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I have a class with a variable that supposed to hold a color that will later be used as a color in tcl, and since its value isn’t shown to the user as a string, it can hold either words, or an Hex RGB number (for example #FF00FF or “magenta”).
When I create an object I want to check that the color is valid. Is there a way to check that a certain value is an valid color for tcl and tk?
You can run the command
winfo rgb .which will try to convert the string to an RGB value. If the string is invalid, the command will throw an error which you can catch.