FormatAlpha is formatting transparent.

HexToRgb is to turn hex color to RBG color.

InArrayWithStr is the verification whether it is in the array.

IsChineseChar is to detect whether it is Chinese.

LenChineseChar is to calc Chinese and letter length.

ParseHexColor is to turn the hex color to RGB color.

PathExists is to detect whether the file exists.

RandIndex is to the random length range value.

RgbToHex is to turn RBG color to hex color.