Make custom keypad
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how to make application for device which will map all the key events on keypad to display the correct alphabet/letter in Qtextbox . Map the events like pressing the "a" key once results in writing 'a' in textbox, twice results in 'b', thrice in 'c' and 4 times in '1'. Map that for all the keys such that everything printed on the keypad could be written in the textbox.