Smart Device Functions:
Type a page name and press Enter. You'll jump to the page if it exists, or you can create it if it doesn't.
To create a page in a module other than winmm, prefix the name with the module name and a period.
[DllImport("winmm.dll", SetLastError = true, CharSet = CharSet.Auto)]
'Support for WAVEFORMATEX
Declare Function waveOutOpen Lib "winmm.dll" Alias "waveOutOpen" (ByRef phwi As IntPtr, ByVal uDeviceID As IntPtr, ByRef pwfx As WAVEFORMATEX, ByVal dwCallback As IntPtr, ByVal dwCallbackInstance As IntPtr, ByVal fdwOpen As WAVE_FLAGS) As MMSYSERR
'Support for WAVEFORMATEXTENSIBLE
Declare Function waveOutOpen Lib "winmm.dll" Alias "waveOutOpen" (ByRef phwi As IntPtr, ByVal uDeviceID As IntPtr, ByRef pwfx As WAVEFORMATEXTENSIBLE, ByVal dwCallback As IntPtr, ByVal dwCallbackInstance As IntPtr, ByVal fdwOpen As WAVE_FLAGS) As MMSYSERR
Alternative Managed API:
See http://social.msdn.microsoft.com/Forums/en-US/windowspro-audiodevelopment/thread/14926e01-635e-4360-998b-ec6124d888a7 - correct C# signature at the bottom (including uDeviceId). This is based on http://msdn.microsoft.com/en-us/library/windows/desktop/dd743866%28v=vs.85%29.aspx which shows a UINT_PTR for that parameter. Note that the _PTR parameters are the only ones that are different sizes in 32 vs. 64 bit mode. In .Net you use IntPtr for that purpose.
Tips & Tricks:
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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 11:00:13 AM - Damon Carr-126.96.36.199
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