using kit_w32_audio's waveOut functionality

#include <combaseapi.h>
#include <stdint.h>
#include <math.h>

#define KIT_AUDIO_USE_WINMM
#include <kit_w32.h>

extern int printf(const char* __format, ...);

float getSinSample(){
  static int sample=0;
  float value=sinf(PI*2*440*((float)sample/11025));
  ++sample;
  return value;
}

void callback(void* userdata, void* stream, unsigned int len){
  float* stream_flt=stream;
  for(unsigned int i=0; i<len; ++i) stream_flt[i]=getSinSample();
}

int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR args, int nCmdShow){
  kit_audioSpec spec;
  spec.callback=callback;
  spec.buffer_len=4096;
  spec.frequency=11025;
  spec.channels=1;
  spec.format=KIT_AUDIO_FMT_F32;

  int returnStatus;
  kit_audioDevice* device=kit_audioWaveOutOpen(&spec,-1,&returnStatus);
  if(!device){ printf("returnStatus=%i\n",returnStatus); return 0; }

  kit_audioWaveOutPlay(device,1);
  Sleep(1000);

  //you'd then close the device (if only waveOutReset worked...)

  return 0;
}