Set the value Specify the x coordinate (in layer image coordinates).
y
Set the value Specify the y coordinate (in layer image coordinates).
value
Specify the value to be set (0 to 255).
戻り値
なし (void)
説明
Set a value (0 to 255) at any position in the layer area image.
Specifying an invalid (out of range) location as an image coordinate will raise an exception.