putenv.h

QT4的utils库源码包.解压后运行./configure配置,然后make.使用时在.pro文件中加入两行:LIBS+=-L$$(CPPLIBS)-lutils及INCLUDEPATH+=$$(C

#include <QString>

namespace qstd {
	/** A Qt 4 wrapper around stdlib.h putenv, which allows us to avoid the use of
		char[] in favor of QStrings. */
	void putenv(QString key, QString value);
};