Message QWindowsNativeInterface::nativeResourceForWindow: 'handle' requested for null window or window without handle.
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Hi! I recently migrated to Qt5 on Windows and run small app with main window and several widgets (childs of QVideoWidget) and custom dialogs.
Sometimes I got this messages in console (then I exec dialog for example)
@QWindowsNativeInterface::nativeResourceForWindow: 'handle' requested for null window or window without handle.@It doesn't seem to affect my app but I'm curious what it means and is there some hidden faults?
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Here too, plenty of this message in the console since I upgraded to QT5... No idea what it means and how to get rid of it...
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I have just upgraded to Qt 5.0.1 and I am now getting those messages too while I didn't at all with Qt 5.0.0...?!
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I get the same messages, also using 5.0.1.
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Is there a solution available?
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I found my problem, the tcpserver and tcpclient has different qdatastream versions...
qdatastream::setVersion solves my problem
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Hmm, how is the QDataStream related to window handling?
I have the same problem:
Win 8 Pro 64 bit, MSVC2012, Qt 5.0.1 commercial. -
Can you guys let me know how I can reproduce it at my end? any example or QTDIR\qtbase\ example ??
Any certain steps ??Any hint or stack trace which can give any clue?
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I can't give you a Qt example programm causing this problem (havent' compiled the examples) but I can you give a small programm that shows the error. it is a autoupdater library for qt based programms, based on the poject "flevor" together with the mentioned small example programm to show the effect.
There are only two disadvantages: It depends on QuaZIP, a Qt wrapper for zLib/minizip. And it suffers the QtWebkit bug described here: http://qt-project.org/forums/viewthread/23571
If you are interested please give me a note and I will send you the files.
Torben
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I also can confirm. Tested with official builds for both mingw 4.7.2 and MSVC 2010.
One message for each control (QWidget child?). -
[quote author="TorbenD" date="1360329674"]I can't give you a Qt example programm causing this problem (havent' compiled the examples) but I can you give a small programm that shows the error. it is a autoupdater library for qt based programms, based on the poject "flevor" together with the mentioned small example programm to show the effect.
There are only two disadvantages: It depends on QuaZIP, a Qt wrapper for zLib/minizip. And it suffers the QtWebkit bug described here: http://qt-project.org/forums/viewthread/23571
If you are interested please give me a note and I will send you the files.
Torben[/quote]
Yes sure if it is not too big example and if I can easily see the behavior then yes please let me know how I can get that code.
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Same problem here with Qt 5.0.1 for mingw on Windows 7 64bit...
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Same problem. Qt 5.0.1 mingw (official build from downloads), win7 64bit.
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只要创建widget,就是一大堆QWindowsNativeInterface::nativeResourceForWindow: 'handle' requested for null window or window without handle.
自带的示例也是一样的.不知道是不是qt5.0.1的问题?
QT5.0.1 win7 32bit ming/vs2010 (official build)都是!Just create widget, that is a lot of "QWindowsNativeInterface::nativeResourceForWindow: 'handle' requested for null window or window without handle."
QT Example has the same problem in QT5.0.1!
QT5.0.1 win7 32bit mingw4.7/vs2010 (official build) -
[quote author="xisuosunboy" date="1360592779"]只要创建widget,就是一大堆QWindowsNativeInterface::nativeResourceForWindow: 'handle' requested for null window or window without handle.
QT Example has the same problem in QT5.0.1!
QT5.0.1 win7 32bit mingw4.7/vs2010 (official build)[/quote]Can you please point me which example and what steps required to see this , i just ran few widget based example and dont see this.
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It seems you should compile in "debug" mode as in "release" mode, I do no get these messages.
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[quote author="irfan.omair" date="1360629199"]
[quote author="xisuosunboy" date="1360592779"]只要创建widget,就是一大堆QWindowsNativeInterface::nativeResourceForWindow: 'handle' requested for null window or window without handle.QT Example has the same problem in QT5.0.1!
QT5.0.1 win7 32bit mingw4.7/vs2010 (official build)[/quote]Can you please point me which example and what steps required to see this , i just ran few widget based example and dont see this.
[/quote]
"Application Example",When you click to "open" or "save",then there will a lot of "QWindowsNativeInterface::nativeResourceForWindow: 'handle' requested for null window or window without handle."
Whether in "debug" or "release",this problem occurs.
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When in windows2003 .QT5.0.1 32bit mingw4.7 (official build)
“Application Example”,When you click to “open” or “save”,then there one message like this "CoCreateInstance failed (在活动的激活上下文中没有找到任何查找密钥。)"
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Alright, so it seems it is coming up when you are actually trying to show native dialog. Let me try to reproduce it here
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[quote author="irfan.omair" date="1360695750"]Alright, so it seems it is coming up when you are actually trying to show native dialog. Let me try to reproduce it here[/quote]
Did you able to reproduce this problem?Or the problem is only my case.