Creates a new pixbuf by loading an image from an resource.
The file format is detected automatically.
The image will be scaled to fit in the requested size, optionally preserving the image's aspect ratio. When preserving the aspect ratio, a width of -1 will cause the image to be scaled to the exact given height, and a height of -1 will cause the image to be scaled to the exact given width. When not preserving aspect ratio, a width or height of -1 means to not scale the image at all in that dimension.
The stream is not closed.
the path of the resource file
The width the image should have or -1 to not constrain the width
The height the image should have or -1 to not constrain the height
true to preserve the image's aspect ratio
Return: A newly-created pixbuf, or null if any of several error conditions occurred: the file could not be opened, the image format is not supported, there was not enough memory to allocate the image buffer, the stream contained invalid data, or the operation was cancelled.
GException on failure.