X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9617f65bccba124625546fd798e03e59d97b35c9..2bfca191bf2261e385594a369da9aa4e4441aa43:/src/msw/button.cpp

diff --git a/src/msw/button.cpp b/src/msw/button.cpp
index 45f6b37795..b342fbc0b2 100644
--- a/src/msw/button.cpp
+++ b/src/msw/button.cpp
@@ -40,8 +40,8 @@
 #endif
 
 #include "wx/stockitem.h"
-#include "wx/tokenzr.h"
 #include "wx/msw/private.h"
+#include "wx/msw/private/button.h"
 
 #if wxUSE_UXTHEME
     #include "wx/msw/uxtheme.h"
@@ -183,10 +183,7 @@ bool wxButton::Create(wxWindow *parent,
     //
     // NB: we do it here and not in MSWGetStyle() because we need the label
     //     value and the label is not set yet when MSWGetStyle() is called
-    if ( label.find(_T('\n')) != wxString::npos )
-    {
-        msStyle |= BS_MULTILINE;
-    }
+    msStyle |= wxMSWButton::GetMultilineStyle(label);
 
     return MSWCreateControl(_T("BUTTON"), msStyle, pos, size, label, exstyle);
 }
@@ -238,19 +235,7 @@ WXDWORD wxButton::MSWGetStyle(long style, WXDWORD *exstyle) const
 
 void wxButton::SetLabel(const wxString& label)
 {
-    // update BS_MULTILINE style depending on the new label (resetting it
-    // doesn't seem to do anything very useful but it shouldn't hurt and we do
-    // have to set it whenever the label becomes multi line as otherwise it
-    // wouldn't be shown correctly)
-    long styleOld = ::GetWindowLong(GetHwnd(), GWL_STYLE),
-         styleNew;
-    if ( label.find(_T('\n')) != wxString::npos )
-        styleNew = styleOld | BS_MULTILINE;
-    else
-        styleNew = styleOld & ~BS_MULTILINE;
-
-    if ( styleNew != styleOld )
-        ::SetWindowLong(GetHwnd(), GWL_STYLE, styleNew);
+    wxMSWButton::UpdateMultilineStyle(GetHwnd(), label);
 
     wxButtonBase::SetLabel(label);
 }
@@ -367,26 +352,32 @@ wxWindow *wxButton::SetDefault()
     return winOldDefault;
 }
 
-// special version of wxGetTopLevelParent() which is safe to call when the
-// parent is being destroyed: wxGetTopLevelParent() would just return NULL in
-// this case because wxWindow version of IsTopLevel() is used when it's called
-// during window destruction instead of wxTLW one, but we want to distinguish
-// between these cases
+// return the top level parent window if it's not being deleted yet, otherwise
+// return NULL
 static wxTopLevelWindow *GetTLWParentIfNotBeingDeleted(wxWindow *win)
 {
-    for ( ; win; win = win->GetParent() )
+    for ( ;; )
     {
-        if ( win->IsTopLevel() )
+        // IsTopLevel() will return false for a wxTLW being deleted, so we also
+        // need the parent test for this case
+        wxWindow * const parent = win->GetParent();
+        if ( !parent || win->IsTopLevel() )
         {
             if ( win->IsBeingDeleted() )
                 return NULL;
+
             break;
         }
+
+        win = parent;
     }
 
     wxASSERT_MSG( win, _T("button without top level parent?") );
 
-    return wxDynamicCast(win, wxTopLevelWindow);
+    wxTopLevelWindow * const tlw = wxDynamicCast(win, wxTopLevelWindow);
+    wxASSERT_MSG( tlw, _T("logic error in GetTLWParentIfNotBeingDeleted()") );
+
+    return tlw;
 }
 
 // set this button as being currently default