From d40e9e06bbccc5bc4a73e4138d1f11c50cec7aa9 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Thu, 11 Jan 2007 01:59:42 +0000
Subject: [PATCH] no changes, just refactor the code sending spin update event
 to SendSpinUpdate() instead of duplicating it; also initialize m_oldValue

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@44196 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 include/wx/msw/spinctrl.h | 14 +++++++++++---
 src/msw/spinctrl.cpp      | 35 +++++++++++++++++++----------------
 2 files changed, 30 insertions(+), 19 deletions(-)

diff --git a/include/wx/msw/spinctrl.h b/include/wx/msw/spinctrl.h
index edcb026f76..2a5f56f5c0 100644
--- a/include/wx/msw/spinctrl.h
+++ b/include/wx/msw/spinctrl.h
@@ -99,14 +99,22 @@ protected:
     // the handler for wxSpinButton events
     void OnSpinChange(wxSpinEvent& event);
 
-    // Handle processing of special keys
+    // handle processing of special keys
     void OnChar(wxKeyEvent& event);
     void OnSetFocus(wxFocusEvent& event);
     void OnKillFocus(wxFocusEvent& event);
 
-    int m_oldValue;
+    // generate spin control update event with the given value
+    void SendSpinUpdate(int value);
+
+    // called to ensure that the value is in the correct range
     virtual void NormalizeValue();
-   
+
+
+    // the value of the control before the latest change (which might not have
+    // changed anything in fact -- this is why we need this field)
+    int m_oldValue;
+
     // the data for the "buddy" text ctrl
     WXHWND     m_hwndBuddy;
     WXFARPROC  m_wndProcBuddy;
diff --git a/src/msw/spinctrl.cpp b/src/msw/spinctrl.cpp
index a8882e4043..6651f614ac 100644
--- a/src/msw/spinctrl.cpp
+++ b/src/msw/spinctrl.cpp
@@ -269,7 +269,7 @@ void wxSpinCtrl::OnSetFocus(wxFocusEvent& event)
 void wxSpinCtrl::NormalizeValue()
 {
     const int value = GetValue();
-    const bool changed = value == m_oldValue;
+    const bool changed = value != m_oldValue;
 
     // notice that we have to call SetValue() even if the value didn't change
     // because otherwise we could be left with empty buddy control when value
@@ -278,11 +278,7 @@ void wxSpinCtrl::NormalizeValue()
 
     if ( changed )
     {
-        wxCommandEvent event(wxEVT_COMMAND_SPINCTRL_UPDATED, GetId());
-        event.SetEventObject(this);
-        event.SetInt(value);
-        GetEventHandler()->ProcessEvent(event);
-        m_oldValue = value;
+        SendSpinUpdate(value);
     }
 }
 
@@ -299,6 +295,11 @@ bool wxSpinCtrl::Create(wxWindow *parent,
                         int min, int max, int initial,
                         const wxString& name)
 {
+    // this should be in ctor/init function but I don't want to add one to 2.8
+    // to avoid problems with default ctor which can be inlined in the user
+    // code and so might not get this fix without recompilation
+    m_oldValue = INT_MIN;
+
     // before using DoGetBestSize(), have to set style to let the base class
     // know whether this is a horizontal or vertical control (we're always
     // vertical)
@@ -546,25 +547,27 @@ void wxSpinCtrl::DoSetToolTip(wxToolTip *tip)
 #endif // wxUSE_TOOLTIPS
 
 // ----------------------------------------------------------------------------
-// event processing
+// events processing and generation
 // ----------------------------------------------------------------------------
 
-void wxSpinCtrl::OnSpinChange(wxSpinEvent& eventSpin)
+void wxSpinCtrl::SendSpinUpdate(int value)
 {
     wxCommandEvent event(wxEVT_COMMAND_SPINCTRL_UPDATED, GetId());
     event.SetEventObject(this);
-    int value = eventSpin.GetPosition();
-    event.SetInt( value );
+    event.SetInt(value);
 
-    if (value != m_oldValue)
-        (void)GetEventHandler()->ProcessEvent(event);
+    (void)GetEventHandler()->ProcessEvent(event);
+
+    m_oldValue = value;
+}
 
-    if ( eventSpin.GetSkipped() )
+void wxSpinCtrl::OnSpinChange(wxSpinEvent& eventSpin)
+{
+    const int value = eventSpin.GetPosition();
+    if ( value != m_oldValue )
     {
-        event.Skip();
+        SendSpinUpdate(value);
     }
-
-    m_oldValue = value;
 }
 
 // ----------------------------------------------------------------------------
-- 
2.45.2