X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d13b34d3f2be575d59747a5926000be7b28a45dc..43f4e852a1b2ac37c3db6a2b87315192ac549191:/src/msw/headerctrl.cpp

diff --git a/src/msw/headerctrl.cpp b/src/msw/headerctrl.cpp
index c6c4de551a..6a5a417acc 100644
--- a/src/msw/headerctrl.cpp
+++ b/src/msw/headerctrl.cpp
@@ -64,6 +64,7 @@ void wxHeaderCtrl::Init()
     m_numColumns = 0;
     m_imageList = NULL;
     m_scrollOffset = 0;
+    m_colBeingDragged = -1;
 }
 
 bool wxHeaderCtrl::Create(wxWindow *parent,
@@ -268,7 +269,7 @@ void wxHeaderCtrl::DoInsertItem(const wxHeaderColumn& col, unsigned int idx)
     // notice that we need to store the string we use the pointer to until we
     // pass it to the control
     hdi.mask |= HDI_TEXT;
-    wxWxCharBuffer buf = col.GetTitle().wx_str();
+    wxWxCharBuffer buf = col.GetTitle().t_str();
     hdi.pszText = buf.data();
     hdi.cchTextMax = wxStrlen(buf);
 
@@ -525,6 +526,9 @@ bool wxHeaderCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
         case HDN_ITEMCLICK:
         case HDN_ITEMDBLCLICK:
             evtType = GetClickEventType(code == HDN_ITEMDBLCLICK, nmhdr->iButton);
+
+            // We're not dragging any more.
+            m_colBeingDragged = -1;
             break;
 
             // although we should get the notifications about the right clicks
@@ -587,6 +591,11 @@ bool wxHeaderCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
             }
             break;
 
+            // The control is not supposed to send HDN_TRACK when using
+            // HDS_FULLDRAG (which we do use) but apparently some versions of
+            // comctl32.dll still do it, see #13506, so catch both messages
+            // just in case we are dealing with one of these buggy versions.
+        case HDN_TRACK:
         case HDN_ITEMCHANGING:
             if ( nmhdr->pitem && (nmhdr->pitem->mask & HDI_WIDTH) )
             {
@@ -617,8 +626,18 @@ bool wxHeaderCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
             if ( nmhdr->iItem == -1 )
                 break;
 
+            // If we are dragging a column that is not draggable and the mouse
+            // is moved over a different column then we get the column number from
+            // the column under the mouse. This results in an unexpected behaviour
+            // if this column is draggable. To prevent this remember the column we
+            // are dragging for the complete drag and drop cycle.
+            if ( m_colBeingDragged == -1 )
+            {
+                m_colBeingDragged = idx;
+            }
+
             // column must have the appropriate flag to be draggable
-            if ( !GetColumn(idx).IsReorderable() )
+            if ( !GetColumn(m_colBeingDragged).IsReorderable() )
             {
                 veto = true;
                 break;
@@ -639,10 +658,16 @@ bool wxHeaderCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
             order = MSWFromNativeOrder(order);
 
             evtType = wxEVT_COMMAND_HEADER_END_REORDER;
+
+            // We (successfully) ended dragging the column.
+            m_colBeingDragged = -1;
             break;
 
         case NM_RELEASEDCAPTURE:
             evtType = wxEVT_COMMAND_HEADER_DRAGGING_CANCELLED;
+
+            // Dragging the column was cancelled.
+            m_colBeingDragged = -1;
             break;
     }