[DllImport("winmm.dll")] //引用winmm.dll
public static extern long waveOutSetVolume(uint deviceID, uint Volume); //参数为uint
private void trackBar1_Scroll(object sender, EventArgs e)
{
waveOutSetVolume(0, Convert.ToUInt16(trackBar1.Value)); }
public static extern long waveOutSetVolume(uint deviceID, uint Volume); //参数为uint
private void trackBar1_Scroll(object sender, EventArgs e)
{
waveOutSetVolume(0, Convert.ToUInt16(trackBar1.Value)); }
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