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MSGBOXPARAMS info  Overview  Group

The MSGBOXPARAMS structure contains information used to display a message box. The MessageBoxIndirect function uses this structure.

typedef struct { 

    UINT      cbSize; 

    HWND      hwndOwner; 

    HINSTANCE hInstance; 

    LPCSTR    lpszText; 

    LPCSTR    lpszCaption; 

    DWORD     dwStyle; 

    LPCSTR    lpszIcon; 

    DWORD     dwContextHelpId; 

    MSGBOXCALLBACK lpfnMsgBoxCallback; 

    DWORD     dwLanguageId; 

} MSGBOXPARAMS, *PMSGBOXPARAMS, FAR *LPMSGBOXPARAMS; 

 

Members

cbSize
Specifies the structure size, in bytes.
hwndOwner
Identifies the owner window. This member can be NULL.
hInstance
Identifies the instance containing the icon resource identified by the lpszIcon member, and the string resource identified by the lpszText or lpszCaption member.
lpszText
Points to a null-terminated string, or the identifier of a string resource, that contains the message to be displayed.
lpszCaption
Points to a null-terminated string, or the identifier of a string resource, that contains the message box title. If this member is NULL, the default title Error is used.
dwStyle
Specifies a set of bit flags that determine the contents and behavior of the dialog box. This member can be a combination of flags described for the uType parameter of the MessageBoxEx function.

In addition, you can specify the MB_USERICON flag if you want the message box to display the icon specified by the lpszIcon member.

lpszIcon
Identifies an icon resource. This parameter can be either a null-terminated string or an integer resource identifier passed to the MAKEINTRESOURCE macro.

To load one of the Windows predefined icons, set the hInstance member to NULL and set lpszIcon to one of the values listed with the LoadIcon function.

This member is ignored if the dwStyle member does not specify the MB_USERICON flag.

dwContextHelpId
Identifies a Help context. If a Help event occurs, this value is specified in the HELPINFO structure that the message box sends to the owner window or callback function.
lpfnMsgBoxCallback
Points to the callback function that processes Help events for the message box. The callback function has the following form:
 

VOID CALLBACK MsgBoxCallback(LPHELPINFO lpHelpInfo); 

 

If this member is NULL, the message box sends WM_HELP messages to the owner window when help events occur.

dwLanguageId
Specifies the language in which to display the text contained in the predefined push buttons. This value must be in the form returned by the MAKELANGID macro.

For a list of the language identifiers supported by Win32, see Language Identifiers. Note that each localized release of Windows typically contains resources only for a limited set of languages. Thus, for example, the U.S. version offers LANG_ENGLISH, the French version offers LANG_FRENCH, the German version offers LANG_GERMAN, 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, you should enumerate the locales that are installed on a system.

See Also

HELPINFO, LoadIcon, MAKEINTRESOURCE, MAKELANGID, MessageBoxEx, MessageBoxIndirect, WM_HELP 


file: /Techref/os/win/api/win32/struc/src/str12_2.htm, 5KB, , updated: 2000/4/7 12:20, local time: 2022/5/27 05:12,
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