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• Simple C++ classes question

  - by Without me Its just Aweso

  Its been a long time since i've done C++ and I'm running into some trouble with classes referencing eachother. right now I have something like: a.h class a { public: a(); bool skeletonfunc(b temp); } ==================== b.h class b { public: b(); bool skeletonfunc(a temp); } since each one needs a reference to the other i've found I cant do a #include of eachother at the top or i end up in a weird loop of sorts with the includes. So how can I make it so that a can use b and vice versa with out making a cyclical #include problem. thanks!

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• perl look behind question

  - by sfgroups

  Hi, I am trying extract number, from line has 'copies : 5' string. this look behind expression not working. echo "copies : 5" |perl -ne 'print $1 if /(\d+)(? Thanks

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• Send mass emails php (probably a shell question?)

  - by Rob

  I've got 80,000 users on my site and i've recently turned away from the forum script i've been using and built something very simple myself that works just as well (the forum script was too bloated and resource intensive for my simple site) The only thing i've lost is the ability to mass email all my members. So i'm looking to come up with a script to do it myself. After looking around (including questions on here) I decided using Swift Mailer would be a good idea. However i've been through all the documentation and can't see how to send say "100 at a time" and i'm not sure how to go about it. To put it simply. I have an admin panel with a form with two inputs "subject" and "message". When I click submit what is the safest way for me to send 80,000 emails without crashing my server or being marked as spam? I'm on quite a beefy dedicated server so don't have the problems associated with shared servers. Thanks in advance for any advice!

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• question about sizeof

  - by davit-datuashvili

  can anybody explain me what will be equivalent of this in java? for (i =(sizeof(num)*8-1); i; i–)

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• Stupid Question Regarding If-Else's Simultaneous Execution in C++ or C

  - by Kerb_z

  In C or C++ if ( x ) statement1; else statement 2; for what value of x both statements will be executed?? I know we can execute if-else together like this: if(1){ goto ELSE; } else{ ELSE: } Is there any way, like a value? (Which i think is not possible. Asking because someone is arguing!)

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• PHP validation question

  - by TaG

  How do I check and see if a user enters only numbers and is at least 4 numbers long using PHP?

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• F# "if" expression question

  - by Here

  Hi, I test some simple F# code for "if" expression, but the result is unexpected for me: > let test c a b = if c then a else b;; val test : bool -> 'a -> 'a -> 'a However > test true (printfn "a") (printfn "b");; a b val it : unit = () I'd expect only "a" is printed out but here I got both "a" and "b". I wonder why it comes out this way? Thanks!

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• Quick C Style Question

  - by LearningC

  Which is considered better style? int set_int(int *source){ *source = 5; return 0; } int main(){ int x*; set_int(x); } OR int *set_int(){ int *temp = NULL; temp = malloc(sizeof (int)); *temp = 5; return temp; } int main(){ int *x = set_int(); } Coming for a higher level programming background I gotta say I like the second version more. Any, tips would be very helpful. Still learning C.

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• A question about c/c++ syntax

  - by user198729

  I don't have the c++ environment yet right now. It seems to me that a function must be declared/defined first to be called in c. I mean, the declared/defined part should be ahead of the calling part. Is it the same in c++? Finally, it seems c++ is adding new features to itself, what about c, has it stopped being developed?

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• A question about ; in PHP

  - by user198729

  exit() is valid,but exit() echo 1; Will fail. Why?

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• Anyone help me! java basic question

  - by Max

  How can I get a specific value from an object? I'm trying to get a value of an instance for eg. ListOfPpl newListOfPpl = new ListOfPpl(id, name, age); Object item = newListOfPpl; How can I get a value of name from an Object item?? Even if it is easy or does not interest you can anyone help me??

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• Question about <foreach> task and the failonerror attribute?

  - by Mike M

  Hi guys, I have made a build file for the automated compilation of Oracle Forms files. An excerpt of the code is as follows: <target name="build" description="compiles the source code"> ... <foreach item="File" property="filename" failonerror="false" > <in> <items basedir="${source.directory}\${project.type}\Forms"> <include name="*.fmb" /> </items> </in> <do> <exec program="${forms.path}" workingdir="${source.directory}\${project.type}\Forms" commandline="module=${filename} userid=${username}/${password}@${database} batch=yes module_type=form compile_all=yes window_state=minimize" /> </do> </foreach> ... </target> The build file navigates to the directory containing the forms that the user desires fo compile and attempts to compile each form. The failonerror attribute is set to false so that the build file does not exit if a compilation error occurs. Unfortunately, however, though this prevents the build file from exiting when a compilation error occurs, it also appears to make the build file exit the task. This is a problem because, unless the form that does not compile successfully is the last to be tested (based on the filename of the form in alphanumerical decsending order), there will be one or more forms that the build file does not attempt to compile. So, for example, if the folder containing the forms that are desired to be compiled contains 10 forms and the first form does not compile successfully, the build file will not attempt to compile the remaining 9 forms (ie exit the task). Is there a way to make the build file attempt to compile remaining forms after encountering after failing to compile a form? Thanks in advance!

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• question on arrays in c++

  - by davit-datuashvili

  int java declaration of array like this int a[][]=new int[3][3] works but in c++ not why? please help me i have not used c++ a long time so please help me

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• SQL Performance Question (no where clause vs where column like '%')

  - by infocyde

  Hi, in a query, is there any performance hit by doing a where clause like so select bunchofstuff from sometable where column like '%' vs select bunchofstuff from sometable Building some dynamic queries, just curious. Thanks.

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• question about ? and : in c++

  - by assembler

  Why this statement : int a = 7, b = 8, c = 0; c = b>a?a>b?a++:b++:a++?b++:a--; cout << c; is not equal to : int a = 7, b = 8, c = 0; c = (b>a?(a>b?a++:b++):a++)?b++:a--; cout << c; and is equal to : int a = 7, b = 8, c = 0; c = b>a?(a>b?a++:b++):(a++?b++:a--); cout << c; Please give me some reason. Why ?

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• Offtopic : how can I see my deleted question? Why it was deleted, but not closed?

  - by Tom

  I know it is offtopic and I will delete my question as soon as I get any answer, but somebody deleted my question. The question was opened for the whole day, but when I got 3 reopens and edited my question for asking for 2 more reopens to reopen my question, somebody deleted my question. It was about efficiency during the programming. Why somebody deleted my question and didn't let to be it closed? I found there many good answers although it was closed and now I can see absolutely nothing so I suppose it was deleted. Can somebody tell me smth?

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• Interviewer question: What is the greatest strength and weakness of your development team? Any downside to ask?

  - by epignosisx

  I was wondering if this was a good question to ask a possible employer: What is the greatest strength and weakness of your development team? We all get this question when we are in an interview. So why not ask them? It's not just to annoy them. I think it is a very good question. By asking this question to future employers we could find out about the team and how this strength or weakness could affect us. What do you think? Do you see any downside to asking this question?

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• Flex Canvas child Randomly resizes

  - by BS_C3

  Hi! I have an application with a viewstack that contains all the components that need to be displayed. The navigation is defined in the main application. All the components are based on canvas. The main application looks like that: <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" xmlns:components="components.*"> <mx:VBox width="1024" height="100%" horizontalCenter="0" verticalGap="0" backgroundColor="#FFFFFF"> <mx:Image id="header" verticalAlign="top" /> <mx:ViewStack id="body" horizontalCenter="0" verticalCenter="0" width="100%" height="100%"> <components:HomePage id="hp" width="100%"/> <components:CollectionSelection id="cs" width="100%"/> <components:SearchEngine id="se" width="100%"/> <components:SearchResult id="sr" width="100%"/> <components:Tray id="tr" width="100%"/> <components:Order id="or" width="100%"/> </mx:ViewStack> <mx:Image id="footer" verticalAlign="bottom" maintainAspectRatio="false" width="100%"/> </mx:VBox> </mx:Application> I'm getting a strange behaviour from the TRAY component. Here's the code for component Tray (I've only left the display info): <mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:Image id="bg" horizontalCenter="0" verticalCenter="0" width="100%" height="100%" maintainAspectRatio="false"/> <mx:HBox width="100%"> <mx:Button x="20" y="20" label="BACK"/> <mx:Spacer width="100%"/> <mx:LinkBar itemClick="linkbar_itemClick(event)" styleName="GLBLinkBTN" separatorColor="#FFFFFF" separatorWidth="1" > <mx:dataProvider> <mx:Object label="CLEAR"/> <mx:Object label="LOGOUT"/> </mx:dataProvider> </mx:LinkBar> </mx:HBox> <mx:VBox id="mainBox" horizontalCenter="0" verticalCenter="0" verticalGap="0"> <mx:HBox width="100%" height="50" backgroundColor="#60524D" verticalAlign="bottom" paddingBottom="5"> <mx:Label styleName="TRTitle" paddingLeft="15"/> <mx:Spacer width="100%"/> <mx:Label styleName="TRItems" paddingRight="15"/> </mx:HBox> <mx:HorizontalList id="hlist" dataProvider="{TrayData.instance.itemsCollection}" columnCount="{TrayData.instance.hlistColumns}" rowCount="1" itemRenderer="components.TrayItem" horizontalScrollPolicy="off" rollOverColor="#FFFFFF" selectionColor="#FFFFFF" horizontalCenter="0" verticalCenter="0" borderStyle="none" horizontalScrollPosition="{TrayData.instance.hsPosition}" /> <mx:HBox width="100%" backgroundColor="#E7DDDB" height="40" verticalAlign="middle" paddingLeft="20" paddingRight="20"> <mx:Box width="25" verticalAlign="middle" horizontalAlign="left"> <mx:Button id="leftBtn" /> </mx:Box> <mx:Spacer width="100%"/> <mx:Box width="25" verticalAlign="middle" horizontalAlign="right"> <mx:Button id="rightBtn" /> </mx:Box> </mx:HBox> </mx:VBox> </mx:Canvas> All the components are displaying properly. However, sometimes, randomly, the vbox "mainBox" in the tray component is not displaying as it should: the horizontallist shrinks and instead of fully displaying its items, I get horizontal and vertical scrollbars for each item... I'm currently trying to reproduce this behaviour (to get a print screen) but right know, it's working fine... -_-' As soon as I get it work as it shouldn't, I'll upload an image. Here's the code for the itemRenderer (just in case...): <mx:VBox xmlns:mx="http://www.adobe.com/2006/mxml" > <mx:HBox width="100%" paddingTop="0" paddingBottom="0" paddingRight="3"> <mx:Spacer width="100%"/> <mx:Box width="14" height="14" verticalAlign="middle" horizontalAlign="center"> <mx:Button width="8" height="8"/> </mx:Box> </mx:HBox> <mx:VBox paddingLeft="20" paddingRight="20" verticalGap="15" paddingBottom="15"> <mx:Canvas id="thumbnail"> <mx:Image id="thumbnailBG" /> <mx:Image id="thumbnailIM" /> </mx:Canvas > <mx:VBox width="100%" verticalGap="7"> <mx:HBox width="100%" height="13"> <mx:Label width="74" opaqueBackground="#ECE5E2"/> <mx:Label paddingBottom="5"/> </mx:HBox> <mx:HBox width="100%" height="13"> <mx:Label width="74" opaqueBackground="#ECE5E2"/> <mx:Label /> </mx:HBox> <mx:HBox width="100%" height="13"> <mx:Label width="74" opaqueBackground="#ECE5E2"/> <mx:Label /> </mx:HBox> <mx:HBox width="100%" height="13"> <mx:Label width="74"opaqueBackground="#ECE5E2"/> <mx:Label /> </mx:HBox> <mx:HBox width="100%" height="13"> <mx:Label width="74" opaqueBackground="#ECE5E2"/> <mx:Label /> </mx:HBox> <mx:HBox width="100%" height="13"> <mx:Label width="74" opaqueBackground="#ECE5E2"/> <mx:Label /> </mx:HBox> <mx:HBox width="100%" height="13"> <mx:Label width="74" opaqueBackground="#ECE5E2"/> <mx:Label /> </mx:HBox> <mx:HBox width="100%" height="13"> <mx:Label width="74" opaqueBackground="#ECE5E2"/> <mx:Label /> </mx:HBox> </mx:VBox> <mx:Button /> </mx:VBox> </mx:VBox> Your help would really be appreciated. Regards, BS_C3

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• Flex 3 - Style not applying completely on dynamically created tabs in TabNavigator

  - by user254177

  When I create a tab dynamically via ActionScript, the style for the newly created (and selected) tab get applied to the skins, but not the text, unless I click on another tab and then click back to it. This is the A/S, MXML and CSS code I am using: private function clickAddTabHandler(event:Event):void{ var vbox:VBox = new VBox; var tab:Canvas = new (Canvas); vbox.label = "Select Location"; vbox.addChild(tab); tabBar.addChild(vbox); tabBar.selectedIndex = tabBar.numChildren-1; } .tabNavigator { disabledSkin: Embed(source="assets/skins/TabBar-tab_disabledSkin.png", scaleGridTop=1, scaleGridLeft=20, scaleGridBottom=18, scaleGridRight=32); downSkin: Embed(source="assets/skins/TabBar-tab_downSkin.png", scaleGridTop=1, scaleGridLeft=20, scaleGridBottom=18, scaleGridRight=32); overSkin: Embed(source="assets/skins/TabBar-tab_overSkin.png", scaleGridTop=1, scaleGridLeft=20, scaleGridBottom=18, scaleGridRight=32); upSkin: Embed(source="assets/skins/TabBar-tab_upSkin.png", scaleGridTop=1, scaleGridLeft=20, scaleGridBottom=18, scaleGridRight=32); selectedDisabledSkin: Embed(source="assets/skins/TabBar-tab_selectedDisabledSkin.png", scaleGridTop=1, scaleGridLeft=20, scaleGridBottom=18, scaleGridRight=32); selectedUpSkin: Embed(source="assets/skins/TabBar-tab_selectedUpSkin.png", scaleGridTop=1, scaleGridLeft=20, scaleGridBottom=18, scaleGridRight=32); selectedOverSkin: Embed(source="assets/skins/TabBar-tab_selectedUpSkin.png", scaleGridTop=1, scaleGridLeft=20, scaleGridBottom=18, scaleGridRight=32); selectedDownSkin: Embed(source="assets/skins/TabBar-tab_selectedUpSkin.png", scaleGridTop=1, scaleGridLeft=20, scaleGridBottom=18, scaleGridRight=32); textAlign: left; paddingLeft: 20; paddingRight: 20; fontSize: 11; fontFamily: Helvetica Neue; color: #FFFFFF; textRollOverColor: #FFFFFF; } .tabNavigatorSelected { textAlign: left; paddingLeft: 20; paddingRight: 20; fontSize: 11; fontFamily: Helvetica Neue; color: #135F9E; textRollOverColor: #135F9E; textSelectedColor: #135F9E; }

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• Resizing a container when child's visibility is changed?

  - by deux11

  When I set the visible property to false for a child in a container, how can I get the container to resize? In the example bellow, when clicking on "Toggle", "containerB" is hidden, but the main container's scrollable area is not resized. (I do not want to scroll through a lot of empty space.) <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:Script> <![CDATA[ public function toggle():void { containerB.visible = !containerB.visible; } ]]> </mx:Script> <mx:VBox height="300" width="200" horizontalAlign="center"> <mx:Button label="Toggle" click="toggle()" width="200"/> <mx:VBox id="containerA" height="400" width="150" horizontalAlign="center"> <mx:Button label="A" height="400" width="100"/> </mx:VBox> <mx:VBox id="containerB" height="400" width="150" horizontalAlign="center"> <mx:Button label="B" height="400" width="100"/> </mx:VBox> </mx:VBox>

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• Update multiple progress bar with gtk c++

  - by Yadira Suazo

  I need to output the i progress bars and update them all. But only the last one updates i times. This is the code: static void calculaPi (GtkButton * boton, Datos * dDatos){ const char * threads; GtkWidget * barra, *bot2, *button, *progress, *vbox; threads = gtk_entry_get_text(GTK_ENTRY(dDatos->dthreads )); gint ithreads = 1; ithreads = atoi(threads); barra = gtk_window_new(GTK_WINDOW_TOPLEVEL); gtk_window_set_title((GtkWindow *) barra, "Loteria de Threads"); gtk_window_set_default_size(GTK_WINDOW(barra), 300, ithreads*30); gtk_window_set_position(GTK_WINDOW(barra), GTK_WIN_POS_CENTER); button = gtk_button_new_with_label ("Click me!"); vbox = gtk_vbox_new (FALSE, 5); gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 5); gtk_container_add (GTK_CONTAINER (barra), vbox); for (gint i = 1 ; i <= ithreads; i++) { progress = gtk_progress_bar_new (); gtk_box_pack_start (GTK_BOX (vbox), progress, FALSE, FALSE, 5); g_object_set_data (G_OBJECT (barra), "pbar", (gpointer) progress); g_signal_connect (G_OBJECT (button), "clicked", G_CALLBACK (button_clicked), (gpointer) barra); } bot2 = gtk_button_new_with_label("Salir"); gtk_box_pack_start (GTK_BOX (vbox), bot2, FALSE, FALSE, 5); gtk_widget_set_size_request(bot2, 100, 35); g_signal_connect (G_OBJECT (bot2), "clicked", G_CALLBACK (destroy), G_OBJECT (barra)); gtk_widget_show_all(barra); gtk_main(); } static void button_clicked (GtkButton *button, GtkWidget *barra) { GtkProgressBar *progress; gdouble percent = 0.0; gtk_widget_set_sensitive (GTK_WIDGET (button), FALSE); progress = GTK_PROGRESS_BAR (g_object_get_data (G_OBJECT (barra), "pbar")); while (percent <= 100.0) { gchar *message = g_strdup_printf ("%.0f%% Complete", percent); gtk_progress_bar_set_fraction (progress, percent / 100.0); gtk_progress_bar_set_text (progress, message); while (gtk_events_pending ()) gtk_main_iteration (); g_usleep (500000); percent += 5.0; } }

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• Why did an interviewer ask me a question about people eating curry?

  - by Barry

  I had an interview question once which went... Interviewer: "Could you tell me how many people will eat curry for their dinner this evening" Me: "Er, sorry?" Interviewer: "Not the actual number just an estimate" I actually started to stumble my way through it, when I stopped and questioned what it had to do with anything about the job. The interviewer mumbled something and moved on. I guess the question is, what is the point in the ridiculous questions? I just don't understand why they started coming up with these things.

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• Hardware question; booting ubuntu off of USB flash drive?

  - by Kon

  I'm currently running ubuntu off of a USB 3.0 flash drive on my laptop, and I have another USB 3.0 flash drive I use for storing larger files that I need to access and whatnot. But the issue is that both of the usb 3.0 flash drives don't fit next to each other at all, so I'm forced to use another usb 2.0 port located in a different spot on my laptop. Now my question is that if I use a USB 3.0 hub will that slow my connections down at all? or cause some sort of interference? Another question I had which I was unable to find anywhere on the internet is if there was a USB 3.0 hub with more than one upstream connection? Thanks for your time!

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• D'où proviennent les revenus d'Opera? L'éditeur répond à la « question qu'on lui pose le plus souvent »

  D'où proviennent les revenus d'Opera ? L'éditeur répond à la « question qu'on lui pose le plus souvent » Depuis que le navigateur Opera est mis à disposition gratuitement, beaucoup de personnes se demandent d'où proviennent les revenus Opera Software, la firme norvégienne derrière le navigateur. Lassée ou amusée qu'on lui pose la question de manière récurrente, Opera a décidé de publier un billet de blog pour donner la réponse. La société dispose de deux sources de revenus différentes. La première est fondée sur le marché les systèmes embraqués (comme Opera pré-installé sur un téléphone mobile ou une set-top box) et l'autre vient du marché des PC. En ce qui ...

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• How to control number of leading spaces in a GtkWidget?

  - by Jack

  How do I set the leading spaces in a GtkWidget? as you can see into below imagem, username/password widgets are a bit away from horizontal line when the window begins My code: GtkWidget *window; GtkWidget *login_label; GtkWidget *username_label, *password_label; GtkWidget *username_entry, *password_entry; GtkWidget *ok_button; GtkWidget *hbox0, *hbox1, *hbox2, *hbox3; GtkWidget *vbox; gtk_init(&argc, &argv); window = gtk_window_new(GTK_WINDOW_TOPLEVEL); gtk_window_set_title(GTK_WINDOW(window), "hello"); gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER); gtk_window_set_default_size(GTK_WINDOW(window), 200, 300); g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(gtk_main_quit), NULL); login_label = gtk_label_new("Login"); username_label = gtk_label_new("Username: "); password_label = gtk_label_new("Password: "); username_entry = gtk_entry_new(); password_entry = gtk_entry_new(); gtk_entry_set_visibility(GTK_ENTRY(password_entry), FALSE); ok_button = gtk_button_new_with_label("Enter"); g_signal_connect(G_OBJECT(ok_button), "clicked", G_CALLBACK(print_username), ok_button); hbox0 = gtk_hbox_new(TRUE, 5); hbox1 = gtk_hbox_new(TRUE, 5); hbox2 = gtk_hbox_new(TRUE, 5); hbox3 = gtk_hbox_new(TRUE, 5); vbox = gtk_vbox_new(FALSE, 10); gtk_box_pack_start(GTK_BOX(hbox0), login_label, TRUE, FALSE, 5); gtk_box_pack_start(GTK_BOX(hbox1), username_label, TRUE, FALSE, 5); gtk_box_pack_start(GTK_BOX(hbox1), username_entry, TRUE, FALSE, 5); gtk_box_pack_start(GTK_BOX(hbox2), password_label, TRUE, FALSE, 5); gtk_box_pack_start(GTK_BOX(hbox2), password_entry, TRUE, FALSE, 5); gtk_box_pack_start(GTK_BOX(hbox3), ok_button, FALSE, FALSE, 5); gtk_box_pack_start(GTK_BOX(vbox), hbox0, FALSE, FALSE, 5); gtk_box_pack_start(GTK_BOX(vbox), hbox1, FALSE, FALSE, 5); gtk_box_pack_start(GTK_BOX(vbox), hbox2, FALSE, FALSE, 5); gtk_box_pack_start(GTK_BOX(vbox), hbox3, FALSE, FALSE, 5); gtk_container_add(GTK_CONTAINER(window), vbox); gtk_widget_show_all(window); gtk_main();

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