Image = gd::CreateFromPng("filename")
This function loads a PNG image. You should use this function if you want to create a picture that exists already initialized on disk.
The returned value is a string, which should not be altered by the ScriptBasic program, but should rather be used to reference the created image in subsequent calls. The value of the string can be passed to functions and subroutines, but should not be altered in any way.