How to convert QString to LPCSTR??

[Gokulnathvc]

if (Status == DEVICESTATUS_DOWNLOAD_PROGRESS) {
        QString out;
        out.sprintf(("Downloading....  %d Sectors"), (unsigned int) Param);
        pThis->HlpSetStatus((LPCSTR)out.utf16());

if (Status == DEVICESTATUS_DOWNLOAD_PROGRESS) {
        QString out;
        out.sprintf(("Downloading....  %d Sectors"), (unsigned int) Param);
        pThis->HlpSetStatus((LPCSTR)out.utf16());

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Am using this code but the status just displays only "D".. Please help me to resolve this issue.