public static bool ShowFormatChooseDialog(IntPtr ownerWindowHandle, string windowTitle, AcmFormatEnumFlags enumFlags, WaveFormat enumFormat, out WaveFormat selectedFormat, out string selectedFormatDescription, out string selectedFormatTagDescription)
{
AcmFormatChoose acmFormatChoose = default(AcmFormatChoose);
acmFormatChoose.structureSize = Marshal.SizeOf(acmFormatChoose);
acmFormatChoose.styleFlags = AcmFormatChooseStyleFlags.None;
acmFormatChoose.ownerWindowHandle = ownerWindowHandle;
int num = 200;
acmFormatChoose.selectedWaveFormatPointer = Marshal.AllocHGlobal(num);
acmFormatChoose.selectedWaveFormatByteSize = num;
acmFormatChoose.title = windowTitle;
acmFormatChoose.name = null;
acmFormatChoose.formatEnumFlags = enumFlags;
acmFormatChoose.waveFormatEnumPointer = IntPtr.Zero;
if (enumFormat != null)
{
IntPtr intPtr = Marshal.AllocHGlobal(Marshal.SizeOf(enumFormat));
Marshal.StructureToPtr(enumFormat, intPtr, false);
acmFormatChoose.waveFormatEnumPointer = intPtr;
}
acmFormatChoose.instanceHandle = IntPtr.Zero;
acmFormatChoose.templateName = null;
MmResult mmResult = AcmInterop.acmFormatChoose(ref acmFormatChoose);
selectedFormat = null;
selectedFormatDescription = null;
selectedFormatTagDescription = null;
if (mmResult == MmResult.NoError)
{
selectedFormat = WaveFormat.MarshalFromPtr(acmFormatChoose.selectedWaveFormatPointer);
selectedFormatDescription = acmFormatChoose.formatDescription;
selectedFormatTagDescription = acmFormatChoose.formatTagDescription;
}
Marshal.FreeHGlobal(acmFormatChoose.waveFormatEnumPointer);
Marshal.FreeHGlobal(acmFormatChoose.selectedWaveFormatPointer);
if (mmResult != MmResult.AcmCancelled && mmResult != MmResult.NoError)
{
throw new MmException(mmResult, "acmFormatChoose");
}
return(mmResult == MmResult.NoError);
}
public static extern MmResult acmFormatChoose(ref AcmFormatChoose formatChoose);