Re-add minwin gtk example

samples/minwin_gtk/minwin/image.d

@@ -0,0 +1,76 @@
+/* MinWin Image class
+ *
+ * Written by Ben Hinkle and released to the public domain, as
+ * explained at http://creativecommons.org/licenses/publicdomain
+ * Report comments and bugs at dsource: http://www.dsource.org/projects/minwin
+ */
+
+module minwin.image;
+
+public import minwin.component;
+
+private {
+    import minwin.app;
+    import minwin.paint;
+}
+
+version (MinWin32) {
+    private import minwin.mswindows;
+
+    alias HBITMAP ImagePeer;
+
+    class Image {
+        int width,height;
+        ImagePeer peer;
+
+        this(ImagePeer bm) {
+            peer = bm;
+            hasPeer = FOREIGN_PEER;
+        }
+
+        void getBits() {
+            // call GetDIBits. make sure bitmap isn't selected in memGC
+            getGContext();
+            //            GetDIBits(memGC.peer,sdf);
+        }
+
+        GContext getGContext() {
+            GContext gc = newGContext();
+            gc.peer = CreateCompatibleDC(null); // hmm. null is for screen
+            sysAssert(gc.peer !is null, "Failed to create compatible DC for image");
+            gc.hasPeer = OWNS_PEER;
+            SelectObject(gc.peer,peer);
+            return gc;
+        }
+
+        mixin SimplePeerMixin!();
+
+    }
+} else version (GTK) {
+
+    private import minwin.window;
+    private import minwin.gtk;
+
+    //    alias GdkPixbuf* ImagePeer;
+    alias GdkPixmap* ImagePeer;
+
+    class Image {
+        int width,height;
+        ImagePeer peer;
+
+        this(ImagePeer bm) {
+            peer = bm;
+            hasPeer = FOREIGN_PEER;
+        }
+
+        GContext getGContext() {
+            GContext gc = newGContext();
+            gc.drawable = peer;
+            gc.peer = gdk_gc_new(gc.drawable);
+            gc.hasPeer = OWNS_PEER;
+            return gc;
+        }
+
+        mixin SimplePeerMixin!();
+    }
+}