Enable variadic macros for VC9 and later.

[wxWidgets.git] / src / msw / tooltip.cpp

diff --git a/src/msw/tooltip.cpp b/src/msw/tooltip.cpp
index f805bf6e754e8a2760ec276df609ab32c2bfb61e..23ad01cbd4c9e07e3a0c2ad016ed14be3722a0e7 100644 (file)
--- a/src/msw/tooltip.cpp
+++ b/src/msw/tooltip.cpp
@@ -1,12 +1,12 @@
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////

-// Name:        msw/tooltip.cpp
+// Name:        src/msw/tooltip.cpp

 // Purpose:     wxToolTip class implementation for MSW
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     31.01.99
 // RCS-ID:      $Id$
 // Copyright:   (c) 1999 Vadim Zeitlin
 // Purpose:     wxToolTip class implementation for MSW
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     31.01.99
 // RCS-ID:      $Id$
 // Copyright:   (c) 1999 Vadim Zeitlin

-// Licence:     wxWindows license
+// Licence:     wxWindows licence

 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================


@@ -23,89 +23,237 @@
     #pragma hdrstop
 #endif
 
     #pragma hdrstop
 #endif
 

-#ifndef WX_PRECOMP
-    #include "wx/wx.h"
-#endif
-

 #if wxUSE_TOOLTIPS
 
 #include "wx/tooltip.h"
 #if wxUSE_TOOLTIPS
 
 #include "wx/tooltip.h"

+
+#ifndef WX_PRECOMP
+    #include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
+    #include "wx/app.h"
+    #include "wx/control.h"
+#endif
+
+#include "wx/tokenzr.h"
+#include "wx/vector.h"

 #include "wx/msw/private.h"
 
 #include "wx/msw/private.h"
 

-#if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
-#include <commctrl.h>
+#ifndef TTTOOLINFO_V1_SIZE
+    #define TTTOOLINFO_V1_SIZE 0x28

 #endif
 
 #endif
 

-HWND wxToolTip::hwndTT = NULL;
+#ifndef TTF_TRANSPARENT
+    #define TTF_TRANSPARENT 0x0100
+#endif
+
+// VZ: normally, the trick with subclassing the tooltip control and processing
+//     TTM_WINDOWFROMPOINT should work but, somehow, it doesn't. I leave the
+//     code here for now (but it's not compiled) in case we need it later.
+//
+//     For now I use an ugly workaround and process TTN_NEEDTEXT directly in
+//     radio button wnd proc - fixing TTM_WINDOWFROMPOINT code would be nice
+//     because it would then work for all controls, not only radioboxes but for
+//     now I don't understand what's wrong with it...
+#define wxUSE_TTM_WINDOWFROMPOINT   0
+
+// ----------------------------------------------------------------------------
+// global variables
+// ----------------------------------------------------------------------------
+
+// the tooltip parent window
+WXHWND wxToolTip::ms_hwndTT = (WXHWND)NULL;
+
+// new tooltip maximum width, default value is set on first call to wxToolTip::Add()
+int wxToolTip::ms_maxWidth = 0;
+
+#if wxUSE_TTM_WINDOWFROMPOINT
+
+// the tooltip window proc
+static WNDPROC gs_wndprocToolTip = (WNDPROC)NULL;
+
+#endif // wxUSE_TTM_WINDOWFROMPOINT

 
 // ----------------------------------------------------------------------------
 // private classes
 // ----------------------------------------------------------------------------
 
 
 // ----------------------------------------------------------------------------
 // private classes
 // ----------------------------------------------------------------------------
 

+// This is simply a wrapper for vector<HWND> but defined as a class to hide the
+// details from the public header.
+class wxToolTipOtherWindows : public wxVector<WXHWND>
+{
+};
+
+// a wrapper around TOOLINFO Win32 structure
+#ifdef __VISUALC__
+    #pragma warning( disable : 4097 ) // we inherit from a typedef - so what?
+#endif

 
 

-// a simple wrapper around TOOLINFO Win32 structure
-#pragma warning( disable : 4097 )

 class wxToolInfo : public TOOLINFO
 {
 public:
 class wxToolInfo : public TOOLINFO
 {
 public:

-    wxToolInfo(wxWindow *win)
+    wxToolInfo(HWND hwndOwner, unsigned int id, const wxRect& rc)

     {
         // initialize all members
     {
         // initialize all members

-#ifdef __GNUWIN32__ && !defined(wxUSE_NORLANDER_HEADERS)
-        memset(this, 0, sizeof(TOOLINFO));
-#else

         ::ZeroMemory(this, sizeof(TOOLINFO));
         ::ZeroMemory(this, sizeof(TOOLINFO));

-#endif

 
 

-        cbSize = sizeof(TOOLINFO);
-        uFlags = TTF_IDISHWND;
-        uId = (UINT)win->GetHWND();
+        // the structure TOOLINFO has been extended with a 4 byte field in
+        // version 4.70 of comctl32.dll and another one in 5.01 but we don't
+        // use these extended fields so use the old struct size to ensure that
+        // the tooltips work on old (Windows 95) systems too
+        cbSize = TTTOOLINFO_V1_SIZE;
+
+        hwnd = hwndOwner;
+
+        if (rc.IsEmpty())
+        {
+            uFlags = TTF_IDISHWND;
+            uId = (UINT_PTR)hwndOwner;
+        }
+        else
+        {
+            // this tooltip must be shown only if the mouse hovers a specific rect
+            // of the hwnd parameter!
+            rect.left = rc.GetLeft();
+            rect.right = rc.GetRight();
+            rect.top = rc.GetTop();
+            rect.bottom = rc.GetBottom();
+
+            // note that not setting TTF_IDISHWND from the uFlags member means that the
+            // ti.uId field should not contain the HWND but rather as MSDN says an
+            // "Application-defined identifier of the tool"; this is used internally by
+            // Windows to distinguish the different tooltips attached to the same window
+            uId = id;
+        }
+
+        // we use TTF_TRANSPARENT to fix a problem which arises at least with
+        // the text controls but may presumably happen with other controls
+        // which display the tooltip at mouse position: it can start flashing
+        // then as the control gets "focus lost" events and dismisses the
+        // tooltip which then reappears because mouse remains hovering over the
+        // control, see SF patch 1821229
+        if ( wxApp::GetComCtl32Version() >= 470 )
+        {
+            uFlags |= TTF_TRANSPARENT;
+        }

     }
 };
     }
 };

-#pragma warning( default : 4097 )
+
+#ifdef __VISUALC__
+    #pragma warning( default : 4097 )
+#endif

 
 // ----------------------------------------------------------------------------
 // private functions
 // ----------------------------------------------------------------------------
 
 
 // ----------------------------------------------------------------------------
 // private functions
 // ----------------------------------------------------------------------------
 

-// send a message to the tooltip control
-inline LRESULT SendTooltipMessage(WXHWND hwnd,
-                                  UINT msg,
-                                  WPARAM wParam,
-                                  void *lParam)
+// send a message to the tooltip control if it exists
+//
+// NB: wParam is always 0 for the TTM_XXX messages we use
+static inline LRESULT SendTooltipMessage(WXHWND hwnd, UINT msg, void *lParam)

 {
 {

-    return hwnd ? ::SendMessage((HWND)hwnd, msg, wParam, (LPARAM)lParam)
-                : 0;
+    return hwnd ? ::SendMessage((HWND)hwnd, msg, 0, (LPARAM)lParam) : 0;

 }
 
 // send a message to all existing tooltip controls
 }
 
 // send a message to all existing tooltip controls

-static void SendTooltipMessageToAll(WXHWND hwnd,
-                                    UINT msg, 
-                                    WPARAM wParam, 
-                                    LPARAM lParam)
+static inline void
+SendTooltipMessageToAll(WXHWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)

 {
 {

-   if ( hwnd )
-     (void)SendTooltipMessage((WXHWND)hwnd, msg, wParam, (void *)lParam);
+    if ( hwnd )
+        ::SendMessage((HWND)hwnd, msg, wParam, lParam);

 }
 
 // ============================================================================
 // implementation
 // ============================================================================
 
 }
 
 // ============================================================================
 // implementation
 // ============================================================================
 

+#if wxUSE_TTM_WINDOWFROMPOINT
+

 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------

-// static functions
+// window proc for our tooltip control

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

+LRESULT APIENTRY wxToolTipWndProc(HWND hwndTT,
+                                  UINT msg,
+                                  WPARAM wParam,
+                                  LPARAM lParam)
+{
+    if ( msg == TTM_WINDOWFROMPOINT )
+    {
+        LPPOINT ppt = (LPPOINT)lParam;
+
+        // the window on which event occurred
+        HWND hwnd = ::WindowFromPoint(*ppt);
+
+        OutputDebugString("TTM_WINDOWFROMPOINT: ");
+        OutputDebugString(wxString::Format("0x%08x => ", hwnd));
+
+        // return a HWND corresponding to a wxWindow because only wxWidgets are
+        // associated with tooltips using TTM_ADDTOOL
+        wxWindow *win = wxGetWindowFromHWND((WXHWND)hwnd);
+
+        if ( win )
+        {
+            hwnd = GetHwndOf(win);
+            OutputDebugString(wxString::Format("0x%08x\r\n", hwnd));
+
+#if 0
+            // modify the point too!
+            RECT rect;
+            GetWindowRect(hwnd, &rect);
+
+            ppt->x = (rect.right - rect.left) / 2;
+            ppt->y = (rect.bottom - rect.top) / 2;
+#endif // 0
+            return (LRESULT)hwnd;
+        }
+        else
+        {
+            OutputDebugString("no window\r\n");
+        }
+    }
+
+    return ::CallWindowProc(CASTWNDPROC gs_wndprocToolTip, hwndTT, msg, wParam, lParam);
+}
+
+#endif // wxUSE_TTM_WINDOWFROMPOINT

 
 

+// ----------------------------------------------------------------------------
+// static functions
+// ----------------------------------------------------------------------------

 
 void wxToolTip::Enable(bool flag)
 {
 
 void wxToolTip::Enable(bool flag)
 {

-    SendTooltipMessageToAll((WXHWND)hwndTT,TTM_ACTIVATE, flag, 0);
+    // Make sure the tooltip has been created
+    (void) GetToolTipCtrl();
+
+    SendTooltipMessageToAll(ms_hwndTT, TTM_ACTIVATE, flag, 0);

 }
 
 void wxToolTip::SetDelay(long milliseconds)
 {
 }
 
 void wxToolTip::SetDelay(long milliseconds)
 {

-    SendTooltipMessageToAll((WXHWND)hwndTT,TTM_SETDELAYTIME, TTDT_INITIAL, milliseconds);
+    // Make sure the tooltip has been created
+    (void) GetToolTipCtrl();
+
+    SendTooltipMessageToAll(ms_hwndTT, TTM_SETDELAYTIME,
+                            TTDT_INITIAL, milliseconds);
+}
+
+void wxToolTip::SetAutoPop(long milliseconds)
+{
+    SendTooltipMessageToAll(ms_hwndTT, TTM_SETDELAYTIME,
+                            TTDT_AUTOPOP, milliseconds);
+}
+
+void wxToolTip::SetReshow(long milliseconds)
+{
+    SendTooltipMessageToAll(ms_hwndTT, TTM_SETDELAYTIME,
+                            TTDT_RESHOW, milliseconds);
+}
+
+void wxToolTip::SetMaxWidth(int width)
+{
+    wxASSERT_MSG( width == -1 || width >= 0, wxT("invalid width value") );
+
+    ms_maxWidth = width;

 }
 
 // ---------------------------------------------------------------------------
 }
 
 // ---------------------------------------------------------------------------


@@ -113,54 +261,235 @@ void wxToolTip::SetDelay(long milliseconds)
 // ---------------------------------------------------------------------------
 
 // create the tooltip ctrl for our parent frame if it doesn't exist yet
 // ---------------------------------------------------------------------------
 
 // create the tooltip ctrl for our parent frame if it doesn't exist yet

+/* static */

 WXHWND wxToolTip::GetToolTipCtrl()
 {
 WXHWND wxToolTip::GetToolTipCtrl()
 {

-    if ( !hwndTT )
+    if ( !ms_hwndTT )

     {
     {

-        hwndTT = ::CreateWindow(TOOLTIPS_CLASS,
-                                (LPSTR)NULL,
-                                TTS_ALWAYSTIP,
-                                CW_USEDEFAULT, CW_USEDEFAULT,
-                                CW_USEDEFAULT, CW_USEDEFAULT,
-                                NULL, (HMENU)NULL,
-                                wxGetInstance(), NULL);
+        WXDWORD exflags = 0;
+        if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
+        {
+            exflags |= WS_EX_LAYOUTRTL;
+        }
+
+        // we want to show the tooltips always (even when the window is not
+        // active) and we don't want to strip "&"s from them
+        ms_hwndTT = (WXHWND)::CreateWindowEx(exflags,
+                                             TOOLTIPS_CLASS,
+                                             (LPCTSTR)NULL,
+                                             TTS_ALWAYSTIP | TTS_NOPREFIX,
+                                             CW_USEDEFAULT, CW_USEDEFAULT,
+                                             CW_USEDEFAULT, CW_USEDEFAULT,
+                                             NULL, (HMENU)NULL,
+                                             wxGetInstance(),
+                                             NULL);
+       if ( ms_hwndTT )
+       {
+           HWND hwnd = (HWND)ms_hwndTT;
+           SetWindowPos(hwnd, HWND_TOPMOST, 0, 0, 0, 0,
+                        SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
+
+#if wxUSE_TTM_WINDOWFROMPOINT
+           // subclass the newly created control
+           gs_wndprocToolTip = wxSetWindowProc(hwnd, wxToolTipWndProc);
+#endif // wxUSE_TTM_WINDOWFROMPOINT
+       }

     }
 
     }
 

-    return (WXHWND)hwndTT;
+    return ms_hwndTT;

 }
 
 }
 

+/* static */

 void wxToolTip::RelayEvent(WXMSG *msg)
 {
 void wxToolTip::RelayEvent(WXMSG *msg)
 {

-    (void)SendTooltipMessage(GetToolTipCtrl(), TTM_RELAYEVENT, 0, msg);
+    (void)SendTooltipMessage(GetToolTipCtrl(), TTM_RELAYEVENT, msg);

 }
 
 // ----------------------------------------------------------------------------
 // ctor & dtor
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // ctor & dtor
 // ----------------------------------------------------------------------------
 

+IMPLEMENT_ABSTRACT_CLASS(wxToolTip, wxObject)
+

 wxToolTip::wxToolTip(const wxString &tip)
          : m_text(tip)
 {
     m_window = NULL;
 wxToolTip::wxToolTip(const wxString &tip)
          : m_text(tip)
 {
     m_window = NULL;

+    m_others = NULL;
+
+    // make sure m_rect.IsEmpty() == true
+    m_rect.SetWidth(0);
+    m_rect.SetHeight(0);
+
+    // since m_rect is not valid, m_id is ignored by wxToolInfo ctor...
+    m_id = 0;
+}
+
+wxToolTip::wxToolTip(wxWindow* win, unsigned int id, const wxString &tip, const wxRect& rc)
+         : m_text(tip), m_rect(rc), m_id(id)
+{
+    m_window = NULL;
+    m_others = NULL;
+
+    SetWindow(win);

 }
 
 wxToolTip::~wxToolTip()
 {
 }
 
 wxToolTip::~wxToolTip()
 {

-    // there is no need to Remove() this tool - it will be done automatically
-    // anyhow
+    // the tooltip has to be removed before deleting. Otherwise, if it is visible
+    // while being deleted, there will be a delay before it goes away.
+    Remove();
+
+    delete m_others;

 }
 
 // ----------------------------------------------------------------------------
 // others
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // others
 // ----------------------------------------------------------------------------
 

+/* static */
+void wxToolTip::Remove(WXHWND hWnd, unsigned int id, const wxRect& rc)
+{
+    wxToolInfo ti((HWND)hWnd, id, rc);
+
+    (void)SendTooltipMessage(GetToolTipCtrl(), TTM_DELTOOL, &ti);
+}
+
+void wxToolTip::DoRemove(WXHWND hWnd)
+{
+    if ( m_window && hWnd == m_window->GetHWND() )
+    {
+        // Remove the tooltip from the main window.
+        Remove(hWnd, m_id, m_rect);
+    }
+    else
+    {
+        // Not really sure what to pass to remove in this case...
+        Remove(hWnd, 0, wxRect());
+    }
+}
+

 void wxToolTip::Remove()
 {
 void wxToolTip::Remove()
 {

-    // remove this tool from the tooltip control
-    if ( m_window )
+    DoForAllWindows(&wxToolTip::DoRemove);
+}
+
+void wxToolTip::AddOtherWindow(WXHWND hWnd)
+{
+    if ( !m_others )
+        m_others = new wxToolTipOtherWindows;
+
+    m_others->push_back(hWnd);
+
+    DoAddHWND(hWnd);
+}
+
+void wxToolTip::DoAddHWND(WXHWND hWnd)
+{
+    HWND hwnd = (HWND)hWnd;
+
+    wxToolInfo ti(hwnd, m_id, m_rect);
+
+    // another possibility would be to specify LPSTR_TEXTCALLBACK here as we
+    // store the tooltip text ourselves anyhow, and provide it in response to
+    // TTN_NEEDTEXT (sent via WM_NOTIFY), but then we would be limited to 79
+    // character tooltips as this is the size of the szText buffer in
+    // NMTTDISPINFO struct -- and setting the tooltip here we can have tooltips
+    // of any length
+    ti.hwnd = hwnd;
+    ti.lpszText = const_cast<wxChar *>(m_text.wx_str());
+
+    if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, &ti) )

     {
     {

-        wxToolInfo ti(m_window);
-        (void)SendTooltipMessage(GetToolTipCtrl(), TTM_DELTOOL, 0, &ti);
+        wxLogDebug(wxT("Failed to create the tooltip '%s'"), m_text.c_str());
+
+        return;
+    }
+
+#ifdef TTM_SETMAXTIPWIDTH
+    if ( wxApp::GetComCtl32Version() >= 470 )
+    {
+        // use TTM_SETMAXTIPWIDTH to make tooltip multiline using the
+        // extent of its first line as max value
+        HFONT hfont = (HFONT)
+            SendTooltipMessage(GetToolTipCtrl(), WM_GETFONT, 0);
+
+        if ( !hfont )
+        {
+            hfont = (HFONT)GetStockObject(DEFAULT_GUI_FONT);
+            if ( !hfont )
+            {
+                wxLogLastError(wxT("GetStockObject(DEFAULT_GUI_FONT)"));
+            }
+        }
+
+        MemoryHDC hdc;
+        if ( !hdc )
+        {
+            wxLogLastError(wxT("CreateCompatibleDC(NULL)"));
+        }
+
+        if ( !SelectObject(hdc, hfont) )
+        {
+            wxLogLastError(wxT("SelectObject(hfont)"));
+        }
+
+        // find the width of the widest line
+        int maxWidth = 0;
+        wxStringTokenizer tokenizer(m_text, wxT("\n"));
+        while ( tokenizer.HasMoreTokens() )
+        {
+            const wxString token = tokenizer.GetNextToken();
+
+            SIZE sz;
+            if ( !::GetTextExtentPoint32(hdc, token.wx_str(),
+                                         token.length(), &sz) )
+            {
+                wxLogLastError(wxT("GetTextExtentPoint32"));
+            }
+
+            if ( sz.cx > maxWidth )
+                maxWidth = sz.cx;
+        }
+
+        // limit size to ms_maxWidth, if set
+        if ( ms_maxWidth == 0 )
+        {
+            // this is more or less arbitrary but seems to work well
+            static const int DEFAULT_MAX_WIDTH = 400;
+
+            ms_maxWidth = wxGetClientDisplayRect().width / 2;
+
+            if ( ms_maxWidth > DEFAULT_MAX_WIDTH )
+                ms_maxWidth = DEFAULT_MAX_WIDTH;
+        }
+
+        if ( ms_maxWidth != -1 && maxWidth > ms_maxWidth )
+            maxWidth = ms_maxWidth;
+
+        // only set a new width if it is bigger than the current setting:
+        // otherwise adding a tooltip with shorter line(s) than a previous
+        // one would result in breaking the longer lines unnecessarily as
+        // all our tooltips share the same maximal width
+        if ( maxWidth > SendTooltipMessage(GetToolTipCtrl(),
+                                           TTM_GETMAXTIPWIDTH, 0) )
+        {
+            SendTooltipMessage(GetToolTipCtrl(), TTM_SETMAXTIPWIDTH,
+                               wxUIntToPtr(maxWidth));
+        }
+    }
+    else
+#endif // TTM_SETMAXTIPWIDTH
+    {
+        // replace the '\n's with spaces because otherwise they appear as
+        // unprintable characters in the tooltip string
+        m_text.Replace(wxT("\n"), wxT(" "));
+        ti.lpszText = const_cast<wxChar *>(m_text.wx_str());
+
+        if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, &ti) )
+        {
+            wxLogDebug(wxT("Failed to create the tooltip '%s'"), m_text.c_str());
+        }

     }
 }
 
     }
 }
 


@@ -170,36 +499,87 @@ void wxToolTip::SetWindow(wxWindow *win)
 
     m_window = win;
 
 
     m_window = win;
 

+    // add the window itself

     if ( m_window )
     {
     if ( m_window )
     {

-        wxToolInfo ti(m_window);
-
-        // as we store our text anyhow, it seems useless to waste system memory
-        // by asking the tooltip ctrl to remember it too - instead it will send
-        // us TTN_NEEDTEXT (via WM_NOTIFY) when it is about to be shown
-        ti.hwnd = (HWND)m_window->GetHWND();
-        ti.lpszText = LPSTR_TEXTCALLBACK;
-        // instead of: ti.lpszText = (char *)m_text.c_str();
-
-        if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, 0, &ti) )
+        DoAddHWND(m_window->GetHWND());
+    }
+#if !defined(__WXUNIVERSAL__)
+    // and all of its subcontrols (e.g. radio buttons in a radiobox) as well
+    wxControl *control = wxDynamicCast(m_window, wxControl);
+    if ( control )
+    {
+        const wxArrayLong& subcontrols = control->GetSubcontrols();
+        size_t count = subcontrols.GetCount();
+        for ( size_t n = 0; n < count; n++ )

         {
         {

-            wxLogSysError(_("Failed to create the tooltip '%s'"),
-                          m_text.c_str());
+            int id = subcontrols[n];
+            HWND hwnd = GetDlgItem(GetHwndOf(m_window), id);
+            if ( !hwnd )
+            {
+                // maybe it's a child of parent of the control, in fact?
+                // (radiobuttons are subcontrols, i.e. children of the radiobox
+                // for wxWidgets but are its siblings at Windows level)
+                hwnd = GetDlgItem(GetHwndOf(m_window->GetParent()), id);
+            }
+
+            // must have it by now!
+            wxASSERT_MSG( hwnd, wxT("no hwnd for subcontrol?") );
+
+            AddOtherWindow((WXHWND)hwnd);

         }
     }
         }
     }

+#endif // !defined(__WXUNIVERSAL__)
+}
+
+void wxToolTip::SetRect(const wxRect& rc)
+{
+    m_rect = rc;
+
+    if ( m_window )
+    {
+        wxToolInfo ti(GetHwndOf(m_window), m_id, m_rect);
+        (void)SendTooltipMessage(GetToolTipCtrl(), TTM_NEWTOOLRECT, &ti);
+    }

 }
 
 void wxToolTip::SetTip(const wxString& tip)
 {
     m_text = tip;
 
 }
 
 void wxToolTip::SetTip(const wxString& tip)
 {
     m_text = tip;
 

+    DoForAllWindows(&wxToolTip::DoSetTip);
+}
+
+void wxToolTip::DoSetTip(WXHWND hWnd)
+{
+    // update the tip text shown by the control
+    wxToolInfo ti((HWND)hWnd, m_id, m_rect);
+
+    // for some reason, changing the tooltip text directly results in
+    // repaint of the controls under it, see #10520 -- but this doesn't
+    // happen if we reset it first
+    ti.lpszText = const_cast<wxChar *>(wxT(""));
+    (void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, &ti);
+
+    ti.lpszText = const_cast<wxChar *>(m_text.wx_str());
+    (void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, &ti);
+}
+
+void wxToolTip::DoForAllWindows(void (wxToolTip::*func)(WXHWND))
+{

     if ( m_window )
     {
     if ( m_window )
     {

-        // update it immediately
-        wxToolInfo ti(m_window);
-        ti.lpszText = (wxChar *)m_text.c_str();
+        (this->*func)(m_window->GetHWND());
+    }

 
 

-        (void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, 0, &ti);
+    if ( m_others )
+    {
+        for ( wxToolTipOtherWindows::const_iterator it = m_others->begin();
+              it != m_others->end();
+              ++it )
+        {
+            (this->*func)(*it);
+        }

     }
 }
 
     }
 }