Editing TIFF Tag

Asked Nov 24 '15 at 12:30

Active Nov 24 '15 at 13:31

Viewed 742 times

For editing tags in a tiff file, I wrote the below code but the source file did not change.

TIFF *tif= TIFFOpen("new.tif", "r+");
QString temp = "new artist";
TIFFSetField (tif, TIFFTAG_ARTIST, temp.c_str());
void* val;
TIFFGetField (tif, TIFFTAG_ARTIST, &val);
cerr << (char*)val;
TIFFFlushData(tif);
TIFFClose(tif);

The output of this code is

new artist

But when I reopen the file and get the artist tag value, it did not change

TIFF *tif= TIFFOpen("new.tif", "r+");
void* val;
TIFFGetField (tif, TIFFTAG_ARTIST, &val);
cerr << (char*)val;

output is:

 127.90.112117

edited Nov 24 '15 at 13:31

Tom

7,269
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asked Nov 24 '15 at 12:30

user2670555

What's the return value of `TIFFFlushData()`? Did the file date change? – sb9 Nov 24 '15 at 14:27
@sb9 , no file date is not changed. – user2670555 Nov 25 '15 at 06:19
What do the `TIFF...`functions return, especially `TIFFFlushData()`? – sb9 Nov 25 '15 at 08:53

Editing TIFF Tag

0 Answers0