为什么我的代码中的mciSendString()获取状态位置失败? [英] why mciSendString() to get status position fails in my code?

问题描述

有什么方法可以查询mci设备以查询当前的播放位置，以便我们可以从那里恢复播放，以便以后播放?

Is there any way to query mci device to query current playing position so that we can resume from there to play later on ?

cmd.Format(L状态％d waveaudio位置"，m_iDeviceIDPlayer);

cmd.Format(L"status %d waveaudio position",m_iDeviceIDPlayer);

mcirez = mciSendString(cmd，buff.GetBuffer()，1024，NULL);

mcirez = mciSendString(cmd,buff.GetBuffer(),1024, NULL);

它给出此错误:指定的设备未打开或未被MCI识别"

it gives this error : "The specified device is not open or is not recognized by MCI "

命令有问题吗?

推荐答案

MCI_STATUS_PARMS status;
status.dwItem = MCI_STATUS_POSITION;
status.dwCallback = 0;

dwReturn = mciSendCommand(m_iDeviceIDPlayer,MCI_STATUS,MCI_STATUS_ITEM|MCI_WAIT,(DWORD_PTR)&status);     

位置-> status.dwReturn是必需的位置.

Position -> status.dwReturn is the required position.

这篇关于为什么我的代码中的mciSendString()获取状态位置失败?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！