Ramiro,<br><br>You can use the OGRLayer::TestCapability() method to check write capability of a layer. However, there are going to be errors if another process accesses the files in the mean while.<br><br>When ogr2ogr is executed with -append, -overwrite or --update options, it should error out with the message "Unable to open existing output datasource" if a file cannot be opened to write. Can you raise a new ticket [1] describing this problem?<br>
<br>[1]: <a href="http://trac.osgeo.org/gdal/newticket">http://trac.osgeo.org/gdal/newticket</a><br><br><div class="gmail_quote">On Wed, May 25, 2011 at 12:20 AM, Ramiro Gonzalez <span dir="ltr"><<a href="mailto:ramirogonzalez@suremptec.com.ar">ramirogonzalez@suremptec.com.ar</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">hello<br>
<br>I want to overwrite a shapefile using ogr(c++). If the dbf file in the destination shapefile is already open by anather program(exel), the operation fails in the middle and only the shp and shx files are updated.<br>
How could I check, using OGR, if the dbf(or any other file in the shapefile) is blocked before I overwrite it? <br><br>I tested this with "ogr2ogr -overwrite destination source.shp" and the same thing happens <br>
<br>
Thanks,<br><font color="#888888">
Ramiro
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