Re: Saving image in gif format

Hi,

I am using LeadTool licensed version 12. I unlocked the support for gif format using 

 m_Lead.UnlockSupport(L_SUPPORT_GIFLZW, (LPCTSTR)sL_KEY_GIFLZW);

I could read any gif images.I have problem in saving my image in gif format.

I could save in many different formats. Using the API

 m_Lead.Save( m_FileName,FILE_TIF, m_iColors, iQuality, SAVE_OVERWRITE); Works fine and many other formats (FILE_BMP, FILE_EPS, FILE_JFIF, etc.,)also works

Except

 m_Lead.Save( m_FileName,FILE_GIF, m_iColors, iQuality, SAVE_OVERWRITE);

Is there any problem in saving in LZW Compression format in version 12 ?

Is there anything specific setting that i have to do for saving LZW compressed image ?

Thanks for the help

Hi,

For the above problem i did not mentioned what is happening !

Actually i am not getting any error as such. All the return codes are fine, and gif file created without proper data. when i opened the file, i could see only black color.

I am sending proper m_iColors and  iQuality information to save function.I gone thro' the Lead tool help and tried various options, no success.

Thanks

Murthy

Murthy,

I tried the load an image and save it using the MFC demo of our ActiveX 12.1 control, and it worked. I'm attaching the resulting file.
What is the version of 12 you have? I used build 12.1.0.61 of ltfil12n.DLL and lfgif12n.dll.
Also, what value do you use for Bits Per Pixel? I used 8.

Thanks,

It is working ! And now having another problem

It is Color info that i was sending wrong to save function.

m_Lead.Save( m_FileName,FILE_GIF, m_iColors, iQuality, SAVE_OVERWRITE);

It is not working if m_iColors = 4.

i.e., If an image is 4 bits per pixel or a 16-color image.

I am interested in gif format only. i am using version 12.1

Regards

Murthy

Murthy,
Even with 4-bit images, LEADTOOLS 12.1 saves correct GIF. I'm also attaching a sample file saved using our MFC OCX demo.


If your build (version info) is 12.1.0.61, try to create a small test
program that shows what you're doing (not your full application) and either post it here or send it to support@LEADTOOLS.com

Important note:
If you post or email files, please put them in a ZIP file first.