blocks|key|383217|text|似乎没有特定的消息来从控件中获取提示或其文本，但这就是MFC的CWnd类实现OnToolHitTest()的方式，您应该能够适应Win32：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|383218|INT_PTR+SomeFunction(HWND+hWndChild,+TOOLINFO+*pTI)
{
++++if+(hWndChild+!=+NULL)+//+Your+HWND+being+tested
++++{
++++++++//+return+positive+hit+if+control+ID+isn't+-1
++++++++INT_PTR+nHit+=+_AfxGetDlgCtrlID(hWndChild);
++++++++//+Replace+with+GetDlgCtrlID().

++++++++//+hits+against+child+windows+always+center+the+tip
++++++++if+(pTI+!=+NULL+&&+pTI->cbSize+>=+sizeof(AFX_OLDTOOLINFO))
++++++++{
++++++++++++//+setup+the+TOOLINFO+structure
++++++++++++pTI->hwnd+=+m_hWnd;
++++++++++++pTI->uId+=+(UINT_PTR)hWndChild;
++++++++++++pTI->uFlags+%7C=+TTF_IDISHWND;
++++++++++++pTI->lpszText+=+LPSTR_TEXTCALLBACK;

++++++++++++//+set+TTF_NOTBUTTON+and+TTF_CENTERTIP+if+it+isn't+a+button
++++++++++++if+(!(::SendMessage(hWndChild,+WM_GETDLGCODE,+0,+0)+&+DLGC_BUTTON))
++++++++++++++++pTI->uFlags+%7C=+TTF_NOTBUTTON%7CTTF_CENTERTIP;
++++++++}
++++++++return+nHit;
++++}
++++return+-1;++//+not+found
}|code-block|syntax|javascript|383219|希望这将是有用的。|383220|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

There doesn't seem to be a specific message to get the tip or its text from the control, but this is how MFC's CWnd class implements OnToolHitTest(), which you should be able to adapt to Win32: 

<pre><code>INT_PTR SomeFunction(HWND hWndChild, TOOLINFO *pTI)
{
 if (hWndChild != NULL) // Your HWND being tested
 {
 // return positive hit if control ID isn't -1
 INT_PTR nHit = _AfxGetDlgCtrlID(hWndChild);
 // Replace with GetDlgCtrlID().

 // hits against child windows always center the tip
 if (pTI != NULL &amp;&amp; pTI-&gt;cbSize &gt;= sizeof(AFX_OLDTOOLINFO))
 {
 // setup the TOOLINFO structure
 pTI-&gt;hwnd = m_hWnd;
 pTI-&gt;uId = (UINT_PTR)hWndChild;
 pTI-&gt;uFlags |= TTF_IDISHWND;
 pTI-&gt;lpszText = LPSTR_TEXTCALLBACK;

 // set TTF_NOTBUTTON and TTF_CENTERTIP if it isn't a button
 if (!(::SendMessage(hWndChild, WM_GETDLGCODE, 0, 0) &amp; DLGC_BUTTON))
 pTI-&gt;uFlags |= TTF_NOTBUTTON|TTF_CENTERTIP;
 }
 return nHit;
 }
 return -1; // not found
}
</code></pre>

Hopefully this will be useful.

blocks|key|383227|text|要从某个控件获取工具提示文本，可以使用TTN_NEEDTEXT+message。它被设计为供ToolTip控件使用，但我看不出有任何理由不能从其他地方发送它。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|383228|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/bb760293%2528VS.85%2529.aspx^0|J|C|J|C|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@$9|Q|A|R|1|S]]|E|$]]|$1|F|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

To get tooltip text from some control you could use <a href="http://msdn.microsoft.com/en-us/library/bb760293%28VS.85%29.aspx" rel="nofollow noreferrer"><code>TTN_NEEDTEXT</code></a> message. It was designed to be used by the ToolTip control, but I cannot see any reason why you could not send it from other place.

blocks|key|380731|text|您可以枚举窗口，查找具有所需窗口的父级的工具提示控件。您需要提供窗口和工具id+(通常来自GetDlgCtrlID)...：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|380732|HWND+hToolTipWnd+=+NULL;

BOOL+GetToolTipText(HWND+hWnd,+UINT+nId,+std::wstring&+strTooltip)
{
++++hToolTipWnd+=+NULL;
++++EnumWindows(FindToolTip,+(LPARAM)hWnd);

++++if+(hToolTipWnd+==+NULL)
++++++++return+FALSE;

++++WCHAR+szToolText[256];
++++TOOLINFO+ti;
++++ti.cbSize+=+sizeof(ti);
++++ti.hwnd+=+hWnd;
++++ti.uId+=+nId;
++++ti.lpszText+=+szToolText;

++++SendMessage(hToolTipWnd,+TTM_GETTEXT,+256,+(LPARAM)&ti);
++++strTooltip+=+szToolText;

++++return+TRUE;
}

BOOL+CALLBACK+FindToolTip(HWND+hWnd,+LPARAM+lParam)
{
++++WCHAR+szClassName[256];
++++if+(GetClassName(hWnd,+szClassName,+256)+==+0)
++++++++return+TRUE;

++++if+(wcscmp(szClassName,+L"tooltips_class32")+!=+0)
++++++++return+TRUE;
++++if+(GetParent(hWnd)+!=+(HWND)lParam)
++++++++return+TRUE;

++++hToolTipWnd+=+hWnd;

++++return+FALSE;
}|code-block|syntax|javascript|380733|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/ms645478%2528VS.85%2529.aspx^0|19|C|19|C|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@$9|V|A|W|1|X]]|E|$]]|$1|F|3|G|5|H|7|Y|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]]]

You could enumerate the windows looking for a tooltip control that has a parent of the required window. You'll need to supply the window together with the tool id (normally from <a href="http://msdn.microsoft.com/en-us/library/ms645478%28VS.85%29.aspx" rel="nofollow noreferrer"><code>GetDlgCtrlID</code></a>)...:

<pre><code>HWND hToolTipWnd = NULL;

BOOL GetToolTipText(HWND hWnd, UINT nId, std::wstring&amp; strTooltip)
{
 hToolTipWnd = NULL;
 EnumWindows(FindToolTip, (LPARAM)hWnd);

 if (hToolTipWnd == NULL)
 return FALSE;

 WCHAR szToolText[256];
 TOOLINFO ti;
 ti.cbSize = sizeof(ti);
 ti.hwnd = hWnd;
 ti.uId = nId;
 ti.lpszText = szToolText;

 SendMessage(hToolTipWnd, TTM_GETTEXT, 256, (LPARAM)&amp;ti);
 strTooltip = szToolText;

 return TRUE;
}

BOOL CALLBACK FindToolTip(HWND hWnd, LPARAM lParam)
{
 WCHAR szClassName[256];
 if (GetClassName(hWnd, szClassName, 256) == 0)
 return TRUE;

 if (wcscmp(szClassName, L"tooltips_class32") != 0)
 return TRUE;
 if (GetParent(hWnd) != (HWND)lParam)
 return TRUE;

 hToolTipWnd = hWnd;

 return FALSE;
}
</code></pre>

blocks|key|3350348|text|我不知道您要检索其工具提示的窗口是否是您创建的窗口的子级。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3350349|如果是这种情况，您可以处理NM_TOOLTIPSCREATED通知，它在子窗口创建工具提示时由子窗口发送给其父窗口(或者应该发送:对于公共控件是真的，但对于其他类型的窗口就不是这样了)。此通知包括工具提示窗口的句柄。|3350350|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I don't know if the window whose tooltip you want to retrieve is a child of a window you have created.

If this is the case, you can handle the NM_TOOLTIPSCREATED notification, which is sent by a child window to its parent when it creates a tooltip (or should be sent: it is true for common controls but I don't know for other kinds of windows). This notification includes a handle to the tooltip window.

I'm looking for a way to get the tooltip control (if any) which is associated with a given HWND. The text of the tooltip control would be sufficient, too. The closest thing I found is the <a href="http://msdn.microsoft.com/en-us/library/bb760393%28VS.85%29.aspx" rel="nofollow noreferrer">TTM_GETTEXT</a> message, but it's meant to be sent to the tooltip control itself instead of the tool it's associated with. I don't have a handle to the tooltip control though. Does anybody know how to do this?

All this is done using plain Windows API in C++.

How to get tooltip text for a given HWND?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在寻找一种方法来获得工具提示控件(如果有)，这是与给定的HWND相关联的。工具提示控件的文本也足够了。我找到的最接近的消息是消息，但它应该发送到工具提示控件本身，而不是与之关联的工具。不过，我没有工具提示控件的句柄。有人知道怎么做吗？所有这些都是在C++中使用纯Windows API完成的。

问如何获取给定HWND的工具提示文本？
EN

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问如何获取给定HWND的工具提示文本？EN