OpenEuphoria

1. wxTaskBarIcon help

• Posted by ghaberek (admin) Feb 18, 2009
• 1232 views

Matt,

I'm trying to wrap wxTaskBarIcon, and I'm doing something wrong. I just committed wxTaskBarIcon.cpp. When I try to build the library, I get the following error. I'm not sure what I'm doing wrong.

Open Watcom Make Version 1.7 
Portions Copyright (c) 1988-2002 Sybase, Inc. All Rights Reserved. 
Source code is available under the Sybase Open Watcom Public License. 
See http://www.openwatcom.org/ for details. 
	wpp386 -bt=nt -zq -fo=wat_dll\wxTaskBarIcon.obj /bd /xs     -d__WXMSW__     -dwxNO_THREADS -dWXEUMSW -d_UNICODE 
-i=C:\EUPHORIA\wxWidgets-2.8.7\lib\wat_dll\mswu -DWX_LIB_BUILD=13 -i=C:\EUPHORIA\wxWidgets-2.8.7\include -w0 -dWXUSINGDLL 
-i=C:\EUPHORIA\wxWidgets-2.8.7\lib\wat_dll\mswu /d1 -dNOPCH   .\wxTaskBarIcon.cpp 
	wlink runtime windows=4.0 @wat_dll\wxeu.lbc @wat_dll\exports.lbc 
Error! E2028: near wxString::wxString( int ) is an undefined reference 
file wat_dll\wxTaskBarIcon.obj(C:\EUPHORIA\wxEuphoria\wxeu\trunk\wxTaskBarIcon.cpp): undefined symbol near wxString::wxString( int ) 

Here's the code:

// For compilers that support precompilation, includes "wx/wx.h". 
#include "wx/wxprec.h" 
 
#ifdef __BORLANDC__ 
    #pragma hdrstop 
#endif 
 
#ifndef WX_PRECOMP 
    #include "wx/wx.h" 
#endif 
#include "alldefs.h" 
#include "wxeu.h" 
#include "wx/taskbar.h" 
 
 
extern "C"{ 
class EuTaskBarIcon: public wxTaskBarIcon 
{ 
public: 
    EuTaskBarIcon() {} 
    wxMenu * m_Menu; 
    virtual wxMenu *CreatePopupMenu(); 
}; 
 
wxMenu *EuTaskBarIcon::CreatePopupMenu() 
{ 
    m_Menu = new wxMenu; 
    return m_Menu; 
} 
 
object WXEUAPI new_wxTaskBarIcon(object params) 
{ 
    wxDeRefDS( params ); 
     
    EuTaskBarIcon * icon = new EuTaskBarIcon(); 
    return BOX_INT( icon ); 
} 
 
object WXEUAPI get_taskbar_menu( int taskbar ) 
{ 
    return BOX_INT( ((EuTaskBarIcon*)taskbar)->m_Menu ); 
} 
 
void WXEUAPI set_taskbar_icon( int taskbar, int icon, object tooltip ) 
{ 
    wxIcon ico = (wxIcon)icon; 
    wxString str = get_string(tooltip); 
    wxDeRefDS( tooltip ); 
     
    ((EuTaskBarIcon*)taskbar)->SetIcon( ico, str ); 
} 
 
} 

-Greg

3. Re: wxTaskBarIcon help

• Posted by ghaberek (admin) Feb 18, 2009
• 1133 views

    wxIcon ico = (wxIcon)icon; 
...should be... 
    wxIcon ico = *(wxIcon*)icon; 

    wxIcon* ico = (wxIcon*)icon; 
    ... 
    ((EuTaskBarIcon*)taskbar)->SetIcon( *ico, str ); 

Figures. This is why I hate pointers (and therefore dislike C as a whole).

Failed to link function: +get_staticbitmap 
Failed to link procedure: +set_mdi_child_title 
Failed to link procedure: +set_staticbitmap 
Failed to link variable: null_pen 
Failed to link variable: null_brush 

See export.exw. It uses the same methods as wrap.exw to fish out all the routines and dump them into wat_dll\exports.lbc. So they're in exports.lbc, but they're not showing up in the final dll, for some reason. I just updated export.exw to output null_pen and null_brush, but they're still not showing up. And with the recent addition of wxTaskBarIcon.cpp, the list gets longer:

Failed to link function: +get_staticbitmap 
Failed to link procedure: +set_mdi_child_title 
Failed to link procedure: +set_staticbitmap 
Failed to link function: +new_wxTaskBarIcon 
Failed to link function: +get_taskbar_menu 
Failed to link procedure: +set_taskbar_icon 
Failed to link variable: null_pen 
Failed to link variable: null_brush 

-Greg

5. Re: wxTaskBarIcon help

• Posted by ghaberek (admin) Feb 18, 2009
• 1183 views

mattlewis said...

Ok, the problem is that the regex is looking for an open paren immediately after the name. The functions and procedures have a space before the paren, and the variables, of course, don't have parenthesis at all.

I think the export generation should look at wxeud.e (which is what the makefile does), since it provides a double check, and ensures that everything that it wants to see is actually exported. Omitting an export 'silently' fails until wxEuphoria tries to use it, while exporting something that hasn't been compiled causes a linker error. From makefile.wat:

    grep -hP "=\s+wx_define_c_" wxeud.e | sed -re "s/.*\"(.*)\".*/EXPORT \1=_\1/" > wat_dll\exports.lbc 

The first regex finds the lines, and the second one generates the line in exports.lbc. Sheesh, just install gnuwin32 already.

Cool. I kept seeing you mention grep/sed for generating exports, but I never knew what that was all about. I'll install GnuWin32. It's probably for the best anyway. I'm sick of trying to "figure it out" with the Windows utilities like type and find.

-Greg

7. Re: wxTaskBarIcon help

• Posted by ghaberek (admin) Feb 18, 2009
• 1032 views

Okay... now all the exports are fixed.

9. Re: wxTaskBarIcon help

• Posted by ghaberek (admin) Feb 18, 2009
• 1108 views

It is. Cheap and dirty all the way.

I downloaded the gnuwin32 package maintenance utility. It's where the "Download All" link took me.

-Greg