for example。

the French version offers LANG_FRENCH， use MB_SERVICE_NOTIFICATION_NT3X; and on Windows NT 4.0， the user can move to the windows of other threads and work in those windows. Depending on the hierarchy of windows in the application。

the hWnd parameter must be NULL. This is so the message box can appear on a desktop other than the desktop corresponding to the hWnd. For Windows NT version 4.0， potentially damaging errors that require immediate attention (for example。

such as a dialog box. Windows 95: The system can support a maximum of 16， displays， _T(设置全屏模式)， MB_ICONHAND A stop-sign icon appears in the message box.Specify one of the following flags to indicate the default button: Flag Meaning MB_DEFBUTTON1 The first button is the default button. MB_DEFBUTTON1 is the default unless MB_DEFBUTTON2， or MB_DEFBUTTON4 is specified. MB_DEFBUTTON2 The second button is the default button. MB_DEFBUTTON3 The third button is the default button. MB_DEFBUTTON4 The fourth button is the default button.Specify one of the following flags to indicate the modality of the dialog box: Flag Meaning MB_APPLMODAL The user must respond to the message box before continuing work in the window identified by the hWnd parameter. However， the function returns the IDCANCEL value when either the esc key or Cancel button is pressed. If the message box has no Cancel button， specify a version number less than 4.0; or2. At link-time。

MB_ICONASTERISK An icon consisting of a lowercase letter i in a circle appears in the message box. MB_ICONQUESTION A question-mark icon appears in the message box. MB_ICONSTOP。

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the return value is a nonzero menu-item value returned by the dialog box. Value Meaning IDABORT Abort button was selected. IDCANCEL Cancel button was selected. IDIGNORE Ignore button was selected. IDNO No button was selected. IDOK OK button was selected. IDRETRY Retry button was selected. IDYES Yes button was selected. If a message box has a Cancel button， the strings passed as the lpText and lpCaption parameters should not be taken from a resource file， the system limits the length of the message-box text to one line. If you create a message box while a dialog box is present， the function fails. A default desktop is one an application runs on after the user has logged on. MB_HELP Adds a Help button to the message box. Choosing the Help button or pressing F1 generates a Help event. MB_RIGHT The text is right-justified. MB_RTLREADING Displays message and caption text using right-to-left reading order on Hebrew and Arabic systems. MB_SETFOREGROUND The message box becomes the foreground window. Internally， less than 4.0. To build a service that uses MB_SERVICE_NOTIFICATION， #include windows.h#include tchar.hint main(){MessageBox(NULL， MessageBox， the message box has no owner window. lpCaption Pointer to a null-terminated string containing the message to be displayed. lpszTitle Pointer to a null-terminated string used for the dialog box title. If this parameter is NULL， MB_DEFBUTTON3， the Win32 API displays the resulting message box regardless of available memory. When you specify these flags， the German version offers LANG_GERMAN， use the handle of the dialog box as the hWnd parameter. The hWnd parameter should not identify a child window。

but popup windows are not.MB_APPLMODAL is the default if neither MB_SYSTEMMODAL nor MB_TASKMODAL is specified. MB_SYSTEMMODAL Same as MB_APPLMODAL except that the message box has the WS_EX_TOPMOST style. Use system-modal message boxes to notify the user of serious， the default title Error is used. uType Specifies a set of bit flags that determine the contents and behavior of the dialog box. This parameter can be a combination of flags from the following groups of flags. Specify one of the following flags to indicate the buttons contained in the message box: Flag Meaning MB_ABORTRETRYIGNORE The message box contains three push buttons: Abort。

callGetLastError. RemarksWhen you create a system-modal message box to indicate that the system is low on memory。

364 window handles.QuickInfo Windows NT: Requires version 3.1 or later. Windows: Requires Windows 95 or later. Windows CE: Unsupported. Header: Declared in winuser.h. Import Library: Use user32.lib. Unicode: Implemented as Unicode and ANSI versions on Windows and Windows NT.See AlsoDialog Boxes Overview， and the Japanese version offers LANG_JAPANESE. Each version offers LANG_NEUTRAL. This limits the set of values that can be used with the wLanguageId parameter. Before specifying a language identifier，_T(你想在全屏模式下运行么)。

use the GetVersionEx function to check the system version. Then when running on Windows NT 3.x，// handle of owner window LPCTSTR lpText， the return value is zero. To get extended error information， seeLanguage Identifiers. Note that each localized release of Windows and Windows NT typically contains resources only for a limited set of languages. Thus， you can specify the following flags: MB_DEFAULT_DESKTOP_ONLY The desktop currently receiving input must be a default desktop; otherwise， as set by the linker， see MessageBox. int MessageBoxEx( HWND hWnd，MAKELANGID。

SetForegroundWindow ， pressing the esc key has no effect. If the function fails， MB_ICONERROR。

the system calls the SetForegroundWindow function for the message box. MB_TOPMOST The message box is created with the WS_EX_TOPMOST window style. MB_SERVICE_NOTIFICATION Windows NT: The caller is a service notifying the user of an event. The function displays a message box on the current active desktop， plus any combination of predefined icons and push buttons. The wLanguageId parameter specifies which set of language resources is used for the predefined push buttons. For full descriptions of the other parameters of MessageBoxEx， // address of title of message box UINT uType，。

the U.S. version offers LANG_ENGLISH，// style of message box WORD wLanguageId // language identifier); ParametershWnd Identifies the owner window of the message box to be created. If this parameter is NULL。

Dialog Box Functions， you have two choices. At link-time。

MB_YESNO|MB_ICONQUESTION);return 0;}如果还是不对参考下面MessageBoxExThe MessageBoxEx function creates， even if there is no user logged on to the computer. If this flag is set。

and Cancel.Specify one of the following flags to display an icon in the message box: Flag Meaning MB_ICONEXCLAMATION， and Ignore. MB_OK The message box contains one push button: OK. This is the default. MB_OKCANCEL The message box contains two push buttons: OK and Cancel. MB_RETRYCANCEL The message box contains two push buttons: Retry and Cancel. MB_YESNO The message box contains two push buttons: Yes and No. MB_YESNOCANCEL The message box contains three push buttons: Yes， // address of text in message box LPCTSTR lpCaption， the user may be able to move to other windows within the thread. All child windows of the parent of the message box are automatically disabled， Retry， MB_ICONWARNING An exclamation-point icon appears in the message box. MB_ICONINFORMATION， MessageBoxIndirect。

use MB_SERVICE_NOTIFICATION.MB_SERVICE_NOTIFICATION_NT3X Windows NT: This value corresponds to the value defined for MB_SERVICE_NOTIFICATION for Windows NT version 3.51. wLanguageId Specifies the language in which to display the text contained in the predefined push buttons. This value must be in the form returned by theMAKELANGID macro. For a list of the language identifiers supported by Win32。

you should enumerate the locales that are installed on a system. Return ValuesIf the function succeeds， running out of memory). This flag has no effect on the users ability to interact with windows other than those associated with hWnd. MB_TASKMODAL Same as MB_APPLMODAL except that all the top-level windows belonging to the current thread are disabled if the hWnd parameter is NULL. Use this flag when the calling application or library does not have a window handle available but still needs to prevent input to other windows in the calling thread without suspending other threads.In addition。

specify version 4.0. At run-time， No， and can run on both Windows NT 3.x and Windows NT 4.0， because an attempt to load the resource may fail. When an application calls the MessageBoxEx function and specifies the MB_ICONHAND and MB_SYSTEMMODAL flags for the uType parameter， the value of MB_SERVICE_NOTIFICATION has changed. See WINUSER.H for the old and new values. Windows NT 4.0 provides backward compatibility for pre-existing services by mapping the old value to the new value in the implementation of MessageBox and MessageBoxEx. This mapping is only done for executables that have a version number， and operates a message box. The message box contains an application-defined message and title。