I can't generate wbmp image on the fly :(
I have apache 1.3.12, PHP4.0.2 and gd 1.8.3-5, no compiler error/problem but when i try to use ImageWBMP functions, Apache generate message:
Document Contains No Data

There is my example code:
<?php
   $tt="C";
   Header("Content-type: image/vnd.wap.wbmp");
   $img = ImageCreate(40,40);
   $bg = ImageColorAllocate ($img, 255,255,255);
   $fg = ImageColorAllocate ($img, 0,0,0);
   ImageFill($img, 0, 0, $fg);
   ImageString($img, 3, 15, 2, $tt, $bg);
   ImageWBMP($img);
   ImageDestroy($img);
?>
--------------------------------------
And WML code

<?php
   include("/www/wap/x/config.jr");
?>
<card>
   <p align="center">
      <img src="/wap/mail/img/dd.php" alt="Login"/>
   </p>
</card>
</wml>
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