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<DIV><FONT face=Verdana color=#0000ff size=2>Dear <FONT color=#000000>Frank
Warmerdam</FONT></FONT></DIV>
<DIV><FONT face=Verdana size=2></FONT> </DIV>
<DIV> Thank you for your
advise.I though the backslash is one possible reason.</DIV>
<DIV> When I put the
above code in pure console ,it works well. But when I put them in a qt project
,it can't get the dataset . I put these code in the begining of qt
project after main() .It should run first .I think if I
include file #include "gdal_priv.h" and link gdal lib file ,it should work
.</DIV>
<DIV><FONT face=Verdana size=2></FONT> </DIV>
<DIV align=left>
<DIV align=left><FONT face=Verdana size=2>
<HR style="WIDTH: 122px; HEIGHT: 2px" SIZE=2>
</FONT></DIV>
<DIV><FONT color=#c0c0c0><FONT face=Verdana size=2>gislif</FONT></DIV>
<DIV><FONT face=Verdana size=2>2005-12-15</FONT></FONT></DIV></DIV>
<DIV><FONT face=Verdana size=2>
<HR>
</FONT></DIV>
<DIV><FONT face=Verdana><FONT size=2><STRONG>发件人：</STRONG> Frank
Warmerdam</FONT></FONT></DIV>
<DIV><FONT face=Verdana><FONT size=2><STRONG>发送时间：</STRONG>
2005-12-15 22:50:09</FONT></FONT></DIV>
<DIV><FONT face=Verdana><FONT size=2><STRONG>收件人：</STRONG>
gislif</FONT></FONT></DIV>
<DIV><FONT face=Verdana><FONT size=2><STRONG>抄送：</STRONG>
gdal-dev@lists.maptools.org</FONT></FONT></DIV>
<DIV><FONT face=Verdana><FONT size=2><STRONG>主题：</STRONG> Re: [Gdal-dev] same
code, different result?</FONT></FONT></DIV>
<DIV><FONT face=Verdana size=2></FONT> </DIV>
<DIV><FONT face=Verdana size=2>
<DIV>On 12/15/05, gislif <gislf@126.com >
wrote:</DIV>
<DIV>></DIV>
<DIV>> Hello,</DIV>
<DIV>></DIV>
<DIV>>
Why the same code has
diferent result? I have the following</DIV>
<DIV>> code in two deferent seperate
program to generate dataset, one
program</DIV>
<DIV>> (which has only these codes
)is ok ,the other(which has other
program</DIV>
<DIV>> writen by qt )
failed. why? seting
mistake?</DIV>
<DIV>></DIV>
<DIV>></DIV>
<DIV>> int main( int argc, char **argv
)</DIV>
<DIV>> {</DIV>
<DIV>> //</DIV>
<DIV>> GDALDataset *poDataset;</DIV>
<DIV>> GDALRasterBand *poBand;</DIV>
<DIV>></DIV>
<DIV>> GDALAllRegister();</DIV>
<DIV>></DIV>
<DIV>> poDataset = (GDALDataset *)
GDALOpen( "c:\output.jpg", GA_ReadOnly );</DIV>
<DIV> </DIV>
<DIV>"gislif",</DIV>
<DIV> </DIV>
<DIV>Does the above really work? My
understanding is that the backslash</DIV>
<DIV>would always get interpreted as an
escape character on the "o"</DIV>
<DIV>so you would end up trying to
open the file "c:output.jpg" which
would</DIV>
<DIV>depend on your current directory.
In C/C++ I always double backslashes</DIV>
<DIV>in paths.</DIV>
<DIV> </DIV>
<DIV>eg.</DIV>
<DIV>GDALOpen( "C:\\output.jpg", GA_ReadOnly );</DIV>
<DIV> </DIV>
<DIV>I am not aware of any reason GDAL
should work differently in a Qt</DIV>
<DIV>app than not in a Qt app.</DIV>
<DIV> </DIV>
<DIV>Best regards,</DIV>
<DIV>--</DIV>
<DIV>---------------------------------------+--------------------------------------</DIV>
<DIV>I set the clouds in motion - turn
up | Frank Warmerdam,
warmerdam@pobox.com</DIV>
<DIV>light and sound - activate the windows
| <A
href="http://pobox.com/~warmerdam">http://pobox.com/~warmerdam</A></DIV>
<DIV>and watch the world go round -
Rush | Geospatial Programmer
for Rent</DIV>
<DIV> </DIV>
<DIV>.</DIV></FONT></DIV></BODY></HTML>