guard against nullptr

[wxWidgets.git] / src / os2 / spinbutt.cpp

diff --git a/src/os2/spinbutt.cpp b/src/os2/spinbutt.cpp
index 0bd30bf97c577b6cecc552b860df0b0bc8f0404b..19ea7af58212bfbdfacbd96c12d517ed3a15587c 100644 (file)
--- a/src/os2/spinbutt.cpp
+++ b/src/os2/spinbutt.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        spinbutt.cpp
+// Name:        src/os2/spinbutt.cpp
 // Purpose:     wxSpinButton
 // Author:      David Webster
 // Modified by:
@@ -9,11 +9,6 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
-    #pragma implementation "spinbutt.h"
-    #pragma implementation "spinbutbase.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -32,9 +27,6 @@
 extern void  wxAssociateWinWithHandle( HWND         hWnd
                                       ,wxWindowOS2* pWin
                                      );
-static WXFARPROC fnWndProcSpinCtrl = (WXFARPROC)NULL;
-
-IMPLEMENT_DYNAMIC_CLASS(wxSpinEvent, wxNotifyEvent)
 
 #include "wx/os2/private.h"
 
@@ -46,8 +38,6 @@ IMPLEMENT_DYNAMIC_CLASS(wxSpinEvent, wxNotifyEvent)
 // wxWin macros
 // ----------------------------------------------------------------------------
 
-IMPLEMENT_DYNAMIC_CLASS(wxSpinButton, wxControl)
-
 bool wxSpinButton::Create(
   wxWindow*                         pParent
 , wxWindowID                        vId
@@ -69,8 +59,11 @@ bool wxSpinButton::Create(
         m_windowId = NewControlId();
     else
         m_windowId = vId;
-    m_backgroundColour = pParent->GetBackgroundColour();
-    m_foregroundColour = pParent->GetForegroundColour();
+    if (pParent)
+    {
+        m_backgroundColour = pParent->GetBackgroundColour();
+        m_foregroundColour = pParent->GetForegroundColour();
+    }
     SetName(rsName);
     SetParent(pParent);
     m_windowStyle      = lStyle;
@@ -123,20 +116,17 @@ bool wxSpinButton::Create(
 
     ::WinQueryWindowPos(m_hWnd, &vSwp);
     SetXComp(vSwp.x);
-    SetYComp(vSwp.y);
-    wxFont*                          pTextFont = new wxFont( 10
-                                                            ,wxMODERN
-                                                            ,wxNORMAL
-                                                            ,wxNORMAL
-                                                           );
-    SetFont(*pTextFont);
+    SetYComp(vSwp.y-5); // compensate for the associated TextControl border
+
+    SetFont(*wxSMALL_FONT);
     //
     // For OS/2 we want to hide the text portion so we can substitute an
-    // independent text ctrl in its place.  10 device units does this
+    // independent text ctrl in its place.
+    // Therefore we must override any user given width with our best guess.
     //
-    SetSize( nX
-            ,nY
-            ,10L
+    SetSize( nX - GetXComp()
+            ,nY - GetYComp()
+            ,nWidth
             ,nHeight
            );
     wxAssociateWinWithHandle( m_hWnd
@@ -149,7 +139,6 @@ bool wxSpinButton::Create(
     ::WinSetWindowULong(GetHwnd(), QWL_USER, (LONG)this);
     fnWndProcSpinCtrl = (WXFARPROC)::WinSubclassWindow(m_hWnd, (PFNWP)wxSpinCtrlWndProc);
 #endif
-    delete pTextFont;
     return TRUE;
 } // end of wxSpinButton::Create
 
@@ -164,11 +153,12 @@ wxSpinButton::~wxSpinButton()
 wxSize wxSpinButton::DoGetBestSize() const
 {
     //
-    // OS/2 PM does not really have system metrics so we'll just set  it to
-    // 24x20 which is the size of the buttons and the borders.
-    // Also we have no horizontal spin buttons.
+    // OS/2 PM does not really have system metrics so we'll just set it to
+    // a square based on its height.
     //
-    return (wxSize(24,20));
+    RECTL   vRect;
+    ::WinQueryWindowRect(GetHwnd(),&vRect);
+    return wxSize(vRect.yTop,vRect.yTop);
 } // end of wxSpinButton::DoGetBestSize
 
 // ----------------------------------------------------------------------------
@@ -191,31 +181,25 @@ int wxSpinButton::GetValue() const
     return ((int)lVal);
 } // end of wxSpinButton::GetValue
 
-bool wxSpinButton::OS2OnScroll(
-  int                               nOrientation
-, WXWORD                            wParam
-, WXWORD                            wPos
-, WXHWND                            hControl
-)
+bool wxSpinButton::OS2OnScroll( int    WXUNUSED(nOrientation),
+                                WXWORD WXUNUSED(wParam),
+                                WXWORD wPos,
+                                WXHWND hControl )
 {
-    wxCHECK_MSG(hControl, FALSE, wxT("scrolling what?") )
+    wxCHECK_MSG(hControl, false, wxT("scrolling what?") );
 
-    wxSpinEvent                     vEvent( wxEVT_SCROLL_THUMBTRACK
-                                           ,m_windowId
-                                          );
-    int                             nVal = (int)wPos;    // cast is important for negative values!
+    wxSpinEvent vEvent( wxEVT_SCROLL_THUMBTRACK, m_windowId );
+    int nVal = (int)wPos;    // cast is important for negative values!
 
     vEvent.SetPosition(nVal);
     vEvent.SetEventObject(this);
-    return(GetEventHandler()->ProcessEvent(vEvent));
+    return(HandleWindowEvent(vEvent));
 } // end of wxSpinButton::OS2OnScroll
 
-bool wxSpinButton::OS2Command(
-  WXUINT                            uCmd
-, WXWORD                            wId
-)
+bool wxSpinButton::OS2Command( WXUINT WXUNUSED(uCmd),
+                               WXWORD WXUNUSED(wId) )
 {
-    return FALSE;
+    return false;
 } // end of wxSpinButton::OS2Command
 
 void wxSpinButton::SetRange(