1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
//------------------------------------------------------------------------------
// File: DDMM.cpp
//
// Desc: DirectShow base classes - implements routines for using DirectDraw
// on a multimonitor system.
//
// Copyright (c) 1995-2001 Microsoft Corporation. All rights reserved.
//------------------------------------------------------------------------------
#include <streams.h>
#include <ddraw.h>
#include "ddmm.h"
/*
* FindDeviceCallback
*/
typedef struct {
LPSTR szDevice;
GUID* lpGUID;
GUID GUID;
BOOL fFound;
} FindDeviceData;
BOOL CALLBACK FindDeviceCallback(__in_opt GUID* lpGUID, __in LPSTR szName, __in LPSTR szDevice, __in LPVOID lParam)
{
FindDeviceData *p = (FindDeviceData*)lParam;
if (lstrcmpiA(p->szDevice, szDevice) == 0) {
if (lpGUID) {
p->GUID = *lpGUID;
p->lpGUID = &p->GUID;
} else {
p->lpGUID = NULL;
}
p->fFound = TRUE;
return FALSE;
}
return TRUE;
}
BOOL CALLBACK FindDeviceCallbackEx(__in_opt GUID* lpGUID, __in LPSTR szName, __in LPSTR szDevice, __in LPVOID lParam, HMONITOR hMonitor)
{
FindDeviceData *p = (FindDeviceData*)lParam;
if (lstrcmpiA(p->szDevice, szDevice) == 0) {
if (lpGUID) {
p->GUID = *lpGUID;
p->lpGUID = &p->GUID;
} else {
p->lpGUID = NULL;
}
p->fFound = TRUE;
return FALSE;
}
return TRUE;
}
/*
* DirectDrawCreateFromDevice
*
* create a DirectDraw object for a particular device
*/
IDirectDraw * DirectDrawCreateFromDevice(__in_opt LPSTR szDevice, PDRAWCREATE DirectDrawCreateP, PDRAWENUM DirectDrawEnumerateP)
{
IDirectDraw* pdd = NULL;
FindDeviceData find;
if (szDevice == NULL) {
DirectDrawCreateP(NULL, &pdd, NULL);
return pdd;
}
find.szDevice = szDevice;
find.fFound = FALSE;
DirectDrawEnumerateP(FindDeviceCallback, (LPVOID)&find);
if (find.fFound)
{
//
// In 4bpp mode the following DDraw call causes a message box to be popped
// up by DDraw (!?!). It's DDraw's fault, but we don't like it. So we
// make sure it doesn't happen.
//
UINT ErrorMode = SetErrorMode(SEM_FAILCRITICALERRORS);
DirectDrawCreateP(find.lpGUID, &pdd, NULL);
SetErrorMode(ErrorMode);
}
return pdd;
}
/*
* DirectDrawCreateFromDeviceEx
*
* create a DirectDraw object for a particular device
*/
IDirectDraw * DirectDrawCreateFromDeviceEx(__in_opt LPSTR szDevice, PDRAWCREATE DirectDrawCreateP, LPDIRECTDRAWENUMERATEEXA DirectDrawEnumerateExP)
{
IDirectDraw* pdd = NULL;
FindDeviceData find;
if (szDevice == NULL) {
DirectDrawCreateP(NULL, &pdd, NULL);
return pdd;
}
find.szDevice = szDevice;
find.fFound = FALSE;
DirectDrawEnumerateExP(FindDeviceCallbackEx, (LPVOID)&find,
DDENUM_ATTACHEDSECONDARYDEVICES);
if (find.fFound)
{
//
// In 4bpp mode the following DDraw call causes a message box to be popped
// up by DDraw (!?!). It's DDraw's fault, but we don't like it. So we
// make sure it doesn't happen.
//
UINT ErrorMode = SetErrorMode(SEM_FAILCRITICALERRORS);
DirectDrawCreateP(find.lpGUID, &pdd, NULL);
SetErrorMode(ErrorMode);
}
return pdd;
}
|
