X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/786646f3c201dc18ef065219288207734c8855f9..9b69526274b023fa1460b29a92bea8bf82e4703f:/src/common/wincmn.cpp

diff --git a/src/common/wincmn.cpp b/src/common/wincmn.cpp
index 2b63369661..24158367eb 100644
--- a/src/common/wincmn.cpp
+++ b/src/common/wincmn.cpp
@@ -214,6 +214,8 @@ bool wxWindowBase::CreateBase(wxWindowBase *parent,
 // common clean up
 wxWindowBase::~wxWindowBase()
 {
+    wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
+
     // FIXME if these 2 cases result from programming errors in the user code
     //       we should probably assert here instead of silently fixing them
 
@@ -631,6 +633,41 @@ wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
     return handlerA;
 }
 
+bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
+{
+    wxCHECK_MSG( handler, FALSE, _T("RemoveEventHandler(NULL) called") );
+
+    wxEvtHandler *handlerPrev = NULL,
+                 *handlerCur = GetEventHandler();
+    while ( handlerCur )
+    {
+        wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
+
+        if ( handlerCur == handler )
+        {
+            if ( handlerPrev )
+            {
+                handlerPrev->SetNextHandler(handlerNext);
+            }
+            else
+            {
+                SetEventHandler(handlerNext);
+            }
+
+            handler->SetNextHandler(NULL);
+
+            return TRUE;
+        }
+
+        handlerPrev = handlerCur;
+        handlerCur = handlerNext;
+    }
+
+    wxFAIL_MSG( _T("where has the event handler gone?") );
+
+    return FALSE;
+}
+
 // ----------------------------------------------------------------------------
 // cursors, fonts &c
 // ----------------------------------------------------------------------------
@@ -1625,7 +1662,7 @@ struct WXDLLEXPORT wxWindowNext
 void wxWindowBase::CaptureMouse()
 {
     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(0x%08x)"), this);
-
+    
     wxWindow *winOld = GetCapture();
     if ( winOld )
     {
@@ -1642,6 +1679,10 @@ void wxWindowBase::CaptureMouse()
 
 void wxWindowBase::ReleaseMouse()
 {
+    wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(0x%08x)"), this);
+
+    wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") )
+
     DoReleaseMouse();
 
     if ( ms_winCaptureNext )