Update GiMouseHelper for WPF canvas.
Update GiMouseHelper for WPF canvas.

aw691190716/vgcore,xuebao555/vgcore,aw691190716/vgcore,xuebao555/vgcore,aw691190716/vgcore,xuebao555/vgcore,aw691190716/vgcore,xuebao555/vgcore