无法使这些 C 风格的转换现代化

Question

代码：

int CChristianLifeMinistryEditorDlg::CompareDate(const void* pArg1, const void* pArg2)
{
    const STUDENT_ASSIGN_HIST_S* psAssign1 = *((STUDENT_ASSIGN_HIST_S * *)pArg1);
    const STUDENT_ASSIGN_HIST_S* psAssign2 = *((STUDENT_ASSIGN_HIST_S * *)pArg2);
    int                 iGreater = 0; // assume they are the same

    if (psAssign1->datMeeting < psAssign2->datMeeting)
        iGreater = -1;
    else if (psAssign1->datMeeting > psAssign2->datMeeting)
        iGreater = 1;

    return iGreater;
}

我正在努力研究如何使 C 风格的转换现代化：

const STUDENT_ASSIGN_HIST_S* psAssign1 = *((STUDENT_ASSIGN_HIST_S * *)pArg1);
const STUDENT_ASSIGN_HIST_S* psAssign2 = *((STUDENT_ASSIGN_HIST_S * *)pArg2);

我试过了：

const STUDENT_ASSIGN_HIST_S* psAssign1 = *(static_cast<STUDENT_ASSIGN_HIST_S * *>(pArg1));
const STUDENT_ASSIGN_HIST_S* psAssign1 = *(reinterpret_cast<STUDENT_ASSIGN_HIST_S * *>(pArg1));

这两个实例 VS 都告诉我这是一个无效的转换。

Answer 1

你可以试试这个：

typedef const STUDENT_ASSIGN_HIST_S* PCSAHS;

//...

PCSAHS psAssign1 = *(static_cast<const PCSAHS*>(pArg1));

pArg1 有 const 限定符，因此在转换时需要保留它。

无法使这些 C 风格的转换现代化

Unable to modernize these C-style casts

casting

visual-c++