setup icon in openFrameworks app (only windows)

ofxIcon.h

#pragma once
#include "ofMain.h"

inline void setupIcon(string iconPath) {
  // set window icon
  HICON hWindowIcon    = NULL;
  HICON hWindowIconBig = NULL;
  HWND  hwnd           = ofGetWin32Window();
  if (hWindowIcon != NULL) DestroyIcon(hWindowIcon);
  if (hWindowIconBig != NULL) DestroyIcon(hWindowIconBig);
  hWindowIcon    = (HICON)LoadImageA(GetModuleHandle(NULL), iconPath.c_str(), IMAGE_ICON, 16, 16, LR_LOADFROMFILE);
  hWindowIconBig = (HICON)LoadImageA(GetModuleHandle(NULL), iconPath.c_str(), IMAGE_ICON, 32, 32, LR_LOADFROMFILE);
  SendMessage(hwnd, WM_SETICON, ICON_SMALL, (LPARAM)hWindowIcon);
  SendMessage(hwnd, WM_SETICON, ICON_BIG, (LPARAM)hWindowIconBig);
};