Beispiel #1
0
        /// <summary>
        /// Show Format Choose Dialog
        /// </summary>
        /// <param name="ownerWindowHandle">Owner window handle, can be null</param>
        /// <param name="windowTitle">Window title</param>
        /// <param name="enumFlags">Enumeration flags. None to get everything</param>
        /// <param name="enumFormat">Enumeration format. Only needed with certain enumeration flags</param>
        /// <param name="selectedFormat">The selected format</param>
        /// <param name="selectedFormatDescription">Textual description of the selected format</param>
        /// <param name="selectedFormatTagDescription">Textual description of the selected format tag</param>
        /// <returns>True if a format was selected</returns>
        public static bool ShowFormatChooseDialog(
            IntPtr ownerWindowHandle,
            string windowTitle,
            AcmFormatEnumFlags enumFlags,
            WaveFormat enumFormat,
            out WaveFormat selectedFormat,
            out string selectedFormatDescription,
            out string selectedFormatTagDescription)
        {
            AcmFormatChoose formatChoose = new AcmFormatChoose();

            formatChoose.structureSize     = Marshal.SizeOf(formatChoose);
            formatChoose.styleFlags        = AcmFormatChooseStyleFlags.None;
            formatChoose.ownerWindowHandle = ownerWindowHandle;
            int maxFormatSize = 200; // guess

            formatChoose.selectedWaveFormatPointer  = Marshal.AllocHGlobal(maxFormatSize);
            formatChoose.selectedWaveFormatByteSize = maxFormatSize;
            formatChoose.title                 = windowTitle;
            formatChoose.name                  = null;
            formatChoose.formatEnumFlags       = enumFlags;//AcmFormatEnumFlags.None;
            formatChoose.waveFormatEnumPointer = IntPtr.Zero;
            if (enumFormat != null)
            {
                IntPtr enumPointer = Marshal.AllocHGlobal(Marshal.SizeOf(enumFormat));
                Marshal.StructureToPtr(enumFormat, enumPointer, false);
                formatChoose.waveFormatEnumPointer = enumPointer;
            }
            formatChoose.instanceHandle = IntPtr.Zero;
            formatChoose.templateName   = null;

            MmResult result = AcmInterop.acmFormatChoose(ref formatChoose);

            selectedFormat               = null;
            selectedFormatDescription    = null;
            selectedFormatTagDescription = null;
            if (result == MmResult.NoError)
            {
                selectedFormat               = WaveFormat.MarshalFromPtr(formatChoose.selectedWaveFormatPointer);
                selectedFormatDescription    = formatChoose.formatDescription;
                selectedFormatTagDescription = formatChoose.formatTagDescription;
            }

            Marshal.FreeHGlobal(formatChoose.waveFormatEnumPointer);
            Marshal.FreeHGlobal(formatChoose.selectedWaveFormatPointer);
            if (result != MmResult.AcmCancelled && result != MmResult.NoError)
            {
                throw new MmException(result, "acmFormatChoose");
            }
            return(result == MmResult.NoError);
        }
Beispiel #2
0
        /// <summary>
        /// Show Format Choose Dialog
        /// </summary>
        /// <param name="ownerWindowHandle">Owner window handle, can be null</param>
        /// <param name="windowTitle">Window title</param>
        /// <param name="enumFlags">Enumeration flags. None to get everything</param>
        /// <param name="enumFormat">Enumeration format. Only needed with certain enumeration flags</param>
        /// <param name="selectedFormat">The selected format</param>
        /// <param name="selectedFormatDescription">Textual description of the selected format</param>
        /// <param name="selectedFormatTagDescription">Textual description of the selected format tag</param>
        /// <returns>True if a format was selected</returns>
        public static bool ShowFormatChooseDialog(
            IntPtr ownerWindowHandle,
            string windowTitle,
            AcmFormatEnumFlags enumFlags,
            WaveFormat enumFormat,
            out WaveFormat selectedFormat,
            out string selectedFormatDescription,
            out string selectedFormatTagDescription)
        {
            AcmFormatChoose formatChoose = new AcmFormatChoose();
            formatChoose.structureSize = Marshal.SizeOf(formatChoose);
            formatChoose.styleFlags = AcmFormatChooseStyleFlags.None;
            formatChoose.ownerWindowHandle = ownerWindowHandle;
            int maxFormatSize = 200; // guess
            formatChoose.selectedWaveFormatPointer = Marshal.AllocHGlobal(maxFormatSize);
            formatChoose.selectedWaveFormatByteSize = maxFormatSize;
            formatChoose.title = windowTitle;
            formatChoose.name = null;
            formatChoose.formatEnumFlags = enumFlags;//AcmFormatEnumFlags.None;
            formatChoose.waveFormatEnumPointer = IntPtr.Zero;
            if (enumFormat != null)
            {
                IntPtr enumPointer = Marshal.AllocHGlobal(Marshal.SizeOf(enumFormat));
                Marshal.StructureToPtr(enumFormat,enumPointer,false);
                formatChoose.waveFormatEnumPointer = enumPointer;
            }
            formatChoose.instanceHandle = IntPtr.Zero;
            formatChoose.templateName = null;

            MmResult result = AcmInterop.acmFormatChoose(ref formatChoose);
            selectedFormat = null;
            selectedFormatDescription = null;
            selectedFormatTagDescription = null;
            if (result == MmResult.NoError)
            {
                selectedFormat = WaveFormat.MarshalFromPtr(formatChoose.selectedWaveFormatPointer);
                selectedFormatDescription = formatChoose.formatDescription;
                selectedFormatTagDescription = formatChoose.formatTagDescription;
            }            
            
            Marshal.FreeHGlobal(formatChoose.waveFormatEnumPointer);
            Marshal.FreeHGlobal(formatChoose.selectedWaveFormatPointer);
            if(result != MmResult.AcmCancelled && result != MmResult.NoError)
            {                
                throw new MmException(result, "acmFormatChoose");
            }
            return result == MmResult.NoError;
            
        }
Beispiel #3
0
 public static extern MmResult acmFormatChoose(ref AcmFormatChoose formatChoose);