RegisterClass(A/W) not a member of hx

[Luke Selman]

I am having this annoying issue when adding and implementing additional externs to my own libraries, as well as hxWidgets and keep getting the error "RegisterClassA" or "RegisterClassW not a member of hx".

I read up on this StackOverflow issue posted 3 years ago, and followed the steps suggested in the accepted answer, but to no avail, causing the same error regardless of which implementation of "RegisterClass" I undef.

I'm currently using the git version of hxcpp to build projects at the moment, to take advantage of cpp::Reference.

Now the above StackOverflow issue is about using the "windows.h" include file, but with that said I'm not touching that include due to that very experience. I was creating a separate project earlier attempting to use "windows.h" for creating a native binding for Win32 for learning purposes, but because of this issue I gave up after following that same suggestion.

Below is the code I'm attempting to implement into hxWidgets:

package wx.widgets;

import cpp.ConstCharStar;

@:include("wx/glcanvas.h")
@:unreflective
@:native("cpp::Reference<wxGLCanvas>")
extern class GLCanvas extends GLCanvasImpl {
    @:native("new wxGLCanvas")      public static function createInstance(parent:Window, id:Int):GLCanvas;
}

@:include("wx/glcanvas.h")
@:unreflective
@:native("wxGLCanvas")
extern class GLCanvasImpl extends Window {
    @:native("SetColour")       public function setColour(colour:ConstCharStar):Bool;
}

And here is the wrapper:

package hx.widgets;

import wx.widgets.GLCanvas in WxGLCanvas;

class GLCanvas extends Window {
   
    public function new(parent:Window = null, id:Int = -1) {
        super();
       
        var canvas:WxGLCanvas = WxGLCanvas.createInstance(parent == null ? cast 0 : parent._ref, id);
        _ref = cast canvas;
    }
   
    public function setColour(name:String) {
        glCanvasRef.setColour(name);
    }
   
    private var glCanvasRef(get, null):WxGLCanvas;
    private inline function get_glCanvasRef():WxGLCanvas {
        return cast _ref;
    }
   
}

Any help would be greatly appreciated.

[Luke Selman]

I've restarted my computer, thinking it may help, but didn't change the situation.

I've also got a screenshot here, not sure if it will help:

The Build.xml file hasn't changed and that still includes the UNICODE flags as you would expect, not sure if that's got anything to do with it...

[Robert Konrad]

Something includes windows.h indirectly, probably wx/glcanvas.h. Guess your undef is wrong. You need to undef RegisterClass (without A or W).

[Robert Konrad]

Plus your undef has to appear after the glcanvas.h include.

[Luke Selman]

Yeah, okay, so adding it in the wrapper part instead of the binding part actually works. Just need to test now. Thanks.

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[Ian Harrigan]

Yup, on windows you need to explicity undef the RegisterClass macro as hxcpp has its own RegisterClass function that clashes. Its used all over the rest of the hxWidgets lib btw - might have saved yourself some time ;)

Ian 

[Hugh]

There is a "#undef RegisterClass" in the hxcpp include code, so you could try including windows.h (or the code that in turns include this) first, and then hxcpp.h later.

Hugh