When modal window on top of mainwidget, i can still interact with mainwidger

masa4

I have some modal windows. They are inheriting QWidget and i have this in contructor:

setWindowFlags(Qt::Window | Qt::WindowTitleHint | Qt::CustomizeWindowHint | Qt::FramelessWindowHint);
    setWindowModality(Qt::ApplicationModal);

In my gui, when i click button, modal window is appearing but i can still click to button that on mainwidget. Are there any automatic way to prevent this or i need to manually handle it?

jsulm

@masa4 Please show your code. setWindowModality(Qt::ApplicationModal) should work.

masa4

@jsulm Sorry now i realized i commented out setWindowModality(Qt::ApplicationModal); Because when i have this line, i cannot interact with virtual keyboard which works like modal window as well. Actually i was expecting i should interact with my virtual keyboard because its the most top item i think.
And by the way i have this in my virtual keyboard constructor:

setWindowFlags(Qt::WindowStaysOnTopHint|Qt::X11BypassWindowManagerHint);

jsulm

@masa4 Does your virtual keyboard work with modal dialogs (QDialog::exec())?

masa4

@jsulm I dont know, all of my ui classes(including keyboard class) inherits QWidget. And I am opening modals&keyboard with show() function.

jsulm

@masa4 said in When modal window on top of mainwidget, i can still interact with mainwidger:

I dont know

You can try...

masa4

@jsulm You saying me, create a new ui class which inherits from QDialog and add a textbox to it, call it with exec() in a function call, , and try if keyboard will be clickable on it, am i right? Please confirm so i will try it.

jsulm

@masa4 There is no need to inherit enything. You can simply show https://doc.qt.io/qt-6/qinputdialog.html and check whether you can enter text using virtual keyboard...

masa4

@jsulm I tried but couldnt do it. I have eventfilter on my class for detecting lineedits etc focuses. So i can show my keyboard modal. I tried installing event filter to QInputDialog object and handling keyboard opening in eventfilter method but program crashes.

JonB

@masa4
So you have sundry extra code of your own, which may or may not affect. Since @jsulm asked you test with just a QInputDialog exec()ed modally why don't you do so in a standalone program?

masa4

@JonB But the main problem is right now; if i set Qt::ApplicationModal on my modals, it prevent interacting with mainwidget, which is good. But when i click the textedits on modal, my virtual keyboard show up as modal but i cant interact with keyboard.
If I dont set Qt::ApplicationModal, I can interact with keyboard but at the same time i can interact with mainwidget which is bad. My modal still beeing on top but i can click mainwidget buttons etc.
I tested QInputDialog, and it works well in normal situation. But I couldnt test it with keyboard since it requires additional steps/when i directly tried adding it to my event list, program crashes. I am not sure what was the problem

jsulm

@masa4 said in When modal window on top of mainwidget, i can still interact with mainwidger:

my virtual keyboard show up

Is this a virtual keyboard implemented by you or the one provided by Qt?

masa4

@jsulm by me

JonB

@masa4 said in When modal window on top of mainwidget, i can still interact with mainwidger:

I tested QInputDialog, and it works well in normal situation. But I couldnt test it with keyboard since it requires additional steps/when i directly tried adding it to my event list, program crashes. I am not sure what was the problem

So maybe you have an issue in your code? Did you run under debugger to see where/why crash is?

masa4

@JonB I can try to solve the issue but what we actually try to learn? If I will be able to use my keyboard with QInputDialog, what will be the next thing?

jsulm

@masa4 If it's your own virtual keyboard then you should maybe take a look at Qt virtual keyboard implementation to see how it is implemented.

masa4

@jsulm Its in qml, i dont know it

JonB

@masa4 So what sort of answer are you expecting here?

masa4

@JonB I didnt understand what you mean. I am asking how can I prevent interaction with mainwidget when modal window is open. But at the same time, I want to be able to interact with virtual keyboard which shows up when i click textedits on modal window.
If I add setWindowModality(Qt::ApplicationModal); to my modal window, it prevents interaction with mainwidget buttons. But I cant interact with keyboard also.

I want to interact with keyboard and prevent the interaction with mainwidget.

JonB

@masa4
What I am saying is: If the principle works OK with the Qt virtual keyboard but not with your own coded version, your own code crashes, you say earlier

I can try to solve the issue but what we actually try to learn? If I will be able to use my keyboard with QInputDialog, what will be the next thing?

and when @jsulm suggests you "take a look at Qt virtual keyboard implementation to see how it is implemented" you reply "Its in qml, i dont know it". If you take all this I don't know what sort of "answer" you think you are going to get from anyone here, I don't see how they can help. Anyway you can wait and see if anybody offers anything from here.