[Value] DT_NOPREFIX [Meaning] 
Turns off processing of prefix characters. Normally, DrawText interprets the mnemonic-prefix character & as a directive to underscore the character that follows, and the mnemonic-prefix characters && as a directive to print a single &. By specifying DT_NOPREFIX, this processing is turned off. For example, Example: input string: "A&bc&&d" normal: "Abc&d" DT_NOPREFIX: "A&bc&&d" Compare with DT_HIDEPREFIX and DT_PREFIXONLY.