Using IUP GUI toolkit with D the language
IUP Version 3.6 
http://www.tecgraf.puc-rio.br/iup/

IUP is licensed under MIT license ,  see COPYRIGHT-IUP
IUP-D is Licensed under the Academic Free License version 3.0
see License.txt or License.html 
-------

Direct use of the IUP libraries C functions in the D code.

Includes a small simple IupWidget class to wrap a IUP control/widget/dialog etc,
uses opDisptach() to forward calls to the real IupXxx functions,
also overrides index operators to read/set attributes (IupStoreAttribute)
adds methods/functions that set callbacks for a control to point to a method in a class
eg: 

    IupSetFunction("button1_cb", &button1_callback);

    // button2 is a IupWidget
    IupSetCallback(button2.ihandle, "ACTION", &button2_cb);
    IupSetCallback(*button2, "ACTION", &button2_cb);
    button2.SetCallback("ACTION", &button2_cb);

    // or callbacks = methods of a class
    // will call this.button2Cb(IHandle*)
    button2.setCallback!"button2Cb"(this);
    button3.setCallback!"button3Cb"(this);
        
    // set an attribute
    button3["ACTIVE"] = "No";

    // dlg is a IupWidget
    dlg.Show();

Philippe Quesnel
kwez555@hotmail.com