GTK+ Forums

Bernard · Joined: 31 Jul 2008 Posts: 2

Hi,
I'm currently porting a game originally written for Win32 to Linux. I am currently trying to implement MessageBox, and this is where GTK comes in.

Code: (C++)

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int MessageBox(HWND hwnd, const char* text, const char* caption, UINT type)
{
GtkWidget *window = NULL;
GtkWidget *dialog = NULL;

gtk_init(&gtkArgc, &gtkArgv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
g_signal_connect(G_OBJECT(window), "delete_event", G_CALLBACK(delete_event), NULL);
g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(destroy), NULL);
// gcallback calls gtk_main_quit()
gtk_init_add((GtkFunction)gcallback, NULL);

if (type & MB_YESNO) {
dialog = gtk_message_dialog_new(GTK_WINDOW(window), GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_QUESTION, GTK_BUTTONS_YES_NO, text);
} else {
dialog = gtk_message_dialog_new(GTK_WINDOW(window), GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_INFO, GTK_BUTTONS_OK, text);
}

gtk_window_set_title(GTK_WINDOW(dialog), caption);
gint result = gtk_dialog_run(GTK_DIALOG(dialog));

gtk_main();

gtk_widget_destroy(dialog);

if (type & MB_YESNO) {
switch (result) {
default:
case GTK_RESPONSE_DELETE_EVENT:
case GTK_RESPONSE_NO:
return IDNO;
break;
case GTK_RESPONSE_YES:
return IDYES;
break;
}
}

return IDOK;
}

Now know that I have little to no experience with GTK; I am probably doing a lot of stuff The Wrong Way - if so, tell me! My problem is that the MessageBox hangs around (not being redrawn) until the program exits. If MessageBox is called straight again, the first MessageBox disappears. I really don't know what I'm doing, so I humbly request help.

It's probably worth noting that the app is using SDL/OpenGL, and this is the only GTK code that appears or is required.

Thanks in advance.

EDIT:Looks like this is the wrong forum. Sorry!

Lino · Familiar Face Joined: 27 Dec 2007 Posts: 26

try with this

Code: (Plaintext)

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//---------------------------------------------------------------------------
int MessageBox(HWND hWnd, LPCSTR lpText, LPCSTR lpCaption, UINT uType)
{
MSGBOXPARAMS p={0};

p.dwStyle = uType;
p.lpszText = lpText;
p.hwndOwner = hWnd;
p.lpszCaption = lpCaption;
return MessageBoxIndirect(&p);
}
//---------------------------------------------------------------------------
int MessageBoxIndirect(LPMSGBOXPARAMS p)
{
GtkWidget *w;
gint res;
GtkMessageType type;
GtkButtonsType btnType;
GtkImage *img;

if(p->dwStyle & MB_ICONERROR)
type = GTK_MESSAGE_ERROR;
else if(p->dwStyle & MB_ICONQUESTION)
type = GTK_MESSAGE_QUESTION;
else if(p->dwStyle & MB_ICONWARNING)
type = GTK_MESSAGE_WARNING;
else
type = GTK_MESSAGE_INFO;
if(p->dwStyle & MB_YESNO)
btnType = GTK_BUTTONS_YES_NO;
else
btnType = GTK_BUTTONS_OK;
w = gtk_message_dialog_new((GtkWindow *)p->hwndOwner,GTK_DIALOG_MODAL,type,btnType,p->lpszText);
gtk_window_set_title((GtkWindow *)w,p->lpszCaption);
if(p->lpszIcon != NULL){
img = (GtkImage *)gtk_image_new_from_pixbuf(LoadIcon(p->hInstance,p->lpszIcon,32,32,0));
gtk_widget_show((HWND)img);
gtk_message_dialog_set_image((GtkMessageDialog *)w,(GtkWidget *)img);
}
//gtk_message_dialog_format_secondary_text((GtkMessageDialog *)w,lpText);
gtk_widget_show (w);
res = gtk_dialog_run((GtkDialog *)w);
gtk_widget_destroy(w);
switch(res){
case GTK_RESPONSE_OK:
return IDOK;
case GTK_RESPONSE_NO:
return IDNO;
case GTK_RESPONSE_YES:
return IDYES;
}
return 0;
}

Bernard · Joined: 31 Jul 2008 Posts: 2

Hey, thanks for your reply.

hwnd is never a valid value, so your example as written segfaults. I replaced it for NULL, and the same behaviour as mine occurs. For what it's worth, when I use a non-modal dialog it seems to work okay, but I just couldn't figure out how to get the results out of it. I checked the gtk docs but couldn't find it.

EDIT:

Nevermind, I got it.