RichTextBox text blinking

does someone know, how to make various parts of RichTextBox text to blink in .NET on Winforms? Or mayb开发者_JS百科e this is already done?(Google gave no help)

Thank you

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First you need a timer. after selecting a text and click the blink button save the region of the text (startposition:endposition) to an array. With the timer change every second(for example) the color of the text in regions saved in the array. if the text is changed check if the change occured in a region and inrecrease or shrink the region. if the text is change outside a region check if the blinking text is moved and move the region also backward/foreward.