Hello

There are some tabbed MDI child window. When mouse is moved onto the tab of MDI child window,  the tooltip (example: full path of file ) is displayed, Now I want to change the content of tooltip, Please help me how to do? Thank you.

-Freehawk

Hi,

Option 1.

Override

virtual CString CXTPTabClientWnd::GetItemTooltip(const CXTPTabManagerItem* pItem) const;

and return tooltip you need.

Option 2.

catch WM_XTP_GETWINDOWTOOLTIP in CChildFrm and return

LPCTSTR string with tooltip.

How to change the tooltip?

The following way is "How to get the tooltip".

oleg wrote: Hi, Option 1. Override virtual CString CXTPTabClientWnd::GetItemTooltip(const CXTPTabManagerItem* pItem) const; and return tooltip you need.   Option 2. catch WM_XTP_GETWINDOWTOOLTIP in CChildFrm and return LPCTSTR string with tooltip.

in CChildFrame.h add new member CString m_strCurrentTooltip.

- to change it call

m_strCurrentTooltip = "New Tooltip".

- to get it use "option 2"

To clarify a bit, I asssume Oleg means to do the following:

A) Add the class variable m_strCurrentTooltip to the CMDIChildWnd-derived child frame class for the doc/view template to store the text for the tooltip.

B) Install a message handler to trap the WM_XTP_GETWINDOWTOOLTIP message in the ChildFrm class and return the value of the m_strCurrentTooltip variable. (The message is issued by CXTPTabClientWnd::GetItemTooltip() which is used by the XTP framework to get the tooltip text before setting it, so while it seems like a "Get" method, it behaves as a "Set" method in this case.)

Code as follows:

In the "MyChildFrm.h" file include the following:

    CString m_strCurrentTooltip;

and, define the message handler:

protected:

    afx_msg LRESULT OnGetItemTooltip(WPARAM wParam, LPARAM lParam);

    DECLARE_MESSAGE_MAP()

In the "YourChildFrm.cpp" file include the following:

BEGIN_MESSAGE_MAP(MyChildFrm, CMDIChildWnd)
    ON_MESSAGE(WM_XTP_GETWINDOWTOOLTIP, OnGetItemTooltip)
END_MESSAGE_MAP()
 
/*
* Example: Change the tooltip from the full path of the 
* document file (default) to the document title.
*/
LRESULT CTextEditCFrm::OnGetItemTooltip(WPARAM wParam, LPARAM lParam) 
{
    if (m_strCurrentTooltip.IsEmpty())

        m_strCurrentTooltip = this->GetActiveDocument()->GetTitle();

    return (LRESULT) (LPCTSTR) m_strCurrentTooltip;

}

I hope that helps. (Oleg's posts have saved me countless hours... )

Jay