X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2bae4332e74923585bc0843f70bfc11e9759c33b..48f625bc2ce81132a2a8c2d7c524a03f1b7196e5:/src/msw/choice.cpp?ds=sidebyside

diff --git a/src/msw/choice.cpp b/src/msw/choice.cpp
index c8681252f8..a21d63a688 100644
--- a/src/msw/choice.cpp
+++ b/src/msw/choice.cpp
@@ -17,10 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "choice.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -236,6 +232,7 @@ int wxChoice::DoAppend(const wxString& item)
             UpdateVisibleHeight();
     }
 
+    InvalidateBestSize();
     return n;
 }
 
@@ -255,6 +252,7 @@ int wxChoice::DoInsert(const wxString& item, int pos)
             UpdateVisibleHeight();
     }
 
+    InvalidateBestSize();
     return n;
 }
 
@@ -271,6 +269,8 @@ void wxChoice::Delete(int n)
 
     if ( !IsFrozen() )
         UpdateVisibleHeight();
+
+    InvalidateBestSize();
 }
 
 void wxChoice::Clear()
@@ -281,6 +281,8 @@ void wxChoice::Clear()
 
     if ( !IsFrozen() )
         UpdateVisibleHeight();
+
+    InvalidateBestSize();
 }
 
 void wxChoice::Free()
@@ -300,6 +302,17 @@ void wxChoice::Free()
 // ----------------------------------------------------------------------------
 
 int wxChoice::GetSelection() const
+{
+    // if m_lastAcceptedSelection is set, it means that the dropdown is
+    // currently shown and that we want to use the last "permanent" selection
+    // instead of whatever is under the mouse pointer currently
+    //
+    // otherwise, get the selection from the control
+    return m_lastAcceptedSelection == wxID_NONE ? GetCurrentSelection()
+                                                : m_lastAcceptedSelection;
+}
+
+int wxChoice::GetCurrentSelection() const
 {
     return (int)SendMessage(GetHwnd(), CB_GETCURSEL, 0, 0);
 }
@@ -383,6 +396,8 @@ void wxChoice::SetString(int n, const wxString& s)
         DoSetItemClientData(n, data);
     }
     //else: it's already NULL by default
+
+    InvalidateBestSize();
 }
 
 wxString wxChoice::GetString(int n) const
@@ -567,7 +582,9 @@ wxSize wxChoice::DoGetBestSize() const
     // the combobox should be slightly larger than the widest string
     wChoice += 5*GetCharWidth();
 
-    return wxSize(wChoice, EDIT_HEIGHT_FROM_CHAR_HEIGHT(GetCharHeight()));
+    wxSize best(wChoice, EDIT_HEIGHT_FROM_CHAR_HEIGHT(GetCharHeight()));
+    CacheBestSize(best);
+    return best;
 }
 
 WXLRESULT wxChoice::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
@@ -611,27 +628,42 @@ WXLRESULT wxChoice::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 
 bool wxChoice::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 {
-    if ( param != CBN_SELCHANGE)
+    switch ( param )
     {
-        // "selection changed" is the only event we're after
-        return false;
-    }
+        case CBN_DROPDOWN:
+            // we don't want to track selection using CB_GETCURSEL while the
+            // dropdown is opened
+            m_lastAcceptedSelection = GetCurrentSelection();
+            break;
 
-    int n = GetSelection();
-    if (n > -1)
-    {
-        wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, m_windowId);
-        event.SetInt(n);
-        event.SetEventObject(this);
-        event.SetString(GetStringSelection());
-        if ( HasClientObjectData() )
-            event.SetClientObject( GetClientObject(n) );
-        else if ( HasClientUntypedData() )
-            event.SetClientData( GetClientData(n) );
-        ProcessCommand(event);
+        case CBN_CLOSEUP:
+            // it should be safe to use CB_GETCURSEL again
+            m_lastAcceptedSelection = wxID_NONE;
+            break;
+
+        case CBN_SELCHANGE:
+            {
+                const int n = GetSelection();
+
+                wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, m_windowId);
+                event.SetInt(n);
+                event.SetEventObject(this);
+
+                if ( n > -1 )
+                {
+                    event.SetString(GetStringSelection());
+                    if ( HasClientObjectData() )
+                        event.SetClientObject( GetClientObject(n) );
+                    else if ( HasClientUntypedData() )
+                        event.SetClientData( GetClientData(n) );
+                }
+
+                ProcessCommand(event);
+            }
+            return true;
     }
 
-    return true;
+    return false;
 }
 
 WXHBRUSH wxChoice::MSWControlColor(WXHDC hDC, WXHWND hWnd)