> No, wrong. Addresses are *passed* exactly like any other type is passed. Addresses can be *obtained* using the & operator. Hence: > > char jim; > char * fred; > fred = &jim; > > Means: > > "jim" is a variable of type "char" > "fred" is a variable of type "pointer to char" > Assign to "fred" the value obtained by applying the "take address >of" operation on "jim". Or "make fred point to jim" for short. Oh yes, I understand that. What made me crazy is because when I declare this: armazena = gtk_tree_store_new( NUM_COLUNAS_DADOS, G_TYPE_POINTER, G_TYPE_POINTER, G_TYPE_POINTER, G_TYPE_POINTER ); I thought: "Ok then, each column will store a pointer address, so, when I need to store one of then, I need to store it with the & operator" Finally, when I did this, it worked: int *a; gtk_tree_store_set( armazena, &inter,0, &a, -1); But, when I did this, I got it wrong and took me really long time to figure that it was wrong here: char *a; gtk_tree_store_set( armazena, &inter,0, &a, -1); The correct would be: gtk_tree_store_set( armazena, &inter,0, a, -1); Robert Pearce escreveu: > On Sun, 25 Mar 2007 05:17:50 -0300 Diogo wrote: >> It is a little confusing to me >> because I assume that POINTERS are address and address are passed using >> & key. > > No, wrong. Addresses are *passed* exactly like any other type is passed. Addresses can be *obtained* using the & operator. Hence: > > char jim; > char * fred; > fred = &jim; > > Means: > > "jim" is a variable of type "char" > "fred" is a variable of type "pointer to char" > Assign to "fred" the value obtained by applying the "take address of" operation on "jim". Or "make fred point to jim" for short. > > Of course, C++ goes and f*£$s with your understanding by _also_ using & to mean "pass by reference", where reference *is not* the same as address. This is one of many places where C++ is a very bad OO language. Its use of "polymorphism" is horribly broken. > _______________________________________________ > gtk-list mailing list > gtk-list@xxxxxxxxx > http://mail.gnome.org/mailman/listinfo/gtk-list > -- Diogo F. S. Ramos _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
