Re: how to draw something on GtkDrawingArea when I click a button?

[Amol Kulkarni <amolgkulkarni gmail com>]

gdk_draw_line takes GdkDrawable as first parameter.
try using drawing_area->window instead.


--
Regards,
Amol
On Fri, 2010-03-19 at 13:34 +0800, Tolic Ma wrote:
> Hi,everyone!
>
> I want to draw something on GtkDrawingArea when I click a GtkButton,but I
> don't know how to do this...
>
> this is my code(it doesn't work...):
>
> *void click_button(void){
>
>
> gdk_draw_line(drawing_area,drawing_area->style->white_gc,x,y,width+x,height+y);
>
> }
>
> int main(int argc,char *argv[]){
>    ...
>    g_signal_connect(button,"clicked",G_CALLBACK(click_button),NULL);
>    ...
> }*
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