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waveOutGetVolume (coredll)
coredll is for smart devices, not desktop Windows. Therefore, this information only applies to code using the .NET Compact Framework. To see if information for waveOutGetVolume in other DLLs exists, click on Find References to the right.
Declare Function waveOutGetVolume Lib "coredll.dll" (ByVal uDeviceID As Integer, ByRef lpdwVolume As Integer) As Integer
Declare Function waveOutGetVolume Lib "coredll.dll" (TODO) As TODO
User-Defined Types:
None.
Notes:
0 is off, 65536 is max volume.
Pass IntPtr.Zero as the value for device if only one audio device in your pocket pc.
OFF = 0,
LOW = 858993459,
NORMAL = 1717986918,
MEDIUM = -1717986919,
HIGH = -858993460,
VERY_HIGH = -1
}
[DllImport("coredll.dll", SetLastError=true)]
internal static extern int waveOutSetVolume(IntPtr device, int volume);
[DllImport("coredll.dll", SetLastError=true)]
internal static extern int waveOutGetVolume(IntPtr device, ref int volume);
public static Volumes Volume {
get {
int v = (int)0;
waveOutGetVolume(IntPtr.Zero, ref v);
switch (v) {
case (int)Volumes.OFF: return Volumes.OFF;
case (int)Volumes.LOW: return Volumes.LOW;
case (int)Volumes.NORMAL: return Volumes.NORMAL;
case (int)Volumes.MEDIUM: return Volumes.MEDIUM;
case (int)Volumes.HIGH: return Volumes.HIGH;
case (int)Volumes.VERY_HIGH: return Volumes.VERY_HIGH;
default: return Volumes.OFF;
}
}
set { waveOutSetVolume(IntPtr.Zero, (int)value); }
}
Alternative Managed API:
Do you know one? Please contribute it!
An IntPtr is a pointer to a memory location (unmanaged) that adapts to the platform it is running on (64-bit, etc.) UNLIKE a standard int/Integer. You should always use this type for unmanaged calls that require it, even though an int will appear to work on your development machine.
1/13/2008 4:00:13 AM - Damon Carr-72.43.165.29
An IntPtr is a pointer to a memory location (unmanaged) that adapts to the platform it is running on (64-bit, etc.) UNLIKE a standard int/Integer. You should always use this type for unmanaged calls that require it, even though an int will appear to work on your development machine.
1/13/2008 4:00:13 AM - Damon Carr-72.43.165.29
An IntPtr is a pointer to a memory location (unmanaged) that adapts to the platform it is running on (64-bit, etc.) UNLIKE a standard int/Integer. You should always use this type for unmanaged calls that require it, even though an int will appear to work on your development machine.
1/13/2008 4:00:13 AM - Damon Carr-72.43.165.29
An IntPtr is a pointer to a memory location (unmanaged) that adapts to the platform it is running on (64-bit, etc.) UNLIKE a standard int/Integer. You should always use this type for unmanaged calls that require it, even though an int will appear to work on your development machine.
1/13/2008 4:00:13 AM - Damon Carr-72.43.165.29
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