QFileDialog is works but invisible

[Rudo1]

Hello,

I have build a project under Ubuntu 22.04 / Qt Creator and Qt 6.4.2 GCC 64 bit.

I have problem with QFileDialog, I use this code in my mainwindow.cpp

void FirstWindow::on_action1_triggered()
{
QStringList archive = QFileDialog::getOpenFileNames(this, "Archive",
QDir::rootPath());
const int mArchive = archive.size();
for (int i = 0; i < mArchive; ++i)
{
addMedia(archive.at(i));
}
}

I mean that it's works but visibility is invisible or have transparent backgraund.

[sierdzio]

You can remove the parent:

const auto archive = QFileDialog::getOpenFileNames(nullptr, "Archive", QDir::rootPath());

Downside of this is it won't center on your app window.

[Rudo1]

@sierdzio Thanks for answer, I try it but it doesn't work for me.
I have same problem it's work but it invisible.

[JonB]

@Rudo1
If the dialog is "invisible" how do you even know that it "works"? Maybe a screenshot of what you might mean by "invisible"?

[J.Hilk]

@JonB silly goose, @Rudo1 can't screen shot what's invisible. Dooh 🤪

[JonB]

@J-Hilk
I find it hard to believe that he calls getOpenFileNames(), says it works, but is completely invisible. How would he know it had "worked"? He talks about "or have transparent backgraund", maybe that means it shows something?

[J.Hilk]

@JonB you took my comment waaaay too serious

[JonB]

@J-Hilk
Ooohh! :) Well, maybe OP can post an invisible screenshot of the invisible dialog? ;-)

@Rudo1 You are using QFileDialog::getOpenFileNames(). Do you get the same result if you try getOpenFileName() [singular] or getSaveFileName()?

[Rudo1]

@JonB Yes, I tried it and nothing.

But I try it on other Ubuntu 22.04, with Qt 5.15.3 and it works.
I install Qt 5.15.3 on my ubuntu, and try it, but it doesn't working.

[Rudo1]

@JonB

[JonB]

@Rudo1
Hmm, not good! But I don't think I follow: yes you show some "invisibility", but getOpenFileNames() etc. are dialogs which pop up. They would not have your "button furniture", what you show is your own window/dialog, I don't see what you press to cause the "open files" dialog to pop up? I don't see how what you are showing demonstrates getOpenFileNames() is even being called?

[Rudo1]

@JonB I can show you if you give me your skype or other communication tool.

[JonB]

@Rudo1
No, we answer questions in the forum here, not personally.
You could explain how come QFileDialog::get...() pop up a file selector dialog while what you show seemingly has no popup dialog but instead shows a blank area in an existing widget. And you could also explain how FirstWindow::on_action1_triggered() gets called from what you show.

[Rudo1]

@JonB In my UI I have seperator, and on_action1_triggered is action of it, when I click to seperator I must have open QFileDialog and select .mp4 file in list. I try it in new project and it works, but in my project it doesn't work.

[JonB]

@Rudo1
Then I have no idea how what you describe relates to the screenshot you show, which has no popup QFileDialog.

If you say it works in a standalone program but not your code then you have the answer: you are presumably doing something wrong in your code. Reduce/build it up compared to a standalone example which works to find out what. Have you yet even verified it does call your FirstWindow::on_action1_triggered() at all?

[Rudo1]

@JonB Okay, thanks for your time, if I will solve this problem, I will write about it.

[JonB]

@Rudo1
I would start by placing a qDebug() statement in on_action1_triggered(), I am not convinced it is called.

[jsulm]

@JonB said in QFileDialog is works but invisible:

Then I have no idea how what you describe relates to the screenshot you show, which has no popup QFileDialog

It actually has: look at the bottom, it is next to "FirstWindow" and is called "Archive".

[JonB]

@jsulm OIC!! Very odd.

[Rudo1]

@JonB Thanks for help, I solved it, I called other method in my constructor and it was blocking everything.