added wxIconLocation; minor fixes to wxIcon on some platforms

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@21279 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/icon.cpp

@@ -85,6 +85,19 @@ wxIcon::wxIcon(const wxString& iconfile,
     LoadFile(iconfile, flags, desiredWidth, desiredHeight);
 }
 
+wxIcon::wxIcon(const wxIconLocation& loc)
+{
+    // wxICOFileHandler accepts names in the format "filename;index"
+    wxString fullname = loc.GetFileName();
+    if ( loc.GetIndex() )
+    {
+        fullname << _T(';') << loc.GetIndex();
+    }
+    //else: 0 is default
+
+    LoadFile(fullname);
+}
+
 wxIcon::~wxIcon()
 {
 }