1 files changed, 35 insertions, 0 deletions
diff --git a/ipl/packs/loadfuncpp/examples/extwidget.cpp b/ipl/packs/loadfuncpp/examples/extwidget.cpp
new file mode 100644
index 0000000..bb42364
--- /dev/null
+++ b/ipl/packs/loadfuncpp/examples/extwidget.cpp
@@ -0,0 +1,35 @@
+
+/* Example of a C++ extension to icon via loadfunc,
+ * without garbage collection difficulties.
+ * Type 'make iexample' to build.
+ * Carl Sturtivant, 2008/3/16
+ */
+
+#include "loadfuncpp.h"
+using namespace Icon;
+
+#include <cstdio>
+
+class Widget: public external {
+	long state;
+  public:
+  	Widget(long x): state(x) {}
+  	
+  	virtual value name() {
+  		return "Widget";
+  	}  	
+  	virtual external* copy() {
+  		return new Widget(state);
+  	}
+  	virtual value image() {
+  		char sbuf[100];
+  		sprintf(sbuf, "Widget_%ld(%ld)", id, state);
+  		return value(NewString, sbuf);
+  	}  	
+};
+
+extern "C" int iexample(int argc, value argv[]) {
+	argv[0] = new Widget(99);
+    return SUCCEEDED;
+}
+