Re: [gtkmm] ImageLoader

[Claude Vaillancourt <clauva videotron ca>]

On Wed, 2002-12-25 at 20:11, Mortella wrote:
> >  
> > > 
> > 
> > Take a look at Gdk::Pixmap::create_from_xpm() family of methods.
> > 
> 
> yep...i know that function for a long long time but... 
> 
> Why it doesnt fits:
> Gdk::Pixmap *pmap = create_from_xpm(NULL,NULL,etc, filename);
> //former (gtk 1.2 ) NULLs were allowed to sign 'dont care' or default ... 
> (Do you mind to write a simple example pls. )
> 

Assuming you're inside a Gtk::Widget derived class
(from the wheelbarrow.cc example in the gtkmm/examples/window directory)
{
	const std::string &fname = "picture.xpm";
	const Glib::RefPtr<const Gdk::Drawable> drawable = get_window();
	const Gdk::Color transparent =
		Gtk::Widget::get_default_style()->get_bg(Gtk::STATE_NORMAL);
	Glib::RefPtr<Gdk::Bitmap> mask;
	const Glib::RefPtr<Gdk::Pixmap> pixmap = 
		Gdk::Pixmap::create_from_xpm(drawable, mask, 			transparent, fname);
}


> Other question: it always waits const std:string& does this mean I can not dynamically set a file's name ?
> Am not totally lamer just new in gtkmm.
> 
You can certainly pass a regular std::string, this 'const' only means
that the method will not modify it.

> thx
> morti
>