GTK+ Forums

montgoss · Joined: 12 Feb 2008 Posts: 4

I'm trying to pass some data through to a callback and I'm getting weird behavior. I have the type SudokuTile that has a member called "id". I'm trying to pass a pointer to a SudokuTile (one tile out of an array of them) into the callback. Right now, I'm just printing out the id to test. It's almost always 4. If I click the label fast enough, I can get some 5's and 6's in there too, but mostly 4... :?

So, what should go on Line 190-191 below?

Code: (C)

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/*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/

#include <gtk/gtk.h>
#include "stdio.h"

/*--------------------------------------------------------------------------------------------------*/
/* type definitions */
/*--------------------------------------------------------------------------------------------------*/

typedef struct
{
unsigned int id;
GtkWidget *mBoardWidget;
GtkWidget *mLabelBox;
GtkWidget *mEventBox;
GtkWidget *mTileLabel1;
GtkWidget *mTileLabel2;
GtkWidget *mTileLabel3;
gboolean editable;
gboolean penciled;
unsigned int color;
short the_value;
gboolean values[9];
} SudokuTile;

/*--------------------------------------------------------------------------------------------------*/
/* signal callbacks */
/*--------------------------------------------------------------------------------------------------*/

static void new_button_cb (GtkWidget * button, gpointer data);

static void check_button_cb (GtkWidget * button, gpointer data);

static void reset_button_cb (GtkWidget * button, gpointer data);

static void pause_button_cb (GtkWidget * button, gpointer data);

static void tile_button_cb (GtkWidget * button, gpointer tile_data);

static void popup_button_cb (GtkWidget * button, Popup * data);

void init_puzzle(void);

/*--------------------------------------------------------------------------------------------------*/
/* data */
/*--------------------------------------------------------------------------------------------------*/

GtkWidget *window; // main window

/* globals */
static SudokuTile mBoardTiles[81];

unsigned long mPuzzleID;
unsigned int mCurPuzzleRating;

/*--------------------------------------------------------------------------------------------------*/
/* main program */
/*--------------------------------------------------------------------------------------------------*/

int main (int argc, char **argv)
{
GtkWidget *notebook, *icon;
GtkWidget *box, *toolbar, *table, *details, *navigation, *w;
GtkWidget *vsep, *hsep;
GtkTreeViewColumn *column;
GtkWidget *widget;
GtkRcStyle *tile_style;
GdkColor tile_color_blk = {0, 0, 0, 0};
GtkToolItem *toolitem;
GtkListStore *liststore;
GtkTreeIter it;
SudokuTile *data;

unsigned int index;

gtk_init (&argc, &argv);

/* main window */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
g_signal_connect (G_OBJECT (window), "delete-event",
(GCallback) gtk_main_quit, NULL);
gtk_window_set_title (GTK_WINDOW (window), "Sudoku");

/* main notebook */
notebook = gtk_notebook_new ();
gtk_container_add (GTK_CONTAINER (window), notebook);
gtk_notebook_set_tab_pos (GTK_NOTEBOOK (notebook), GTK_POS_BOTTOM);

/* navigation */
box = gtk_vbox_new (FALSE, 0);
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), box,
gtk_image_new_from_stock (GTK_STOCK_INDEX,
GTK_ICON_SIZE_LARGE_TOOLBAR));
gtk_container_child_set (GTK_CONTAINER (notebook), box, "tab-expand",
TRUE, NULL);

/* puzzle board */
table = gtk_table_new( 11, 11, FALSE );
gtk_box_pack_start (GTK_BOX (box), table, FALSE, FALSE, 0);
hsep = gtk_hseparator_new();
gtk_table_attach( GTK_TABLE(table),
hsep,
0,
11,
3,
4,
GTK_SHRINK | GTK_FILL,
GTK_SHRINK | GTK_FILL,
0,
0 );
hsep = gtk_hseparator_new();
gtk_table_attach( GTK_TABLE(table),
hsep,
0,
11,
7,
8,
GTK_SHRINK | GTK_FILL,
GTK_SHRINK | GTK_FILL,
0,
0 );

vsep = gtk_vseparator_new();
gtk_table_attach( GTK_TABLE(table),
vsep,
3,
4,
0,
11,
GTK_SHRINK | GTK_FILL,
GTK_SHRINK | GTK_FILL,
0,
0 );
vsep = gtk_vseparator_new();
gtk_table_attach( GTK_TABLE(table),
vsep,
7,
8,
0,
11,
GTK_SHRINK | GTK_FILL,
GTK_SHRINK | GTK_FILL,
0,
0 );
for( index = 0; index < 81; index++ )
{
mBoardTiles[index].id = index;

mBoardTiles[index].mBoardWidget = gtk_frame_new(NULL);

mBoardTiles[index].mTileLabel1 = gtk_label_new( "123" );
mBoardTiles[index].mTileLabel2 = gtk_label_new( "456" );
mBoardTiles[index].mTileLabel3 = gtk_label_new( "789" );
gtk_label_set_markup( GTK_LABEL(mBoardTiles[index].mTileLabel1),
"123");
gtk_label_set_markup( GTK_LABEL(mBoardTiles[index].mTileLabel2),
"456");
gtk_label_set_markup( GTK_LABEL(mBoardTiles[index].mTileLabel3),
"789");

gtk_widget_set_size_request( mBoardTiles[index].mTileLabel1, 24, 10);
gtk_widget_set_size_request( mBoardTiles[index].mTileLabel2, 24, 10);
gtk_widget_set_size_request( mBoardTiles[index].mTileLabel3, 24, 10);
mBoardTiles[index].mLabelBox = gtk_vbox_new( TRUE, 0);
gtk_container_add( GTK_CONTAINER(mBoardTiles[index].mLabelBox), mBoardTiles[index].mTileLabel1 );
gtk_container_add( GTK_CONTAINER(mBoardTiles[index].mLabelBox), mBoardTiles[index].mTileLabel2 );
gtk_container_add( GTK_CONTAINER(mBoardTiles[index].mLabelBox), mBoardTiles[index].mTileLabel3 );

mBoardTiles[index].mEventBox = gtk_event_box_new();
gtk_container_add( GTK_CONTAINER(mBoardTiles[index].mEventBox), mBoardTiles[index].mLabelBox );

gtk_container_add( GTK_CONTAINER(mBoardTiles[index].mBoardWidget), mBoardTiles[index].mEventBox );

g_signal_connect( G_OBJECT(mBoardTiles[index].mEventBox), "button_press_event",
(GCallback)tile_button_cb, (gpointer)(&mBoardTiles[index]) );

gtk_table_attach( GTK_TABLE(table),
mBoardTiles[index].mBoardWidget,
(index%9)+((index/3)%3),
((index%9)+((index/3)%3)+1),
(index/9)+(index/27),
((index/9)+(index/27)+1),
GTK_SHRINK | GTK_FILL,
GTK_SHRINK | GTK_FILL,
0,
0 );
}

/* let's go! */
gtk_widget_show_all (window);
gtk_main ();

return 0;
}

/*--------------------------------------------------------------------------------------------------*/
/* signal callbacks */
/*--------------------------------------------------------------------------------------------------*/

static void new_button_cb (GtkWidget * button, gpointer data)
{
printf("new_button_cb\n");
init_puzzle();
}

/*--------------------------------------------------------------------------------------------------*/

static void check_button_cb (GtkWidget * button, gpointer data)
{
printf("check_button_cb\n");
}

/*--------------------------------------------------------------------------------------------------*/

static void reset_button_cb (GtkWidget * button, gpointer data)
{
printf("reset_button_cb\n");
}

/*--------------------------------------------------------------------------------------------------*/

static void pause_button_cb (GtkWidget * button, gpointer data)
{
printf("pause_button_cb\n");
}

/*--------------------------------------------------------------------------------------------------*/

static void tile_button_cb (GtkWidget * button, gpointer tile_data)
{
SudokuTile *this_tile = (SudokuTile *)tile_data;

printf("id = %d\n", this_tile->id);
}

Lindley · Familiar Face Joined: 19 Dec 2007 Posts: 13

I suggest you check the callback signature for button_press_event. You're missing a parameter.

montgoss · Joined: 12 Feb 2008 Posts: 4

Code: (C)
1	static void tile_button_cb(GtkWidget* button, GdkEventButton* event, gpointer tile_data)

That fixes it. I guess that would explain why it worked when I used a GtkButton widget but not when I used the GtkEventBox.