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Editorial Team
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Asked: 2026-05-21T07:46:51+00:00

h=CreateFile(c:\\test.txt,GENERIC_READ,FILE_SHARE_READ,NULL,OPEN_ALWAYS,FILE_ATTRIBUTE_READONLY|FILE_FLAG_OVERLAPPED,NULL); OVERLAPPED ol2; memset(&ol2,0,sizeof(OVERLAPPED)); ol2.hEvent=CreateEvent(NULL,false,false,NULL); if(!ReadFile(h,iobuffer+pointsize,value,NULL,&ol2)) printf(Last Error %u,GetLastError()); if(WaitForSingleObject(&ol2.hEvent,INFINITE)!=0){ printf(Last Error %u \n,GetLastError());

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h=CreateFile("c:\\test.txt",GENERIC_READ,FILE_SHARE_READ,NULL,OPEN_ALWAYS,FILE_ATTRIBUTE_READONLY|FILE_FLAG_OVERLAPPED,NULL);

    OVERLAPPED ol2;
    memset(&ol2,0,sizeof(OVERLAPPED));
    ol2.hEvent=CreateEvent(NULL,false,false,NULL);
    if(!ReadFile(h,iobuffer+pointsize,value,NULL,&ol2))
    printf("Last Error %u",GetLastError());
    if(WaitForSingleObject(&ol2.hEvent,INFINITE)!=0){
        printf("Last Error %u \n",GetLastError());

    }

WaitForsingleobject returns invalid handle, yet I do not see why…

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1 Answer

  1. Editorial Team

    I think it should be written:

    if(WaitForSingleObject(ol2.hEvent,INFINITE)!=0){
            printf("Last Error %u \n",GetLastError());

    Note the removed & before ol2.hEvent

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