1 #include <windows.h>
2 #include <tchar.h>
3
4 //Functions & other definitions required-->
5 typedef int (__stdcall *MSGBOXAAPI)(IN HWND hWnd,
6 IN LPCSTR lpText, IN LPCSTR lpCaption,
7 IN UINT uType, IN WORD wLanguageId, IN DWORD dwMilliseconds);
8 typedef int (__stdcall *MSGBOXWAPI)(IN HWND hWnd,
9 IN LPCWSTR lpText, IN LPCWSTR lpCaption,
10 IN UINT uType, IN WORD wLanguageId, IN DWORD dwMilliseconds);
11
12 int MessageBoxTimeoutA(IN HWND hWnd, IN LPCSTR lpText,
13 IN LPCSTR lpCaption, IN UINT uType,
14 IN WORD wLanguageId, IN DWORD dwMilliseconds);
15 int MessageBoxTimeoutW(IN HWND hWnd, IN LPCWSTR lpText,
16 IN LPCWSTR lpCaption, IN UINT uType,
17 IN WORD wLanguageId, IN DWORD dwMilliseconds);
18
19 #ifdef UNICODE
20 #define MessageBoxTimeout MessageBoxTimeoutW
21 #else
22 #define MessageBoxTimeout MessageBoxTimeoutA
23 #endif
24
25 #define MB_TIMEDOUT 32000
26
27 int MessageBoxTimeoutA(HWND hWnd, LPCSTR lpText,
28 LPCSTR lpCaption, UINT uType, WORD wLanguageId,
29 DWORD dwMilliseconds)
30 {
31 static MSGBOXAAPI MsgBoxTOA = NULL;
32
33 if (!MsgBoxTOA)
34 {
35 HMODULE hUser32 = GetModuleHandle(_T("user32.dll"));
36 if (hUser32)
37 {
38 MsgBoxTOA = (MSGBOXAAPI)GetProcAddress(hUser32,
39 "MessageBoxTimeoutA");
40 //fall through to 'if (MsgBoxTOA)...'
41 }
42 else
43 {
44 //stuff happened, add code to handle it here
45 //(possibly just call MessageBox())
46 return 0;
47 }
48 }
49
50 if (MsgBoxTOA)
51 {
52 return MsgBoxTOA(hWnd, lpText, lpCaption,
53 uType, wLanguageId, dwMilliseconds);
54 }
55
56 return 0;
57 }
58
59 int MessageBoxTimeoutW(HWND hWnd, LPCWSTR lpText,
60 LPCWSTR lpCaption, UINT uType, WORD wLanguageId, DWORD dwMilliseconds)
61 {
62 static MSGBOXWAPI MsgBoxTOW = NULL;
63
64 if (!MsgBoxTOW)
65 {
66 HMODULE hUser32 = GetModuleHandle(_T("user32.dll"));
67 if (hUser32)
68 {
69 MsgBoxTOW = (MSGBOXWAPI)GetProcAddress(hUser32,
70 "MessageBoxTimeoutW");
71 //fall through to 'if (MsgBoxTOW)...'
72 }
73 else
74 {
75 //stuff happened, add code to handle it here
76 //(possibly just call MessageBox())
77 return 0;
78 }
79 }
80
81 if (MsgBoxTOW)
82 {
83 return MsgBoxTOW(hWnd, lpText, lpCaption,
84 uType, wLanguageId, dwMilliseconds);
85 }
86
87 return 0;
88 }
89 //End required definitions <--
90 //Call the function as follows:
91
92 // Collapse
93 //you must load user32.dll before calling the function
94 main()
95 {
96 HMODULE hUser32 = LoadLibrary(_T("user32.dll"));
97
98 if (hUser32)
99 {
100 int iRet = 0;
101 UINT uiFlags = MB_OK|MB_SETFOREGROUND|MB_SYSTEMMODAL|MB_ICONINFORMATION;
102
103 iRet = MessageBoxTimeout(NULL, _T("Test a timeout of 2 seconds."),
104 _T("MessageBoxTimeout Test"), uiFlags, 0, 2000);
105 //iRet will = 1
106
107 uiFlags = MB_YESNO|MB_SETFOREGROUND|MB_SYSTEMMODAL|MB_ICONINFORMATION;
108
109 iRet = MessageBoxTimeout(NULL, _T("Test a timeout of 5 seconds."),
110 _T("MessageBoxTimeout Test"), uiFlags, 0, 5000);
111 //iRet will = MB_TIMEDOUT if no buttons pressed, button values otherwise
112
113 //only unload user32.dll when you have no further need
114 //for the MessageBoxTimeout function
115 FreeLibrary(hUser32);
116 }
117 }
