# Image Functions

Image Functions have an associated Property Sheet which opens when the function is added to the spreadsheet. Here the user can specify the properties of the graphic such as size, position, name, color, and whether to show the graphic at all times or just when the spreadsheet cell containing the image function is active.

Note:

- Named colors can be selected using the color picker control in the Property Sheet. The color can also be specified as Cell References to another cell that returns a color value as a 24-bit number.
- Given red, green, and blue values in the range 0-255, an RGB color value can be calculated using the formula (red * 65536) + (green * 256) + blue. Expressed in hexadecimal, this is in the 0xRRGGBB format. For example, the hexadecimal constant 0xFF8020 translates to: red=255, green=128, blue=32.