如何获得一个给定的HWND工具提示文本？ [英] How to get tooltip text for a given HWND?

问题描述

我正在寻找一种方式来获得工具提示控件（如果有的话），这是一个给定的HWND关联。工具提示控件的文本就足够了。我发现的最接近的就是 TTM_GETTEXT 消息的，但它意味着被发送到工具提示控制本身，而不是它的相关联的工具。我没有一个句柄工具提示控件虽然。是否有人知道如何做到这一点？

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 TTM_GETTEXT 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?

所有这一切都是在C ++中使用普通的Windows API来完成。

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

推荐答案

似乎没有成为一个特定的消息，以获得尖端或从控制它的文本，但是这是MFC的CWnd类是如何实现OnToolHitTest（）你应该能够适应的Win32：

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:

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 |= 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 |= TTF_NOTBUTTON|TTF_CENTERTIP;
        }
        return nHit;
    }
    return -1;  // not found
}

希望这将是有益的。

Hopefully this will be useful.

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