private int GetDevcap(int item)
{
int err = 0;
StringBuilder buf = new StringBuilder(1000);
if (deviceID > 0)
{
MCI_GETDEVCAPS_PARMS mgp = new MCI_GETDEVCAPS_PARMS();
mgp.dwItem = item;
err = mciSendCommandA(deviceID, MCI_GETDEVCAPS, MCI_WAIT | MCI_GETDEVCAPS_ITEM, ref mgp);
if (err != 0)
{
mciGetErrorStringA(err, buf, 1000);
//throw new ApplicationException("获取已打开的文件的功能出错，" + buf.ToString());
}
return mgp.dwReturn;
}
return -1;
}
private static extern int mciSendCommandA(
Int32 wDeviceID,
UInt32 uMessage,
Int32 dwParam,
ref MCI_GETDEVCAPS_PARMS Any);
