Re: FW: about destruct class object?

[John Cupitt ng-london org uk]

¶À¼y Kason Huang wrote:
> if gtk is encapsulated with C++,i could rewrite some virtual function of a
class.
> in gtk lib,i know the widget class is equal to the v-table in C++.
> now my problem is like following:
> when i useing gtk_button_new(),i could create a rectangle 3D button.
> however i want  to create a ellipse 3D button,how to do that?
> for that purpose, i watch the source code of gtk lib,i find the draw
button function
> is gtk_button_draw();and
gtk_button_draw------>gtk_button_paint------->gtk_paint_box
> i want to rewrite the gtk_paint_box to create a ellipse 3D button, how to
do that? or having 
> another way to create a ellipse 3D button.

Hi Kason,

You can either subclass button and provide a new draw function (hard),
or you can use a theme to change the appearance of the regular gtk
button (easy). Lots of the pixmap themes, for example, have elliptical
buttons.

John



========================================================== 
Aelbert Cuyp 13 February - 12 May 2002 

For information and tickets: 
http://www.nationalgallery.org.uk/exhibitions/cuyp/