Represents a pointer to the upper left corner of the image buffer for a region image (an 8bpp bitmap containing region information).
This property is there to provide a means of direct access to the image buffer for plugins etc.
It is returned as an integer type, but for plugins etc., cast it to an appropriate type (unsigned char * etc.) and use it.
Unlike Layer.provinceImageBuffer, you can write a value to the pointer obtained by this property.
Inside Kirikiri, the exact same image is shared between multiple layers, etc., but if you refer to this property, the shared state will be canceled.
If no image is assigned to the layer, it will be automatically assigned when this property is referenced, and the entire area will be initialized with area number 0.
The size of the image is represented by the Layer.imageWidth and Layer.imageHeight properties.
See Layer.provinceImageBufferPitch for how to calculate the pointer.