The file is at eof after the write. Do a FileSeek(begin) before read.
BTW, casting to void* does nothing.
venkatesh wrote:
>
> Hi
> I want to use File Streaming API in my application. I have
> tried with FileWrite( ) and FileRead( ) calls. I am able to write some
> bytes into a file. But reading that file always returns zero objects.
> I didn't got any errors also. Can anybody suggest some way to do this.
>
> The code follows:
>
> int file(void)
> {
> FileHand tmpFile = NULL;
> Int32 written, read;
> char write_buffer[4] = "abcd";
> char read_buffer[4] = " ";
> tmpFile = FileOpen (0, "ptt1.txt", 0, 0, fileModeReadWrite, NULL);
> if (tmpFile == NULL)
> {
> printf("Error opening file");
> }
>
> written = FileWrite (tmpFile, (void *)write_buffer, 1, 4, &err);
> printf("Bytes Written = %d.\n",(int)written);
>
> read = FileRead (tmpFile, (void *)read_buffer, 1, 4, &err);
> printf("Bytes Read = %d.\n",(int)read);
> err = FileClose(tiffFile);
> return 0;
> }
> debugging returns err = 0
>
> Thanks in advance
>
> venkatesh
>
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