Get the width and height in pixels for the specified image.
The values of @width and @height are returned as -1 if the
values cannot be obtained (for instance, if the object is not onscreen).
If the size can not be obtained (e.g. missing support), x and y are set
to -1.
Get the width and height in pixels for the specified image. The values of @width and @height are returned as -1 if the values cannot be obtained (for instance, if the object is not onscreen).
If the size can not be obtained (e.g. missing support), x and y are set to -1.