there is a sprite with two images,one 3 frames , another 4 frames.How to put them together ,to create one sprite?

You could either:
1. Open up your favourite image editor and do it there.
2. If you are creating an animated sprite I believe you can use the void agk::AddSpriteAnimationFrame( UINT iSpriteIndex, UINT iImageIndex ) command.

Btw, congrats on your valued member badge Halley!

I will try AddSpriteAnimationFrame command.
@Hodgey - Thank you very much.