[ CCode ( has_typedef = false , instance_pos = 3.9 ) ]
public delegate void* PixbufModuleBeginLoadFunc (PixbufModuleSizeFunc size_func, PixbufModulePreparedFunc prepared_func, PixbufModuleUpdatedFunc updated_func) throws Error
Sets up the image loading state.
The image loader is responsible for storing the given function pointers and user data, and call them when needed.
The image loader should set up an internal state object, and return it from this function; the state object will then be updated from the [callback@GdkPixbuf.PixbufModuleIncrementLoadFunc] callback, and will be freed by [callback@GdkPixbuf.PixbufModuleStopLoadFunc] callback.
| size_func |
the function to be called when the size is known |
| prepared_func |
the function to be called when the data has been prepared |
| updated_func |
the function to be called when the data has been updated |
| user_data |
the data to be passed to the functions |
|
the data to be passed to [callback@GdkPixbuf.PixbufModuleIncrementLoadFunc] and [callback@GdkPixbuf.PixbufModuleStopLoadFunc], or `NULL` in case of error |