我制作的软件的结构式这样的，首先一个单文档视图掉出一个对话框，对话框上有一个按钮“保存”，点了保存之后对话框的数据会保存入数据库，当保存完成或者失败我写了一个messagebox弹出来作提示。
现在的问题是我的messagebox每次弹出来的时候光响一下就找不到了，点了alt键才出现，后来后来发现时弹出来的时候没有显示在最上面，而是显示在了那个大对话框的后面了。请问这个问题怎么解决？
现在的问题是我的messagebox每次弹出来的时候光响一下就找不到了，点了alt键才出现，后来后来发现时弹出来的时候没有显示在最上面，而是显示在了那个大对话框的后面了。请问这个问题怎么解决？
如果是::MessageBox把句柄设置成主窗口或者程序中某个窗口，别设置成null
我写的是 AfxMessageBox（“数据库插入失败！”）；
LPCTSTR lpText,
LPCTSTR lpCaption,
UINT uType
);
uType
[in] Specifies the contents and behavior of the dialog box. This parameter can be a combination of flags from the following groups of flags.
To indicate the buttons displayed in the message box, specify one of the following values.
MB_ABORTRETRYIGNORE
The message box contains three push buttons: Abort, Retry, and Ignore.
MB_CANCELTRYCONTINUE
Microsoft Windows 2000/XP: The message box contains three push buttons: Cancel, Try Again, Continue. Use this message box type instead of MB_ABORTRETRYIGNORE.
MB_HELP
Windows 95/98/Me, Windows NT 4.0 and later: Adds a Help button to the message box. When the user clicks the Help button or presses F1, the system sends a WM_HELP message to the owner.
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, No, and Cancel.
To display an icon in the message box, specify one of the following values.
MB_ICONEXCLAMATION
An exclamation-point icon appears in the message box.
MB_ICONWARNING
An exclamation-point icon appears in the message box.
MB_ICONINFORMATION
An icon consisting of a lowercase letter i in a circle appears in the message box.
MB_ICONASTERISK
An icon consisting of a lowercase letter i in a circle appears in the message box.
MB_ICONQUESTION
A question- icon appears in the message box. The question message icon is no longer recommended because it does not clearly represent a specific type of message and because the phrasing of a message as a question could apply to any message type. In addition, users can confuse the message symbol question with Help information. Therefore, do not use this question message symbol in your message boxes. The system continues to support its inclusion only for backward compatibility.
MB_ICONSTOP
A stop-sign icon appears in the message box.
MB_ICONERROR
A stop-sign icon appears in the message box.
MB_ICONHAND
A stop-sign icon appears in the message box.
To indicate the default button, specify one of the following values.
MB_DEFBUTTON1
The first button is the default button.
MB_DEFBUTTON1 is the default unless MB_DEFBUTTON2, MB_DEFBUTTON3, 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.
To indicate the modality of the dialog box, specify one of the following values.
MB_APPLMODAL
The user must respond to the message box before continuing work in the window identified by the hWnd parameter. However, 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 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, 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, potentially damaging errors that require immediate attention (for example, running out of memory). This flag has no effect on the user's 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.
To specify other options, use one or more of the following values.
MB_DEFAULT_DESKTOP_ONLY
Windows NT/2000/XP: Same as MB_SERVICE_NOTIFICATION except that the system will display the message box only on the default desktop of the interactive window station. For more information, see Window Stations.
Windows NT 4.0 and earlier: If the current input desktop is not the default desktop, MessageBox fails. Windows 2000/XP: If the current input desktop is not the default desktop, MessageBox does not return until the user switches to the default desktop. Windows 95/98/Me: This flag has no effect.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, 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/2000/XP: The caller is a service notifying the user of an event. The function displays a message box on the current active desktop, even if there is no user logged on to the computer.
Terminal Services: If the calling thread has an impersonation token, the function directs the message box to the session specified in the impersonation token. If this flag is set, 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 more information on the changes between Microsoft Windows NT 3.51 and Windows NT 4.0, see Res.MB_SERVICE_NOTIFICATION_NT3X
Windows NT/2000/XP: This value corresponds to the value defined for MB_SERVICE_NOTIFICATION for Windows NT version 3.51.
For more information on the changes between Windows NT 3.51 and Windows NT 4.0, see Res.应用：
uType = MB_OK | MB_TOPMOST
程序实现了一个模拟按键功能，模拟按alt键，这样消息框弹出来后即使在最下面，也会被alt上来这也只是一种治标不治本的方法