Switching between CCButton and CCLatched

[diegogauffin]

Hey Pieter! How are you? Hope fine!
I was thinking it would be really usefulll to get a way to change between CCButton (momentary) and CC Latched in the run. Do you think is that posible ? I mean doing it without changing the code, upload and so on.

[Wallirec]

I don't know how to get a new function without changing the code.
But here is an example of code with a button (connected to pin 2) which, when pressed briefly, transmits CC 20 Latched, and when pressed long, CC20 momentary

#include <Control_Surface.h>

USBMIDI_Interface midi;
unsigned char btn_flg = 0;

// Ignore the name “increment” button, it's simply a button
// class that can detect long and short presses.
IncrementButton btn { 2 }; // pin number of button

void setup() {
  Control_Surface.begin();
  btn.begin();
}

void loop() {
  Control_Surface.loop();
  switch (btn.update()) {
    case IncrementButton::ReleasedShort: // If button is released after short press
      Control_Surface.sendCC(20, btn_flg * 127);
      btn_flg = !btn_flg;
      break;
    case IncrementButton::IncrementLong: // If button is still pressed after some time
      Control_Surface.sendCC(20, 127);
      delay(35);
      Control_Surface.sendCC(20, 0);
      break;
  }
}

[gwilherm]

You can use pointer to MIDIOutputElement and delete/create instance of CCButton or CCButtonLatched.
If you need to use getAddress() or setAddressUnsafe() there is no common interface for this but Pieter came with a workaround that helped me a lot: #971 (comment)