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OK, so our app is pretty much done, but this main screen here that first starts, there's nothing

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going on here.

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So I play around with this for a couple of minutes and see what we can do here.

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So let's head back over to our code.

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And I'm just going to come down to the bottom here and let's go start screen and what do we want?

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Let's create a frame.

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Let's call it start frame.

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And it's a frame and it's going to be in root.

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And we want the width or the height to be four hundred and the width.

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To be four hundred.

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And so let's start framed hack this guy and we want to fill equals both and we want to expand equals

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one.

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All right, so that's good.

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Now, let's create a star label, so let's go start our label, and that's going to be a label and it's

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going to be in start frame and we want the text to equal what?

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Welcome to math flashcards, Derf.

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And we want the font to equal.

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Let's go Helvetica.

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Ticha, and we go and want the size to be, I say, 16 ish or maybe 18 ish, something like that, and

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let's just pack this on the screen.

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OK, and let's give this a pat why of like I don't know, 40 or so some space, um, let's create some

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buttons.

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Two flash cards, so let's go a underscore button, and that's stands for additions or add button and

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that's a button and we want it in start underscore frame and we want the text to equal edition flash

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cards and we want the command to equal add.

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And we can just pack this on the screen and let's give this a pad Y of like five or something.

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So this ad command, that's the same command that our menu fires right here.

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Remember our menus at the top of the screen.

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So it's just going to fire the math of the add flashcard thing.

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Right.

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So I'm just going to copy this and we need three more.

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One, two, three.

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And let's call this one the subtract button and button four, multiply the D button for divide.

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And here we can change this to subtraction and multiplication and then division and we need to change

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each of these functions.

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So let's go subtract.

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And this one is multiply.

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And this one is divide.

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OK, so I think that should work, let's save this and run it, see what I messed up.

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Oh, OK.

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Looks OK.

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Right.

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And if we click any of these things, oh, something has gone horribly wrong.

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We're not actually hiding this thing like we're doing with all the other frames.

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So we need to fix that real quick.

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So what do we call this thing, we called it the start frame, so I'm just going to copy that and head

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up to our hyd function right there and let's start framed OPAC, underscore or forget.

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OK, let's just save that and see if that fixed that little problem, I imagine it should.

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So now boom subtraction and that worked if we run it again.

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This kind of spot check, these additions that worked.

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In multiplication, OK, that one works properly, don't have to test these, but, you know, might

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as well.

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OK, so that worked well.

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Now what if we want to go back to the home screen?

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Let's make a little menu thing.

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Right in here that allows us to do that, this video is going a little bit long and we'll do that in

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the next video.