(20200416: ) How do we call sounds drivers? --- Call Driver: --- (source code ) --- Write WaveData : https://docs.microsoft.com/en-us/windows/win32/multimedia/example-of-writing-waveform-data --- // Global variables. HANDLE hData = NULL; // handle of waveform data memory HPSTR lpData = NULL; // pointer to waveform data memory void WriteWaveData(void) { HWAVEOUT hWaveOut; HGLOBAL hWaveHdr; LPWAVEHDR lpWaveHdr; HMMIO hmmio; UINT wResult; HANDLE hFormat; WAVEFORMAT *pFormat; DWORD dwDataSize; // Open a waveform device for output using window callback. if (waveOutOpen((LPHWAVEOUT)&hWaveOut, WAVE_MAPPER, ...