isLeter static method

bool? isLeter(
  1. int vk
)

Implementation

static bool? isLeter(int vk) {
  if (MethodChannelWinhooker.virtualKeyCode2StringMap != null) {
    var A = MethodChannelWinhooker.virtualKeyString2CodeMap!['A'];
    var Z = MethodChannelWinhooker.virtualKeyString2CodeMap!['Z'];
    if ((vk >= A!) && (vk <= Z!)) {
      return true;
    } else {
      return false;
    }
  }
  return null;
}