点击PropertySheet中的帮助按钮时，是怎么调用上下文帮助文档的？不是通过WinHelp()调用的。请对消息传递有研究的高手帮忙！

[nodefault]

点击PropertySheet中的帮助按钮时，是怎么调用上下文帮助文档的？不是通过WinHelp()调用的。请对消息传递有研究的高手帮忙！

我对以下程序单步跟踪时，点击PropertySheet中的“帮助”按钮时，进入下面函数（这时nID =9），然后进入MFC的CPropertySheet::OnCmdMsg(）（退出MFC后nID =57670）；再执行下面函数，然后进入MFC；再执行下面函数，然后进入MFC； 一共执行3次后才调用帮助文档。


BOOL CTndSheet::OnCmdMsg(UINT nID, int nCode, void* pExtra, AFX_CMDHANDLERINFO* pHandlerInfo)
{
if (nID == IDOK)
{
UpdateTestCaseInfo();
// 通知主窗口文档内容已经变更，关闭程序时需要保存
((CMainFrame*)AfxGetMainWnd())->GetActiveDocument()->SetModifiedFlag(TRUE);
}

return CPropertySheet::OnCmdMsg(nID, nCode, pExtra, pHandlerInfo);
}

能不能告诉我这是怎么把帮助按钮和帮助文档联系起来的？调用机制是什么？？
大家可以参照：
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/commctls/propsheet/propsheet.asp

[nodefault]

我是楼主！
taianmonkey给我的回答是：
Property sheets can display two Help buttons: a property sheet Help button that is displayed at the bottom of the frame, next to the OK/Cancel/Apply buttons, and a standard caption bar button that provides context-sensitive Help.
The property sheet Help button is optional, and can be enabled on a page by page basis. To display the property sheet Help button for one or more pages:
For each page that will display a Help button, set the PSP_HASHELP flag in the dwFlags member of the page's PROPSHEETPAGE structure.
When the user clicks the Help button, the active page receives a PSN_HELP notification message. The page must respond by displaying Help information, typically by calling the WinHelp function.

我的程序应该不是常规的调用WinHelp的方法了。谁能指点我，是怎么调用的？

[菜牛]

你可以看看这几个CWnd的成员函数：

Help Command Handlers and Functions

HtmlHelp Called to initiate the HTMLHelp application.
OnHelpFinder Handles the ID_HELP_FINDER and ID_DEFAULT_HELP commands.
OnHelpIndex Handles the ID_HELP_INDEX command and provides a default Help topic.
OnHelpUsing Handles the ID_HELP_USING command.
OnHelp Handles F1 Help within the application (using the current context).
WinHelp Called to initiate the WinHelp application.

[nodefault]

我的程序中不是用这几个函数调用帮助文档的。

[taianmonkey]

http://www.codeproject.com/property/EmbededPSContextHelp.asp

[nodefault]

好的！我看看。谢谢了！