CreateFile to open a file already opened

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#191

From: Colin B Maharaj
Date: Wed, 02 Jul 2008 12:17

27 lines
1748 bytes

Hi all I used this function to open a file for read/write share deny 
none like this....

FileHandle = FileOpen("MyFile.txt",fmOpenReadWrite|fmShareDenyNone);

then I opened the same file later on like this to read something...
no problem, (Note: I did not close the file handle above)

FileHandle2 = FileOpen("MyFile.txt", fmOpenRead |fmShareDenyNone);
...
FileClose(FileHandle2);

Finally I have this code I am using (not my code)
and is WinAPI and try to open the file similar to the
read operation above BUT IT FAILS!!

HANDLE hf = 
CreateFile("MyFile.txt",GENERIC_READ,FILE_SHARE_READ,NULL,OPEN_EXISTING,0,NULL);

// returns 0xffffffff


Any suggestions on how to get the 3rd line of code to behave like the 
2nd line. Or, is an int FileHandle like what you see in 2nd line the 
same as the HANDLE in the third.

Colin B Maharaj

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