Merge branch 'mswdc-draw-point-checkbox' of https://github.com/MaartenBent/wxWidgets

Draw the same shape in wxDC::DrawCheckMark() under all platforms and
provide wxRenderer::DrawCheckMark() for drawing the platform-specific
shape.

Also fix wxGCDC::DrawPoint() to use the default one point wide pen.

See https://github.com/wxWidgets/wxWidgets/pull/1471

interface/wx/renderer.h

@@ -234,8 +234,13 @@ public:
     virtual void DrawCheckBox(wxWindow *win, wxDC& dc,
                               const wxRect& rect, int flags = 0 );
 
+    virtual void DrawCheckMark(wxWindow *win, wxDC& dc,
+                               const wxRect& rect, int flags = 0 );
+
     virtual wxSize GetCheckBoxSize(wxWindow *win);
 
+    virtual wxSize GetCheckMarkSize(wxWindow *win);
+
     virtual wxSize GetExpanderSize(wxWindow* win);
 
     virtual void DrawPushButton(wxWindow *win, wxDC& dc,
@@ -532,6 +537,17 @@ public:
                                     wxTitleBarButton button,
                                     int flags = 0) = 0;
 
+    /**
+        Draw a check mark.
+
+        @a flags may have the @c wxCONTROL_DISABLED bit set, see
+        @ref wxCONTROL_FLAGS.
+
+        @since 3.1.3
+    */
+    virtual void DrawCheckMark(wxWindow* win, wxDC& dc, const wxRect& rect,
+                               int flags = 0) = 0;
+
     /**
         Return the currently used renderer.
     */
@@ -560,6 +576,16 @@ public:
     */
     virtual wxSize GetCheckBoxSize(wxWindow* win) = 0;
 
+    /**
+        Returns the size of a check mark.
+
+        @param win A valid, i.e. non-null, window pointer which is used to get
+            the theme defining the checkmark size under some platforms.
+
+        @since 3.1.3
+    */
+    virtual wxSize GetCheckMarkSize(wxWindow* win) = 0;
+
     /**
         Returns the size of the expander used in tree-like controls.