我已经创建了一个QMainWindow类。我为主布局编写了一个QGridLayout,但是每当我添加setLayout(grid);时,就会出现这个错误:
QWidget::setLayout: Attempting to set QLayout "" on MainWindow "", which already has a layout
据我所知,我以前没有在我的代码中添加任何类型的布局。
我正在使用Qt Creator和Linux (ubuntu 12.10)。
我正在使用Ubuntu18.04.2LTS,在安装VirtualBox时遇到了困难:
$ sudo apt install virtualbox
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
virtualbox-dkms virtualbox-qt
Suggested packages:
vde2 virtualbox-guest-ad
我正试着在ubuntu20.4上运行wireshark,在windows(pc)上的WSL2上运行。(我也在AWS实例Ubuntu上进行了尝试,得到了相同的错误) 这是我尝试运行wireshark时收到的错误消息 qt.qpa.xcb: could not connect to display qt.qpa.plugin: Could not load the Qt
platform plugin "xcb" in "/opt/wireshark/libs/Qt/plugins/platforms" even though it was found. Thi
当我创建一个Word Cloud小部件时,在其他情况下,我会得到上面的错误。如果有办法让我在Linux中安装GLX1.3,你会不会?我没有在其他地方找到好的参考资料(googling)。
下面是使用这些组件打开流的会话的完整消息集。
qt.qpa.xcb: X server does not support XInput 2
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-calang'
NVD3D10: CPU cyclestats are disabled on client virt
在Qt creator中(在x86和ARM android中都会发生),在android studio works中为ABI 15构建时出现错误,但在级别24下可以。
Qt creator 4.0.3
Position 40:36-165 : String types not allowed (at 'configChanges' with value 'orientation|uiMode|screenLayout|screenSize|smallestScreenSize|layoutDirection|locale|fontScale|keyboard|keybo
当我使用上一次LTS时,打印机/扫描仪工作正常(几乎),但现在升级后,它告诉我它无法连接到设备。
我试图按HPPrinterInstallation说的做,我得到了以下信息:
$ gksudo hp-setup
HP Linux Imaging and Printing System (ver. 3.16.3)
Printer/Fax Setup Utility ver. 9.0
Copyright (c) 2001-15 HP Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is