本文整理汇总了C++中DeviceContext::SetGain方法的典型用法代码示例。如果您正苦于以下问题：C++ DeviceContext::SetGain方法的具体用法？C++ DeviceContext::SetGain怎么用？C++ DeviceContext::SetGain使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DeviceContext的用法示例。
在下文中一共展示了DeviceContext::SetGain方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: HandleWaveMessage
//.........这里部分代码省略.........
case WODM_WRITE:
case WIDM_ADDBUFFER:
{
DEBUGMSG(ZONE_WIDM, (TEXT("WODM_WRITE/WIDM_ADDBUFFER, Buffer=0x%x\r\n"),dwParam1));
dwRet = pStreamContext->QueueBuffer((LPWAVEHDR)dwParam1);
break;
}
case WODM_GETVOLUME:
{
PULONG pdwGain = (PULONG)dwParam1;
UINT NumDevs = g_pHWContext->GetNumOutputDevices();
if (pStreamContext)
{
*pdwGain = pStreamContext->GetGain();
}
else
{
DeviceContext *pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
*pdwGain = pDeviceContext->GetGain();
}
dwRet = MMSYSERR_NOERROR;
break;
}
case WODM_SETVOLUME:
{
UINT NumDevs = g_pHWContext->GetNumOutputDevices();
LONG dwGain = dwParam1;
if (pStreamContext)
{
dwRet = pStreamContext->SetGain(dwGain);
}
else
{
DeviceContext *pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
dwRet = pDeviceContext->SetGain(dwGain);
}
break;
}
case WODM_BREAKLOOP:
{
dwRet = pStreamContext->BreakLoop();
break;
}
case WODM_SETPLAYBACKRATE:
{
WaveStreamContext *pWaveStream = (WaveStreamContext *)dwUser;
dwRet = pWaveStream->SetRate(dwParam1);
break;
}
case WODM_GETPLAYBACKRATE:
{
WaveStreamContext *pWaveStream = (WaveStreamContext *)dwUser;
dwRet = pWaveStream->GetRate((DWORD *)dwParam1);
break;
}
case MM_WOM_SETSECONDARYGAINCLASS:
{
if (pStreamContext)