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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