qt是不是有兼容问题，旧版本编译无错，新版本有错 [复制链接]

d:\Qt\2009.05\qt\include/QtGui/../../src/gui/kernel/qsizepolicy.h:227: error: expected primary-expression before 'unsigned'

报这个错误！什么原因？

错误代码区域
inline void QSizePolicy::transpose() {
    Policy hData = horizontalPolicy();
    Policy vData = verticalPolicy();
    uchar hStretch = uchar(horizontalStretch());
    uchar vStretch = uchar(verticalStretch());
    setHorizontalPolicy(vData);
    setVerticalPolicy(hData);
    setHorizontalStretch(vStretch);
    setVerticalStretch(hStretch);
}


是qt库里的文件！
什么错，求解！

描述:报错

图片:6K}B0]7V{@6`{%%CSQ~$@3E.jpg

You may compile different versions together. Check path and lib setting or
remove the old one and reinstall the new Qt.