/// <summary>
/// Attempts to add a new ACM driver from a file
/// </summary>
/// <param name="driverFile">Full path of the .acm or dll file containing the driver</param>
/// <returns>Handle to the driver</returns>
public static AcmDriver AddLocalDriver(string driverFile)
{
IntPtr handle = NativeMethods.LoadLibrary(driverFile);
if (handle == IntPtr.Zero)
{
throw new ArgumentException("Failed to load driver file");
}
var driverProc = NativeMethods.GetProcAddress(handle, "DriverProc");
if (driverProc == IntPtr.Zero)
{
NativeMethods.FreeLibrary(handle);
throw new ArgumentException("Failed to discover DriverProc");
}
IntPtr driverHandle;
var result = AcmInterop.acmDriverAdd(out driverHandle,
handle, driverProc, 0, AcmDriverAddFlags.Function);
if (result != MmResult.NoError)
{
NativeMethods.FreeLibrary(handle);
throw new MmException(result, "acmDriverAdd");
}
var driver = new AcmDriver(driverHandle);
// long name seems to be missing when we use acmDriverAdd
if (string.IsNullOrEmpty(driver.details.longName))
{
driver.details.longName = "Local driver: " + Path.GetFileName(driverFile);
driver.localDllHandle = handle;
}
return(driver);
}
public static AcmDriver AddLocalDriver(string driverFile)
{
IntPtr intPtr = NativeMethods.LoadLibrary(driverFile);
if (intPtr == IntPtr.Zero)
{
throw new ArgumentException("Failed to load driver file");
}
IntPtr procAddress = NativeMethods.GetProcAddress(intPtr, "DriverProc");
if (procAddress == IntPtr.Zero)
{
NativeMethods.FreeLibrary(intPtr);
throw new ArgumentException("Failed to discover DriverProc");
}
IntPtr hAcmDriver;
MmResult mmResult = AcmInterop.acmDriverAdd(out hAcmDriver, intPtr, procAddress, 0, AcmDriverAddFlags.Function);
if (mmResult != MmResult.NoError)
{
NativeMethods.FreeLibrary(intPtr);
throw new MmException(mmResult, "acmDriverAdd");
}
AcmDriver acmDriver = new AcmDriver(hAcmDriver);
if (string.IsNullOrEmpty(acmDriver.details.longName))
{
acmDriver.details.longName = "Local driver: " + Path.GetFileName(driverFile);
acmDriver.localDllHandle = intPtr;
}
return(acmDriver);
}
