Introduction
This example covers a container called the GtkVPaned widget. The GtkVPaned container is a split plane with top and bottom sections separated by a divider. By default, the divider can be dragged up or down to alter the size of the split.
Source Code
/*
*File name: vpane.c
*/#include
#include/*– This function allows the program to exit properly when the window is closed –*/
gint destroyapp (GtkWidget *widget, gpointer gdata)
{
g_print (“Quitting…\n”);
gtk_main_quit();
return (FALSE);
}int main (int argc, char *argv[])
{
/*– Declare the GTK Widgets used in the program –*/
GtkWidget *window;
GtkWidget *vpane;
GtkWidget *text1;
GtkWidget *text2;gchar *buffer1 = “This is the top text pane.”;
gchar *buffer2 = “This is the lower text pane.”;/*– Initialize GTK –*/
gtk_init (&argc, &argv);/*– Create the new window –*/
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);/*– Create the horizontal pane –*/
vpane = gtk_vpaned_new();/*– Create two text areas –*/
text1 = gtk_text_new(NULL, NULL);
text2 = gtk_text_new(NULL, NULL);/*– Set text areas to be editable –*/
gtk_text_set_editable(GTK_TEXT (text1), TRUE);
gtk_text_set_editable(GTK_TEXT (text2), TRUE);/*– Connect the window to the destroyapp function –*/
gtk_signal_connect(GTK_OBJECT(window), “delete_event”, GTK_SIGNAL_FUNC(destroyapp), NULL);/*– Add the top text area to the hpane –*/
gtk_paned_add1(GTK_PANED(vpane), text1);/*– Add the lower text area to the hpane –*/
gtk_paned_add2(GTK_PANED(vpane), text2);/*– Add the vpane to the window –*/
gtk_container_add(GTK_CONTAINER(window), vpane);/*– Add some text to the window –*/
gtk_text_insert(GTK_TEXT(text1), NULL, NULL, NULL, buffer1, strlen(buffer1));
gtk_text_insert(GTK_TEXT(text2), NULL, NULL, NULL, buffer2, strlen(buffer2));/*– Set window border to zero so that text area takes up the whole window –*/
gtk_container_border_width (GTK_CONTAINER (window), 0);/*– Set the window to be 640 x 200 pixels –*/
gtk_window_set_default_size (GTK_WINDOW(window), 640, 200);/*– Set the window title –*/
gtk_window_set_title(GTK_WINDOW (window), “A Vertical Panel”);/*– Display the widgets –*/
gtk_widget_show(vpane);
gtk_widget_show(text1);
gtk_widget_show(text2);
gtk_widget_show(window);/*– Start the GTK event loop –*/
gtk_main();/*– Return 0 if exit is successful –*/
return 0;
}
Compile the Source Code
gcc -Wall -g vpane.c -o vpane `gtk-config –cflags` `gtk-config –libs`
Execute the Program
./vpane
