Re: Signals & Callbacks - Help!! Part 2

[jalkadir gosonic ca]

I am not an expert in GLIB, but, following your suggestion, I have added
the following variables. Notice that it is similar to the one in your
example.
--------
gchar strMsg;
strMsg = g_strdup("Under Comstruction ... ");

--------
However, this statement gives me an error that reads:

main.cpp: In function `int main(int, char**)':

main.cpp:25: error: invalid conversion from `gchar*' to `gchar'
main.cpp:83: error: invalid conversion from `gchar' to `void*'
main.cpp:83: error:   initializing argument 1 of `void g_free(void*)'

make.exe: *** [main.o] Error 1

Execution terminated
-------------


What am I doing wrong?

TIA
> jalkadir gosonic ca ha scritto lo scorso 09/07/2005 02:28:
>> Thank Yeti for your help, I really appreciate your input. However, due
>> to
>> my lack of experience on GTK+ I am afraid I would need something a bit
>> more tangible. Could you please provide me with a example or point me to
>> to a place where I could find examples of GTK+ software?
>>
>> Thanks in advance.
>
> Maybe this can help you.
> Cheers,
> Carlo
>
> #include <gtk/gtk.h>
>
> void on_btn_clicked (GtkButton *, gpointer);
>
> int main (int argc, char *argv[])
> {
>    GtkWidget *mainw;
>    GtkWidget *vbox;
>    GtkWidget *btn;
>    gchar     *text;
>
>    gtk_set_locale ();
>    gtk_init (&argc, &argv);
>
>    /* a very simple window with a button
>     */
>    mainw = gtk_window_new (GTK_WINDOW_TOPLEVEL);
>    gtk_widget_set_size_request (mainw, 400, -1);
>    gtk_window_set_title (GTK_WINDOW (mainw), "main");
>    gtk_window_set_position (GTK_WINDOW (mainw), GTK_WIN_POS_CENTER);
>
>    vbox = gtk_vbox_new (FALSE, 0);
>    gtk_widget_show (vbox);
>    gtk_container_add (GTK_CONTAINER (mainw), vbox);
>
>    btn = gtk_button_new_with_mnemonic ("Click me");
>    gtk_widget_show (btn);
>    gtk_box_pack_start (GTK_BOX (vbox), btn, FALSE, FALSE, 0);
>
>    g_signal_connect ((gpointer) mainw, "destroy",
>                      G_CALLBACK (gtk_main_quit),
>                      NULL);
>    /* here is your text
>     */
>    text = g_strdup ("your text");
>    g_signal_connect ((gpointer) btn, "clicked",
>                      G_CALLBACK (on_btn_clicked),
>                      (gpointer)text);
>
>    gtk_widget_show (mainw);
>
>    gtk_main ();
>
>    /* not really needed, because we are quitting here
>     */
>    g_free (text);
>
>    return 0;
> }
>
> void on_btn_clicked (GtkButton *btn, gpointer your_data)
> {
>    g_print ("%s\n", (gchar *)your_data);
> }
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