fix memory leak (coverity checker CID 53)

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

diff --git a/src/msw/tooltip.cpp b/src/msw/tooltip.cpp
index bdcd7478b4826091cf11f013147dbd962cc14a91..052fbca0b9e2b53016a1c35a8aa24b76e1130c2d 100644 (file)
--- a/src/msw/tooltip.cpp
+++ b/src/msw/tooltip.cpp
@@ -32,9 +32,8 @@
 #include "wx/tooltip.h"
 #include "wx/msw/private.h"
 
-#if defined(__WIN95__) && !(defined(__GNUWIN32_OLD__) && !defined(__CYGWIN10__))
-    #include <commctrl.h>
-#endif
+// include <commctrl.h> "properly"
+#include "wx/msw/wrapcctl.h"
 
 // VZ: normally, the trick with subclassing the tooltip control and processing
 //     TTM_WINDOWFROMPOINT should work but, somehow, it doesn't. I leave the
@@ -142,13 +141,13 @@ LRESULT APIENTRY wxToolTipWndProc(HWND hwndTT,
     {
         LPPOINT ppt = (LPPOINT)lParam;
 
-        // the window on which event occured
+        // 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 wxWindows are
+        // return a HWND corresponding to a wxWindow because only wxWidgets are
         // associated with tooltips using TTM_ADDTOOL
         wxWindow *win = wxGetWindowFromHWND((WXHWND)hwnd);
 
@@ -218,8 +217,7 @@ WXHWND wxToolTip::GetToolTipCtrl()
 
 #if wxUSE_TTM_WINDOWFROMPOINT
            // subclass the newly created control
-           gs_wndprocToolTip = (WNDPROC)::GetWindowLong(hwnd, GWL_WNDPROC);
-           ::SetWindowLong(hwnd, GWL_WNDPROC, (long)wxToolTipWndProc);
+           gs_wndprocToolTip = wxSetWindowProc(hwnd, wxToolTipWndProc);
 #endif // wxUSE_TTM_WINDOWFROMPOINT
        }
     }
@@ -291,7 +289,7 @@ void wxToolTip::Add(WXHWND hWnd)
         if ( index != wxNOT_FOUND )
         {
 #ifdef TTM_SETMAXTIPWIDTH
-            if ( wxTheApp->GetComCtl32Version() >= 470 )
+            if ( wxApp::GetComCtl32Version() >= 470 )
             {
                 // use TTM_SETMAXTIPWIDTH to make tooltip multiline using the
                 // extent of its first line as max value
@@ -319,19 +317,27 @@ void wxToolTip::Add(WXHWND hWnd)
                 }
 
                 SIZE sz;
-                if ( !GetTextExtentPoint(hdc, m_text, index, &sz) )
+                if ( !::GetTextExtentPoint32(hdc, m_text, index, &sz) )
                 {
-                    wxLogLastError(wxT("GetTextExtentPoint"));
+                    wxLogLastError(wxT("GetTextExtentPoint32"));
                 }
 
                 SendTooltipMessage(GetToolTipCtrl(), TTM_SETMAXTIPWIDTH,
                                    0, (void *)sz.cx);
             }
+            else
 #endif // comctl32.dll >= 4.70
+            {
+                // replace the '\n's with spaces because otherwise they appear as
+                // unprintable characters in the tooltip string
+                m_text.Replace(_T("\n"), _T(" "));
+                ti.lpszText = (wxChar *)m_text.c_str(); // const_cast
 
-            // replace the '\n's with spaces because otherwise they appear as
-            // unprintable characters in the tooltip string
-            m_text.Replace(_T("\n"), _T(" "));
+                if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, 0, &ti) )
+                {
+                    wxLogDebug(_T("Failed to create the tooltip '%s'"), m_text.c_str());
+                }
+            }
         }
     }
 }
@@ -362,7 +368,7 @@ void wxToolTip::SetWindow(wxWindow *win)
             {
                 // may be it's a child of parent of the control, in fact?
                 // (radiobuttons are subcontrols, i.e. children of the radiobox
-                // for wxWindows but are its siblings at Windows level)
+                // for wxWidgets but are its siblings at Windows level)
                 hwnd = GetDlgItem(GetHwndOf(m_window->GetParent()), id);
             }