Click scrollbar will cause recapture mouse twice error, add check sentence before capture and release mouse in HandleMouse()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77762 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/univ/scrolbar.cpp

@@ -1002,6 +1002,8 @@ bool wxStdScrollBarInputHandler::HandleMouse(wxInputConsumer *consumer,
             {
                 m_btnCapture = btn;
                 m_winCapture = consumer->GetInputWindow();
+
+                if ( !m_winCapture->HasCapture() )
                     m_winCapture->CaptureMouse();
 
                 // generate the command
@@ -1065,6 +1067,7 @@ bool wxStdScrollBarInputHandler::HandleMouse(wxInputConsumer *consumer,
         {
             if ( m_winCapture )
             {
+                if ( m_winCapture->HasCapture() )
                     StopScrolling(scrollbar);
 
                 // if we were dragging the thumb, send the last event