PNG 256 colors and transparency
Posted: Fri Jun 03, 2005 3:40 pm
Hi,
I have a 256 colors PNG file with transparency.
If I just load the file and then save it also in PNG the transparency is lost. How can I keep it ?
Thanks in advance
Ithier
Here is my code:
I have a 256 colors PNG file with transparency.
If I just load the file and then save it also in PNG the transparency is lost. How can I keep it ?
Thanks in advance
Ithier
Here is my code:
Code: Select all
#include "libgfl.h"
int main(int argc, char *argv[])
{
gflLibraryInit();
GFL_LOAD_PARAMS load_option;
gflGetDefaultLoadParams( &load_option );
GFL_FILE_INFORMATION GflFI;
GFL_BITMAP* GflBitmap;
gflLoadBitmap(argv[1], &GflBitmap, &load_option, &GflFI);
GFL_SAVE_PARAMS save_option;
gflGetDefaultSaveParams(&save_option);
save_option.FormatIndex = gflGetFormatIndexByName("png");
gflSaveBitmap("o.png", GflBitmap, &save_option);
return 0;
}