QStringqEnvironmentVariable(constchar *varName) 设置环境变量: boolqputenv(constchar *varName,const QByteArray &value) 取消设置环境变量: bool qunsetenv(const char *varName); 环境变量是否存在: boolqEnvironmentVariableIsSet(constchar *varName); boolqEnvironmentVariableIsEmpty(constchar *varName);//环...
int qRound(qreal value) const char * qVersion() T * q_check_ptr(T * pointer) QByteArray qgetenv(const char * varName) bool qputenv(const char * varName, const QByteArray & value) int qrand() void qsrand(uint seed) QString qtTrId(const char * id, int n = -1)Macros...
Qt5.7以后提供了内置的输入法,可以通过在main函数最前面加上 qputenv("QT_IM_MODULE", QByteArray("qtvirtualkeyboard")); 来启用。 在Qt5.10以后,表格控件QTableWidget或者QTableView的默认最小列宽改成了15,以前的版本是0,所以在新版的qt中,如果设置表格的列宽过小,不会应用,取的是最小的列宽。所以如果要设置...
qint64 qRound64 ( qreal value ) int qRound ( qreal value ) const char * qVersion () void qWarning ( const char * msg, ... ) T * q_check_ptr ( T * pointer ) QByteArray qgetenv ( const char * varName ) bool qputenv ( const char * varName, const QByteArray & value ) int ...
if (qEnvironmentVariableIsEmpty("QTGLESSTREAM_DISPLAY")) { qputenv("QT_QPA_EGLFS_PHYSICAL_WIDTH", QByteArray("213")); qputenv("QT_QPA_EGLFS_PHYSICAL_HEIGHT", QByteArray("120")); #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0) QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling)...
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// use the environment variable to use the "basic" rendering loop // for the Qt Quick Scene Graph // this C++ call should be placed in your startup code (probably main.cpp) as early // as possible qputenv("QSG_RENDER_LOOP", "basic"); For more information, see here https://links...
Enable as much debugging as possible, by setting theQT_LOGGING_RULESenvironment variable toqt.service.*.debug=true. This will enable debug logging for the service internals, which might help. To access the system logs, refer to your service managers documentation. ...
Qt5.7以后提供了内置的输入法,可以通过在main函数最前面加上 qputenv("QT_IM_MODULE", QByteArray("qtvirtualkeyboard")); 来启用。 在Qt5.10以后,表格控件QTableWidget或者QTableView的默认最小列宽改成了15,以前的版本是0,所以在新版的qt中,如果设置表格的列宽过小,不会应用,取的是最小的列宽。所以如果要设置...
Qt5.7以后提供了内置的输入法,可以通过在main函数最前面加上 qputenv("QT_IM_MODULE", QByteArray("qtvirtualkeyboard")); 来启用。 在Qt5.10以后,表格控件QTableWidget或者QTableView的默认最小列宽改成了15,以前的版本是0,所以在新版的qt中,如果设置表格的列宽过小,不会应用,取的是最小的列宽。所以如果要设置...