gflLoadThumbnailFromHandle
The gflLoadThumbnailFromHandle function load a picture file as a thumbnail into memory with the use of read callback functions.
GFL_ERROR gflLoadThumbnailFromHandle( GFL_HANDLE handle, GFL_INT32 width, GFL_INT32 height, GFL_BITMAP ** bitmap, GFL_LOAD_PARAMS * params, GFL_FILE_INFORMATION * informations, );
Parameters
- handle
- User handle. The Callbacks field of the GFL_LOAD_PARAMS structure must be filled correctly.
- width
- Width of the thumbnail.
- height
- Height of the thumbnail.
- bitmap
- Address of a pointer to a GFL_BITMAP structure.
- params
-
Pointer to a GFL_LOAD_PARAMS structure.
This structure must be filled correctly. - informations
-
Pointer to a GFL_FILE_INFORMATION structure. Can be NULL if you don't want it.
You must use gflFreeFileInformation to free his content.
Return value
The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.
See also