windows - 暂停 Windows 关机

Question

如何为我的应用暂停足够长的关机时间？我找到了一个 example ，但它适用于 Delphi - 我无法将其翻译成 C++。

Answer 1

这是 Delphi 代码的 C++Builder VCL 翻译:

class TForm1 : public TForm
{
  ..
protected:
    void __fastcall WMQueryEndSession(TWMQueryEndSession &Message);
    ..
public:
    ..
    BEGIN_MESSAGE_MAP
        VCL_MESSAGE_HANDLER(WM_QUERYENDSESSION, TWMQueryEndSession, WMQueryEndSession)
    END_MESSAGE_MAP(TForm)
};

...

void __fastcall TForm1::WMQueryEndSession(TWMQueryEndSession &Message)
{
    Message.Result = TRUE;
    if ((Message.Unused & ENDSESSION_CRITICAL) == 0)
    {
        ShutdownBlockReasonCreate(Handle, L"please wait while muting...");

        Sleep(45000); // do your work here

        ShutdownBlockReasonDestroy(Handle);
    }
}