Implement setting foreground colour for wxRadioButton in wxMSW.

Native radio buttons don't support changing their foreground colour, so use
owner drawn buttons if SetForegroundColour() was called, similarly to what was
already done for wxCheckBox.

Closes #10137.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76456 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/radiobut.h

@@ -47,18 +47,37 @@ public:
     // implementation only from now on
     virtual bool MSWCommand(WXUINT param, WXWORD id);
     virtual void Command(wxCommandEvent& event);
+    virtual bool SetForegroundColour(const wxColour& colour);
+    virtual bool MSWOnDraw(WXDRAWITEMSTRUCT *item);
+
     virtual bool HasTransparentBackground() { return true; }
 
+    // make the radiobutton owner drawn or reset it to normal style
+    void MSWMakeOwnerDrawn(bool ownerDrawn);
+
     virtual WXDWORD MSWGetStyle(long style, WXDWORD *exstyle) const;
 
 protected:
     virtual wxBorder GetDefaultBorder() const { return wxBORDER_NONE; }
     virtual wxSize DoGetBestSize() const;
+    virtual void MSWDrawButtonBitmap(wxWindow *win, wxDC& dc,
+                                     const wxRect& rect, int flags);
+
+    // return true if this checkbox is owner drawn
+    bool IsOwnerDrawn() const;
 
 private:
     // common part of all ctors
     void Init();
 
+    // event handlers used by owner-drawn radiobutton
+    void OnMouseEnterOrLeave(wxMouseEvent& event);
+    void OnMouseLeft(wxMouseEvent& event);
+    void OnFocus(wxFocusEvent& event);
+
+    // true if the radio button is currently pressed
+    bool m_isPressed;
+
     // we need to store the state internally as the result of GetValue()
     // sometimes gets out of sync in WM_COMMAND handler
     bool m_isChecked;