为什么Popup Menu不会消失？

[leng]

我把对话框最小化成windows右下角的图标，当鼠标对准图标按下鼠标右键时，会弹出Popup

Menu,但我在window的桌面上按鼠标时，Popup Menu不会消失，Why?
请各位高手帮老弟一把，非常感谢！

[longx]

你需要在弹出菜单前将程序窗口设置成最前端窗口，用SetForegroundWindow()

[xubin_sh]

PRB: Menus for Notification Icons Do Not Work Correctly
ID: Q135788



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The information in this article applies to:

Microsoft Win32 Software Development Kit (SDK)

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SYMPTOMS
When you display a context menu for a notification icon (see Shell_NotifyIcon), clicking anywhere besides the menu or the window that created the menu (if it is visible) doesn't cause the menu to disappear. When this behavior is corrected, the second time this menu is displayed, it displays and then immediately disappears.



RESOLUTION
To correct the first behavior, you need to make the current window the foreground window before calling TrackPopupMenu or TrackPopupMenuEx.

The second problem is caused by a problem with TrackPopupMenu. It is necessary to force a task switch to the application that called TrackPopupMenu at some time in the near future. This can be accomplished by posting a benign message to the window or thread.

The following code will take care of all of this:


SetForegroundWindow(hDlg);

// Display the menu
TrackPopupMenu( hSubMenu,
TPM_RIGHTBUTTON,
pt.x,
pt.y,
0,
hDlg,
NULL);

PostMessage(hDlg, WM_NULL, 0, 0);



STATUS
This behavior is by design.

Additional query words:

Keywords : kbcode kbLib kbMenu kbNTOS400 kbWinOS95 kbWinOS98 kbshell
Version : WINDOWS:
Platform : WINDOWS
Issue type : kbprb



Last Reviewed: January 6, 2000
© 2000 Microsoft Corporation. All rights reserved. Terms of Use.




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[zzh]

在OnContexMenu函数中，参考如下代码：
if (point.x == -1 && point.y == -1){
//keystroke invocation
CRect rect;
GetClientRect(rect);
ClientToScreen(rect);

point = rect.TopLeft();
point.Offset(5, 5);
}

CMenu menu;
VERIFY(menu.LoadMenu(IDR_POPUP_MENU));
menu.SetMenuItemBitmaps(ID_POP_CONNECT,MF_BYCOMMAND,&bitmapConnectServer,&bitmapConnectServer);
menu.SetMenuItemBitmaps(ID_POP_LOGIN,MF_BYCOMMAND,&bitmapLogin,&bitmapLogin);
menu.SetMenuItemBitmaps(ID_POP_LOGOUT,MF_BYCOMMAND,&bitmapLogout,&bitmapLogout);
menu.SetMenuItemBitmaps(ID_POP_RUN,MF_BYCOMMAND,&bitmapRun,&bitmapRun);
menu.SetMenuItemBitmaps(ID_POP_CLOSE,MF_BYCOMMAND,&bitmapExit,&bitmapExit);

CMenu* pPopup = menu.GetSubMenu(0);
ASSERT(pPopup != NULL);
CWnd* pWndPopupOwner = this;

while (pWndPopupOwner->GetStyle() & WS_CHILD)
pWndPopupOwner = pWndPopupOwner->GetParent();
SetForegroundWindow();
pPopup->TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON, point.x, point.y,
pWndPopupOwner);
PostMessage(WM_NULL,0,0);
其中函数SetForegroundWindow()一定要加上。你没有加上这个函数，所以出现这个问题。我也碰到过，如果还有问题，来EMAIL：[e-mail]