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306 lines
12 KiB
ObjectPascal
306 lines
12 KiB
ObjectPascal
{
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$Id$
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This file extracted from the GTK 1.2 tutorial.
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Section 4.3
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Converted from C to Pascal by Thomas E. Payne
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}
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program Tut4_3;
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{$mode objfpc}
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uses
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glib,gdk,gtk,sysutils;
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function delete_event (widget : pGtkWidget ; event: pGdkEvent; data: pgpointer ): integer; cdecl;
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begin
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gtk_main_quit();
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delete_event:=0;
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end;
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{ * Make a new hbox filled with button-labels. Arguments for the
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* variables we're interested are passed in to this function.
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* We do not show the box, but do show everything inside. }
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function make_box(homogeneous: boolean;
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spacing : LONGINT;
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expand : boolean;
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fill : boolean;
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padding : LONGINT ):pGtkWidget; cdecl;
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var
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box, button : pGtkWidget; //GtkWidget is the storage type for widgets
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padstr : string;
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ppadstr : Pchar;
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begin
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//* Create a new hbox with the appropriate homogeneous
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//* and spacing settings */}
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box := gtk_hbox_new (homogeneous, spacing);
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//* Create a series of buttons with the appropriate settings */
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button := gtk_button_new_with_label ('gtk_box_pack');
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gtk_box_pack_start (GTK_BOX (box), button, expand, fill, padding);
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gtk_widget_show (button);
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button := gtk_button_new_with_label ('(box,');
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gtk_box_pack_start (GTK_BOX (box), button, expand, fill, padding);
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gtk_widget_show (button);
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button := gtk_button_new_with_label ('button,');
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gtk_box_pack_start (GTK_BOX (box), button, expand, fill, padding);
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gtk_widget_show (button);
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//* Create a button with the label depending on the value of
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//* expand. */}
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if (expand = TRUE) then
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button := gtk_button_new_with_label ('TRUE,')
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else
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button := gtk_button_new_with_label ('FALSE,');
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gtk_box_pack_start (GTK_BOX (box), button, expand, fill, padding);
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gtk_widget_show (button);
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//* This is the same as the button creation for "expand"
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//* above, but uses the shorthand form. */}
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if fill then
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button := gtk_button_new_with_label ('TRUE,')
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else
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button := gtk_button_new_with_label ('FALSE,');
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gtk_box_pack_start (GTK_BOX (box), button, expand, fill, padding);
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gtk_widget_show (button);
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padstr := InttoStr(padding)+');';
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ppadstr := stralloc(length(padstr)+1);
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strpcopy(ppadstr,padstr);
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button := gtk_button_new_with_label (ppadstr);
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gtk_box_pack_start (GTK_BOX (box), button, expand, fill, padding);
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gtk_widget_show (button);
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make_box := box;
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end; //make_box
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var
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window,button,box1,box2,separator,label_,quitbox : pGtkWidget;
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which : integer;
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begin
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//* Our init, don't forget this! :) */
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gtk_init (@argc, @argv);
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if (argc <> 2) then
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begin
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writeln (stderr, 'usage: packbox num, where num is 1, 2, or 3.');
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//* This just does cleanup in GTK and exits with an exit status of 1. */
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gtk_exit (1);
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end;
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which := StrtoInt(argv[1]); //use params
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//* Create our window */
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window := gtk_window_new (GTK_WINDOW_TOPLEVEL);
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//* You should always remember to connect the destroy signal to the
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//* main window. This is very important for proper intuitive
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//* behavior */
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gtk_signal_connect (pGTKOBJECT (window), 'delete_event',
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GTK_SIGNAL_FUNC (@delete_event), NULL);
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gtk_container_set_border_width (GTK_CONTAINER (window), 10);
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//* We create a vertical box (vbox) to pack the horizontal boxes into.
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//* This allows us to stack the horizontal boxes filled with buttons one
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//* on top of the other in this vbox. */
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box1 := gtk_vbox_new (FALSE, 0);
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//* which example to show. These correspond to the pictures above. */
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case which of
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1: begin
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//* create a new label_. */
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label_ := gtk_label_new ('gtk_hbox_new (FALSE, 0);');
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//* Align the label_ to the left side. We'll discuss this function and
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//* others in the section on Widget Attributes. */
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gtk_misc_set_alignment (GTK_MISC (label_), 0, 0);
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//* Pack the label_ into the vertical box (vbox box1). Remember that
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//* widgets added to a vbox will be packed one on top of the other in
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//* order. */
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gtk_box_pack_start (GTK_BOX (box1), label_, FALSE, FALSE, 0);
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//* Show the label_ */
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gtk_widget_show (label_);
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//* Call our make box function - homogeneous = FALSE, spacing = 0,
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//* expand = FALSE, fill = FALSE, padding = 0 */
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box2 := make_box (FALSE, 0, FALSE, FALSE, 0);
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gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
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gtk_widget_show (box2);
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//* Call our make box function - homogeneous = FALSE, spacing = 0,
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//* expand = FALSE, fill = FALSE, padding = 0 */
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box2 := make_box (FALSE, 0, TRUE, FALSE, 0);
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gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
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gtk_widget_show (box2);
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//* Args are: homogeneous, spacing, expand, fill, padding */
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box2 := make_box (FALSE, 0, TRUE, TRUE, 0);
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gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
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gtk_widget_show (box2);
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//* Creates a separator, we'll learn more about these later,
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//* but they are quite simple. */
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separator := gtk_hseparator_new ();
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//* Pack the separator into the vbox. Remember each of these
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//* widgets are being packed into a vbox, so they'll be stacked
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//* vertically. */
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gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 5);
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gtk_widget_show (separator);
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//* Create another new label, and show it. */
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label_ := gtk_label_new ('gtk_hbox_new (TRUE, 0);');
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gtk_misc_set_alignment (GTK_MISC (label_), 0, 0);
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gtk_box_pack_start (GTK_BOX (box1), label_, FALSE, FALSE, 0);
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gtk_widget_show (label_);
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//* Args are: homogeneous, spacing, expand, fill, padding */
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box2 := make_box (TRUE, 0, TRUE, FALSE, 0);
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gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
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gtk_widget_show (box2);
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//* Args are: homogeneous, spacing, expand, fill, padding */
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box2 := make_box (TRUE, 0, TRUE, TRUE, 0);
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gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
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gtk_widget_show (box2);
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//* Another new separator. */
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separator := gtk_hseparator_new ();
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//* The last 3 arguments to gtk_box_pack_start are:
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//* expand, fill, padding. */
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gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 5);
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gtk_widget_show (separator);
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end;
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2: begin
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//* Create a new label, remember box1 is a vbox as created
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//* near the beginning of main() */
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label_ := gtk_label_new ('gtk_hbox_new (FALSE, 10);');
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gtk_misc_set_alignment (GTK_MISC (label_), 0, 0);
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gtk_box_pack_start (GTK_BOX (box1), label_, FALSE, FALSE, 0);
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gtk_widget_show (label_);
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//* Args are: homogeneous, spacing, expand, fill, padding */
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box2 := make_box (FALSE, 10, TRUE, FALSE, 0);
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gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
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gtk_widget_show (box2);
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//* Args are: homogeneous, spacing, expand, fill, padding */
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box2 := make_box (FALSE, 10, TRUE, TRUE, 0);
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gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
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gtk_widget_show (box2);
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separator := gtk_hseparator_new ();
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//* The last 3 arguments to gtk_box_pack_start are:
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//* expand, fill, padding. */
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gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 5);
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gtk_widget_show (separator);
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label_ := gtk_label_new ('gtk_hbox_new (FALSE, 0);');
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gtk_misc_set_alignment (GTK_MISC (label_), 0, 0);
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gtk_box_pack_start (GTK_BOX (box1), label_, FALSE, FALSE, 0);
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gtk_widget_show (label_);
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//* Args are: homogeneous, spacing, expand, fill, padding */
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box2 := make_box (FALSE, 0, TRUE, FALSE, 10);
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gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
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gtk_widget_show (box2);
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//* Args are: homogeneous, spacing, expand, fill, padding */
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box2 := make_box (FALSE, 0, TRUE, TRUE, 10);
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gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
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gtk_widget_show (box2);
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separator := gtk_hseparator_new ();
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//* The last 3 arguments to gtk_box_pack_start are: expand, fill, padding. */
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gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 5);
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gtk_widget_show (separator);
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end;
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3: begin
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//* This demonstrates the ability to use gtk_box_pack_end() to
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//* right justify widgets. First, we create a new box as before. */
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box2 := make_box (FALSE, 0, FALSE, FALSE, 0);
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//* Create the label_ that will be put at the end. */
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label_ := gtk_label_new ('end');
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//* Pack it using gtk_box_pack_end(), so it is put on the right
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//* side of the hbox created in the make_box() call. */
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gtk_box_pack_end (GTK_BOX (box2), label_, FALSE, FALSE, 0);
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//* Show the label_. */
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gtk_widget_show (label_);
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//* Pack box2 into box1 (the vbox remember ? :) */
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gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
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gtk_widget_show (box2);
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//* A separator for the bottom. */
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separator := gtk_hseparator_new ();
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//* This explicitly sets the separator to 400 pixels wide by 5 pixels
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//* high. This is so the hbox we created will also be 400 pixels wide,
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//* and the "end" label_ will be separated from the other labels in the
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//* hbox. Otherwise, all the widgets in the hbox would be packed as
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//* close together as possible. */
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gtk_widget_set_usize (separator, 400, 5);
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//* pack the separator into the vbox (box1) created near the start
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//* of main() */
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gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 5);
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gtk_widget_show (separator);
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end;
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end; //case
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//* Create another new hbox.. remember we can use as many as we need! */
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quitbox := gtk_hbox_new (FALSE, 0);
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//* Our quit button. */
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button := gtk_button_new_with_label ('Quit');
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//* Setup the signal to destroy the window. Remember that this will send
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//* the "destroy" signal to the window which will be caught by our signal
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//* handler as defined above. */
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gtk_signal_connect_object (pGTKOBJECT (button), 'clicked',
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GTK_SIGNAL_FUNC (@gtk_main_quit),
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GTK_OBJECT (window));
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//* Pack the button into the quitbox.
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//* The last 3 arguments to gtk_box_pack_start are:
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//* expand, fill, padding. */
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gtk_box_pack_start (GTK_BOX (quitbox), button, TRUE, FALSE, 0);
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//* pack the quitbox into the vbox (box1) */
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gtk_box_pack_start (GTK_BOX (box1), quitbox, FALSE, FALSE, 0);
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//* Pack the vbox (box1) which now contains all our widgets, into the
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//* main window. */
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gtk_container_add (GTK_CONTAINER (window), box1);
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//* And show everything left */
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gtk_widget_show (button);
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gtk_widget_show (quitbox);
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gtk_widget_show (box1);
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//* Showing the window last so everything pops up at once. */
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gtk_widget_show (window);
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//* And of course, our main function. */
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gtk_main ();
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//* Control returns here when gtk_main_quit() is called, but not when
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//* gtk_exit is used. */
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//return(0);
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end. $Log$
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end. Revision 1.2 2000-07-13 11:33:18 michael
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end. + removed logs
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end.
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}
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