Add wxBitmap(NSImage*) ctor to wxOSX.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73574 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/osx/core/bitmap.cpp

@@ -1005,6 +1005,17 @@ IconRef wxBitmap::CreateIconRef() const
 
 #if wxOSX_USE_COCOA
 
+wxBitmap::wxBitmap(WX_NSImage image)
+{
+    (void)Create(image);
+}
+
+bool wxBitmap::Create(WX_NSImage image)
+{
+    wxCFRef<CGImageRef> cgimage(wxOSXCreateCGImageFromNSImage(image));
+    return Create(cgimage);
+}
+
 WX_NSImage wxBitmap::GetNSImage() const
 {
     wxCFRef< CGImageRef > cgimage(CreateCGImage());