
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    return NULL;
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}
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HMONITOR WINAPI
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xMonitorFromWindow(HWND hWnd, DWORD dwFlags)
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{
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    WINDOWPLACEMENT wp;
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    if (InitMultipleMonitorStubs())
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        return g_pfnMonitorFromWindow(hWnd, dwFlags);
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    if (dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST))
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        return xPRIMARY_MONITOR;
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    if (IsIconic(hWnd) ?
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            GetWindowPlacement(hWnd, &wp) :
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            GetWindowRect(hWnd, &wp.rcNormalPosition)) {
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        return xMonitorFromRect(&wp.rcNormalPosition, dwFlags);
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    }
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    return NULL;
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}
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BOOL WINAPI
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xGetMonitorInfo(HMONITOR hMonitor, __inout LPMONITORINFO lpMonitorInfo)
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{
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    RECT rcWork;
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    if (InitMultipleMonitorStubs())
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    {
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        BOOL f = g_pfnGetMonitorInfo(hMonitor, lpMonitorInfo);
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#ifdef UNICODE
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        if (f && !g_fMultimonPlatformNT && (lpMonitorInfo->cbSize >= sizeof(MONITORINFOEX)))
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        {
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            MultiByteToWideChar(CP_ACP, 0,
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                (LPSTR)((MONITORINFOEX*)lpMonitorInfo)->szDevice, -1,
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                ((MONITORINFOEX*)lpMonitorInfo)->szDevice, (sizeof(((MONITORINFOEX*)lpMonitorInfo)->szDevice)/sizeof(TCHAR)));
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        }
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#endif
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        return f;
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    }
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    if ((hMonitor == xPRIMARY_MONITOR) &&
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        lpMonitorInfo &&
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        (lpMonitorInfo->cbSize >= sizeof(MONITORINFO)) &&
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        SystemParametersInfoA(SPI_GETWORKAREA, 0, &rcWork, 0))
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    {
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        lpMonitorInfo->rcMonitor.left = 0;
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        lpMonitorInfo->rcMonitor.top  = 0;
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        lpMonitorInfo->rcMonitor.right  = GetSystemMetrics(SM_CXSCREEN);
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        lpMonitorInfo->rcMonitor.bottom = GetSystemMetrics(SM_CYSCREEN);
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        lpMonitorInfo->rcWork = rcWork;
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        lpMonitorInfo->dwFlags = MONITORINFOF_PRIMARY;
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        if (lpMonitorInfo->cbSize >= sizeof(MONITORINFOEX))
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        {
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#ifdef UNICODE
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            MultiByteToWideChar(CP_ACP, 0, "DISPLAY", -1, ((MONITORINFOEX*)lpMonitorInfo)->szDevice, (sizeof(((MONITORINFOEX*)lpMonitorInfo)->szDevice)/sizeof(TCHAR)));
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#else // UNICODE
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#if _MULTIMON_USE_SECURE_CRT
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            strncpy_s(((MONITORINFOEX*)lpMonitorInfo)->szDevice, (sizeof(((MONITORINFOEX*)lpMonitorInfo)->szDevice)/sizeof(TCHAR)), TEXT("DISPLAY"), (sizeof(((MONITORINFOEX*)lpMonitorInfo)->szDevice)/sizeof(TCHAR)) - 1);
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#else
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            lstrcpyn(((MONITORINFOEX*)lpMonitorInfo)->szDevice, TEXT("DISPLAY"), (sizeof(((MONITORINFOEX*)lpMonitorInfo)->szDevice)/sizeof(TCHAR)));
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#endif // _MULTIMON_USE_SECURE_CRT
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#endif // UNICODE
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        }
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        return TRUE;
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    }
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    return FALSE;
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}
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BOOL WINAPI
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xEnumDisplayMonitors(
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        HDC             hdcOptionalForPainting,
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        LPCRECT         lprcEnumMonitorsThatIntersect,
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        MONITORENUMPROC lpfnEnumProc,
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        LPARAM          dwData)
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{
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    RECT rcLimit;
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    if (InitMultipleMonitorStubs()) {
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        return g_pfnEnumDisplayMonitors(
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                hdcOptionalForPainting,
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                lprcEnumMonitorsThatIntersect,
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                lpfnEnumProc,
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                dwData);
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    }
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    if (!lpfnEnumProc)
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        return FALSE;
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    rcLimit.left   = 0;
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    rcLimit.top    = 0;
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    rcLimit.right  = GetSystemMetrics(SM_CXSCREEN);
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    rcLimit.bottom = GetSystemMetrics(SM_CYSCREEN);
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    if (hdcOptionalForPainting)
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    {
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        RECT    rcClip;
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        POINT   ptOrg;
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        switch (GetClipBox(hdcOptionalForPainting, &rcClip))
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        {
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        default:
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            if (!GetDCOrgEx(hdcOptionalForPainting, &ptOrg))
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                return FALSE;
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            OffsetRect(&rcLimit, -ptOrg.x, -ptOrg.y);
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            if (IntersectRect(&rcLimit, &rcLimit, &rcClip) &&
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                (!lprcEnumMonitorsThatIntersect ||
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                     IntersectRect(&rcLimit, &rcLimit, lprcEnumMonitorsThatIntersect))) {
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                break;
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            }
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            //fall thru
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        case NULLREGION:
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             return TRUE;
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        case ERROR:
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             return FALSE;
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        }
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    } else {
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        if (    lprcEnumMonitorsThatIntersect &&
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                !IntersectRect(&rcLimit, &rcLimit, lprcEnumMonitorsThatIntersect)) {
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            return TRUE;
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        }
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    }
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    return lpfnEnumProc(
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            xPRIMARY_MONITOR,
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            hdcOptionalForPainting,
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            &rcLimit,
 | 
						|
            dwData);
 | 
						|
}
 | 
						|
 | 
						|
BOOL WINAPI
 | 
						|
xEnumDisplayDevices(
 | 
						|
    PVOID Unused,
 | 
						|
    DWORD iDevNum,
 | 
						|
    __inout PDISPLAY_DEVICE lpDisplayDevice,
 | 
						|
    DWORD dwFlags)
 | 
						|
{
 | 
						|
    if (InitMultipleMonitorStubs())
 | 
						|
        return g_pfnEnumDisplayDevices(Unused, iDevNum, lpDisplayDevice, dwFlags);
 | 
						|
 | 
						|
    if (Unused != NULL)
 | 
						|
        return FALSE;
 | 
						|
 | 
						|
    if (iDevNum != 0)
 | 
						|
        return FALSE;
 | 
						|
 | 
						|
    if (lpDisplayDevice == NULL || lpDisplayDevice->cb < sizeof(DISPLAY_DEVICE))
 | 
						|
        return FALSE;
 | 
						|
 | 
						|
#ifdef UNICODE
 | 
						|
    MultiByteToWideChar(CP_ACP, 0, "DISPLAY", -1, lpDisplayDevice->DeviceName, (sizeof(lpDisplayDevice->DeviceName)/sizeof(TCHAR)));
 | 
						|
    MultiByteToWideChar(CP_ACP, 0, "DISPLAY", -1, lpDisplayDevice->DeviceString, (sizeof(lpDisplayDevice->DeviceString)/sizeof(TCHAR)));
 | 
						|
#else // UNICODE
 | 
						|
#if _MULTIMON_USE_SECURE_CRT
 | 
						|
    strncpy_s((LPTSTR)lpDisplayDevice->DeviceName, (sizeof(lpDisplayDevice->DeviceName)/sizeof(TCHAR)), TEXT("DISPLAY"), (sizeof(lpDisplayDevice->DeviceName)/sizeof(TCHAR)) - 1);
 | 
						|
    strncpy_s((LPTSTR)lpDisplayDevice->DeviceString, (sizeof(lpDisplayDevice->DeviceString)/sizeof(TCHAR)), TEXT("DISPLAY"), (sizeof(lpDisplayDevice->DeviceName)/sizeof(TCHAR)) - 1);
 | 
						|
#else
 | 
						|
    lstrcpyn((LPTSTR)lpDisplayDevice->DeviceName,   TEXT("DISPLAY"), (sizeof(lpDisplayDevice->DeviceName)/sizeof(TCHAR)));
 | 
						|
    lstrcpyn((LPTSTR)lpDisplayDevice->DeviceString, TEXT("DISPLAY"), (sizeof(lpDisplayDevice->DeviceString)/sizeof(TCHAR)));
 | 
						|
#endif // _MULTIMON_USE_SECURE_CRT
 | 
						|
#endif // UNICODE
 | 
						|
 | 
						|
    lpDisplayDevice->StateFlags = DISPLAY_DEVICE_ATTACHED_TO_DESKTOP | DISPLAY_DEVICE_PRIMARY_DEVICE;
 | 
						|
 | 
						|
    return TRUE;
 | 
						|
}
 | 
						|
 | 
						|
#undef xPRIMARY_MONITOR
 | 
						|
#undef COMPILE_MULTIMON_STUBS
 | 
						|
 | 
						|
#else   // COMPILE_MULTIMON_STUBS
 | 
						|
 | 
						|
extern int  WINAPI xGetSystemMetrics(int);
 | 
						|
extern HMONITOR WINAPI xMonitorFromWindow(HWND, DWORD);
 | 
						|
extern HMONITOR WINAPI xMonitorFromRect(LPCRECT, DWORD);
 | 
						|
extern HMONITOR WINAPI xMonitorFromPoint(POINT, DWORD);
 | 
						|
extern BOOL WINAPI xGetMonitorInfo(HMONITOR, LPMONITORINFO);
 | 
						|
extern BOOL WINAPI xEnumDisplayMonitors(HDC, LPCRECT, MONITORENUMPROC, LPARAM);
 | 
						|
extern BOOL WINAPI xEnumDisplayDevices(PVOID, DWORD, PDISPLAY_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
 | 
						|
 | 
						|
 |