Definition 

In GdPicture.NET an editable multiframe gif image* is a GdPicture Image with some particularities & features: 

- This kind of image contains one or multiple frames. 

- Each of frame can be edited (resize, filters, effects...). 

- Each of frame can be deleted. 

- Frames can be swapped. 

- New frames can be added. 

See Multiframe GIF Manipulation section of this documentation to see specific features of this format. 

* Also known as Animated GIF. 

How to create an editable multiframe gif image ? 

There is two ways: 

1- Direct method, calling only one function 

Using GifCreateMultiFrameFromFile or GifCreateMultiFrameFromGdPictureImage function. Each of these functions always returns a GdPicture Image marked as editable multiframe gif image. 

2 - Indirect method, using the standard function 

Call the GifOpenMultiFrameForWrite method using True as parameter. 

Create a GdPicture Image using one of the generic loading function (IE: CreateGdPictureImageFromFile). 

Warning: With this method, an editable multiframe gif image is created only is the loaded image is an animated gif image. 

How to check if a GdPicture Image is marked as editable multiframe gif image ? 

See the GifIsEditableMultiFrame function.