resource stack structure that sets up correct resource, new entry points for shared...

[wxWidgets.git] / src / common / wincmn.cpp

diff --git a/src/common/wincmn.cpp b/src/common/wincmn.cpp
index 3a1fd0f2d867caefbdf4f80e884bf32a5f938165..c6a369eb14aa158cfe15372e16c6d3ea98dd8e09 100644 (file)
--- 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
 
@@ -1612,3 +1614,52 @@ wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
 }
 
+// ----------------------------------------------------------------------------
+// mouse capture
+// ----------------------------------------------------------------------------
+
+struct WXDLLEXPORT wxWindowNext
+{
+    wxWindow *win;
+    wxWindowNext *next;
+} *wxWindowBase::ms_winCaptureNext = NULL;
+
+void wxWindowBase::CaptureMouse()
+{
+    wxLogTrace(_T("mousecapture"), _T("CaptureMouse(0x%08x)"), this);
+    
+    wxWindow *winOld = GetCapture();
+    if ( winOld )
+    {
+        // save it on stack
+        wxWindowNext *item = new wxWindowNext;
+        item->win = winOld;
+        item->next = ms_winCaptureNext;
+        ms_winCaptureNext = item;
+    }
+    //else: no mouse capture to save
+
+    DoCaptureMouse();
+}
+
+void wxWindowBase::ReleaseMouse()
+{
+    wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(0x%08x)"), this);
+
+    DoReleaseMouse();
+
+    if ( ms_winCaptureNext )
+    {
+        ms_winCaptureNext->win->CaptureMouse();
+
+        wxWindowNext *item = ms_winCaptureNext;
+        ms_winCaptureNext = item->next;
+        delete item;
+    }
+    //else: stack is empty, no previous capture
+
+    wxLogTrace(_T("mousecapture"),
+               _T("After ReleaseMouse() mouse is captured by 0x%08x"),
+               GetCapture());
+}
+