Let a class implement this interface to be able to pass the class instance as a parameter to a image filter to let the class get progress callbacks.Note:
A Interface is nothing but a promise, a promise that a class implements a certain interface. So any class that implements IProgressHandler is only promising to implement the methods that the IProgressHandler interface describes.
| OnProgress||Algorithms that use the IProgressHandler interface will call this method when they want to give a notice of a progress.|
Supported Platforms:MacOS X CarbonMacOS X Cocoa 32 bitMacOS X Cocoa 64 bitWindows 32 bitWindows 64 bitLinux 32 bitLinux 64 bitLinux ARM