The manipulations needed to use for another platform

tomy

Thank you two very much.

I'd used these in my code:

setFixedHeight(sizeHint().height());
setFixedWidth(sizeHint().width());

I removed them. Do you think the problem is solved now?

To summarize the last part:
So we can write any excellent app (even for publishing in the competitive world market) using C++ on the Qt Creator IDE for all Windows, iOS and Android platforms, and writing the code is the only hard stage.
After running the app successfully for Windows, we can switch kits for both other platforms and make files for iOS and Android devices just by running the app, the simplest stage. Am I correct?

And one other question, when I made the installer for my app, there were .xml and .txt files and etc. When installing the app the user would be accustomed to the writer of the app and also would read other notes when installing the app.
We don't have such stages on Android platform. That is, if the creator doesn't put any sign of themselves on the "window" of the final running app, the programmer will be unknown to the user and it's not impossible that someone else claims that the app is written by them!!! Not?

J.Hilk

@tomy

removeing the fixed size property should solve the issue with not all items beeing displayed. However buttons/icons/texts etc might still be to small to be used with your fingers on a 'small' touchscreen. You'll have to test that.

So we can write any excellent app (even for publishing in the competitive world market) using C++ on the Qt Creator IDE for all Windows, iOS and Android platforms, and writing the code is the only hard stage.

Well, simplified, yes.

After running the app successfully for Windows, we can switch kits for both other platforms and make files for iOS and Android devices just by running the app, the simplest stage. Am I correct?

Usually yes, some few classes however are not cross platform compatible. You'll have to be carefull with 3rd party libs also. To Make sure they support your target platforms and that you link correctly depending on OS etc.

And one other question, when I made the installer for my app, there were .xml and .txt files and etc. When installing the app the user would be accustomed to the writer of the app and also would read other notes when installing the app.
We don't have such stages on Android platform. That is, if the creator doesn't put any sign of themselves on the "window" of the final running app, the programmer will be unknown to the user and it's not impossible that someone else claims that the app is written by them!!! Not?

Seems like you want a Splashscreen.
You can combine it with a timer, to guarantee a certain displaytime, in case your App is super fast loaded.

jsulm

@tomy You still didn't say whether you use layouts or not.
"someone else claims that the app is written by them" - you have the source code, right? If it is closed source how can anybody else claim to be the owner? Or are you going to open source your app? But even in this case you're the first one releasing the code.
So, is your app open source or not?
You can add an "About MYAPP" menu entry which shows who is the owner of your app, version and what ever else you want to show.

tomy

Thank you both very much.

And sorry, I've used a few layouts:

QHBoxLayout
QVBoxLayout

for my closed-code app.

tomy

And may I ask what process should I start for making the app work for iOS too?

J.Hilk

@tomy said in The manipulations needed to use for another platform:

And may I ask what process should I start for making the app work for iOS too?

I'll quote apple here

To develop with the iOS SDK and Xcode, you must have an Intel-based Mac running Mac OS X Snow Leopard or later and you must be registered as an Apple Developer.

tomy

@J.Hilk

So I need two tools: iOS SDK and Xcode
and an OS: Mac OS X on a PC using an Intel CPU
and registering. (this one may not be easy because of the bans against us!)

jsulm

@tomy You need a Mac, not a PC :-) MacOS is only running on MacBooks, MacMinis, iMacs and what else is produced by Apple. So, you will need to by new hardware.

tomy

Ow my God, in this bad economic situation do I need to buy an Apple product!? (They are all expensive)

Does it mean all iOS developer have an apple product (say an Apple laptop)?

J.Hilk

@tomy

I think they do,

I bought an iMac just to be able to code for my phone...

But you could potentially create your code/projet and send it to a company/friend to be compiled. I think there are some services for that.

VRonin

@tomy There are services online that build and deploy for you, the most popular is probably travis CI

tomy

I have an iPhone, can't it be used for that? (I don't think so!)

And what should I send for a friend or a local or online service/company please? The source code!?

I don't like to create open source app for now (at least).

VRonin

@tomy Yes, the only way to build is from source code. To keep it closed source travis CI has plans starting from 69$ per month (and I honestly don't see reasons to move to the more expensive plans).

tomy

@VRonin

Thank you.
Is the process on an Apple laptop running Mac OS X, the same as on Windows? That is, we install Qt Creator there, then set the tools (SDK and Xcode) there and copy the source code, then it creates an .ipa file to setup on an iDevice?

That is, we just supply the requirements and then run the code for making an app for Apple products, yeah?

VRonin

To deploy it to non-developer iOS devices you'll also need a developer license which is 100$ per year to Apple (yes, it's outrageous, I know)

tomy

@VRonin
Yeah, indeed. And that is why Apple Inc. is richer day by day.

One question on the benefits the developer gains: Does publishing the apps only on App Store give the developers some financial benefits afterwards?

VRonin

Not unless you include some income generating source in your app, an add banner or things like that

tomy

Does it mean if I some day, for example, create an iOS app that doesn't show any ads when working, the App Store may buy it from me?

VRonin

@tomy said in The manipulations needed to use for another platform:

Does it mean if I some day, for example, create an iOS app that doesn't show any ads when working, the App Store may buy it from me?

No, that won't be the case but basically if you only want to release free software with no ads on the App store you are going to be in the red for the 100$ developer fee per year

tomy

Sorry for the misunderstanding but I didn't mean a free app.

For example, consider I have a good app without ads. If I release it on App Store, does it (the Apple) buys it from me, or no, App Store is like an exhibition that someone else may have the desire to use the app and want to buy it from me?