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
See also
gflGetDefaultLoadParams,
gflGetDefaultThumbnailParams,
gflGetDefaultSaveParams,
gflLoadBitmap,
gflLoadBitmapFromMemory,
gflLoadBitmapFromHandle,
gflLoadThumbnail,
gflLoadThumbnailFromMemory,
gflSaveBitmap,
gflSaveBitmapIntoMemory,
gflSaveBitmapIntoHandle