@Sachin-Bhatt My explanation: True evaluates to 1 in a numerical context. False evaluates to 0. So:

True +3 = 4 1 + 4 = 5 2 + False = 2

@CollinK80 said in Qt 6.2 'QtAndroid file not found error #include <QtAndroid> is not working....:

you need to edit CMakeLists.txt to tell it you want the AndroidExtras package

Well, this is how things work: if you need something you need to tell CMake that you need it, there is no magic. I don't see what is "ridiculous" about it.

@Olivier92m Hi! You should ask this QtCompany directly.
It also depends what license you want to use and how (open source/commercial, are you going to change Qt code or not).

@Lucky01
So far you have asked about Laravel and SQL in PHP. Why do you want to use this forum if you are using them and not Qt? Beats me.

@Paul-Colby thanks this is really helpful

Good news about this is that Qt has a nice balance in its bank account and these guys can make Qt better more quickly.

@SGaist Thank you very much for updating me.

@J-Hilk Thanks for info. I try to create a "Hello word" with external storage.

@jeremy_k Alright! d) says that if you provide your software as a download, then the download of the source (Qt's source in this specific case) can be hosted somewhere else. Good to know!

b) is the case with the written offer. But a) is the most relevant: It says that if you ship the object code (i.e. the application) in a physical product (and I would count an embedded device to be such a product) you need to ship the source code on a physical medium as well. Thus, download only wont cut it. Where I was mistaken in the details is that the physical medium does not have to be the same. But it has to be a "durable physical medium customarily used for software interchange". So, this means the Qt source does not have to be on the embedded device itself (or rather can't be as it is not "customarily used for software interchange"). A CD or DVD would certainly work. I would hope that a USB thumb drive or an SD card would to the trick as well.

@SGaist
when i try to use the bellow command
ninja && ninja install

ld: error: relocation R_X86_64_PC32 cannot be used against symbol TT_RunIns; recompile with -fPIC

defined in /usr/local/lib/libfreetype.a(truetype.o)
referenced by truetype.c
truetype.o:(tt_size_init_bytecode) in archive /usr/local/lib/libfreetype.a
clang++: error: linker command failed with exit code 1 (use -v to see invocation)

readelf -h libfreetype.a | grep 'Class|File|Machine'
File: libfreetype.a(ftsystem.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftdebug.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftinit.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftbase.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftbbox.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftbdf.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftbitmap.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftcid.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftfstype.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftgasp.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftglyph.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftgxval.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftmm.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftotval.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftpatent.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftpfr.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftstroke.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftsynth.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(fttype1.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftwinfnt.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(truetype.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(type1.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(cff.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(type1cid.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(pfr.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(type42.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(winfnt.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(pcf.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(bdf.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(sfnt.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(autofit.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(pshinter.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(raster.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(smooth.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftcache.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftgzip.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftlzw.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(ftbzip2.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(psaux.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64
File: libfreetype.a(psnames.o)
Class: ELF64
Machine: Advanced Micro Devices X86-64

@jsulm
sir,
thank you very much....

Hi, and welcome!

@guplasse said in Qt for commercial Use:

If i build my sofware with QT Open Source Licence, can i sell it ?

Yes, you can.

if yes what are the conditions ?

These are specified by the license. (Note: Some Qt modules are available under both the LGPL and GPL licenses; other modules are only available under the GPL license)

How should I mention that I am using QT ?

2 good places are:

In your software's documentation In an "About" dialog that is popped up by the GUI. (This is often placed under the "Help" menu)

if i have to buy QT, can i really do whatever i want with the source code ?

Yes, you can.

Hi and welcome to devnet,

Right from the commit that removed it:

Remove "fallback session management" With the Qt6 compatibility break, it can finally be removed. Closing windows (which might quit the application with quitOnLastWindowClosed() true, the default) acted contrary to the documentation of the commitDataRequest() signal, which could have been a hint. This removes the workaround API from the fix for QTBUG-49667 and also removes the problematic feature that it worked around.

@SGaist
sir,
sir, thank you very much for the clue you give.i fixed the problem in the application and it works fine.The working code is given below.

i did the following steps to fix the problem.

reduced the input volume by using QAudinput :: setVolume(0.009) function. converted the *data to to qint8 from uchar input_G->setVolume(0.009); xy_device = new XYSeriesIODevice(this,m_series); xy_device->open(QIODevice::WriteOnly); //if crash check m_series is null input_G->start(xy_device); } qint64 XYSeriesIODevice::writeData(const char *data, qint64 maxSize) { static const int resolution = 4; if (m_buffer.isEmpty()) { m_buffer.reserve(sampleCount); for (int i = 0; i < sampleCount; ++i) m_buffer.append(QPointF(i, 0)); } int start = 0; const int availableSamples = int(maxSize) / resolution; if (availableSamples < sampleCount) { start = sampleCount - availableSamples; for (int s = 0; s < start; ++s) m_buffer[s].setY(m_buffer.at(s + availableSamples).y()); } for (int s = start; s < sampleCount; ++s, data += resolution){ qreal y=qreal(qint8(*data))/qreal(128); m_buffer[s].setY(y*.75);} m_series->replace(m_buffer); return (sampleCount - start) * resolution; }

@SGaist
sir,
Thank you so much .wish you a very happy christmas .

@LeLev
sir,
sorry for my ignorance and thank you for helping me .i usually use offfline documentation for application develepmemt.

@J-Hilk
thank you very much sir.

In that case you will need something like ffmpeg or VLC.