Tutorials > How to use Mnemonic Constants

The use of Mnemonic Constants improves the readability of your code. This version of the control implements a new internal design to expose these public enumerated types. You will see them in the drop downs on property sheets and in Microsoft's Intellisense feature.

The only environment where this is not the case is Microsoft Visual C++ environment (due to the manner in which the environment communicates with the control).

The following is the full list of enumerated types with their associated properties:

Enumerated type	Corresponding properties or parameters
enumErrorCodes	LastError property
enumRecorderStatus	Status property
enumVuBandsMode	VUMeter.BandType property
enumOscillType	Oscilloscope.Type property
enumWaveformRes	Waveform.Resolution property
enumCdActions	nAction parameter of the PerformActionOnCd method
enumCdStates	return value of GetCdStatus method and nCdStatus parameter of the CdPlayerStatusChanged event
enumCdIdCodes	nIdentType parameter of the GetCdIdentification method
enumCddbAlbumInfo	nInfo parameter of the CddbGetAlbumInfo method
enumCdCoverSizes	nCoverSize parameter of the GetCdCoverPictureURL, GetCdCoverPictureFile methods and of the CdCoverPictureFileAvailable event
enumEncodingFormats	EncodeFormats.ForRecording, EncodeFormats.ForCdRipping and EncodeFormats.ForExporting properties
enumResampleModes	EncodeFormats.ResampleMode property
enumWavEncodeModes	EncodeFormats.WAV.EncodeMode property
enumWmaEncodeModes	EncodFormats.WMA.EncodeMode property and nEncodeMode parameter of the EncodeFormats.WMA.GetEncodingProfileInfo method.
enumMp2EncodeModes	EncodeFormats.MP2.EncodeMode property
enumMp3EncodeModes	EncodeFormats.MP3.EncodeMode property
enumMp3EncodePresets	EncodeFormats.MP3.Preset property
enumOggEncodeModes	EncodeFormats.OGG.EncodeMode property
enumAacEncodeModes	EncodeFormats.AAC.EncodeMode property
enumAcmEncodeModes	EncodeFormats.ACM.EncodeMode property
enumW64EncodeModes	EncodeFormats.W64.EncodeMode property
enumAIFFEncodeModes	EncodeFormats.AIFF.EncodeMode property
enumAUEncodeModes	EncodeFormats.AU.EncodeMode property
enumPAFEncodeModes	EncodeFormats.PAF.EncodeMode property
enumSVXEncodeModes	EncodeFormats.PAF.EncodeMode property
enumNISTEncodeModes	EncodeFormats.NIST.EncodeMode property
enumVOCEncodeModes	EncodeFormats.VOC.EncodeMode property
enumIRCAMEncodeModes	EncodeFormats.IRCAM.EncodeMode property
enumPVFEncodeModes	EncodeFormats.PVF.EncodeMode property
enumCAFEncodeModes	EncodeFormats.CAF.EncodeMode property
enumFLACEncodeModes	EncodeFormats.FLAC.EncodeMode property
enumRAWEncodeModes	EncodeFormats.RAW.EncodeMode property and nEncodeMode parameter of the StartFromFileRaw and StartFromMemoryRaw methods
enumRecordingModes	nMode parameter of the SetRecordingMode method
enumScaleUnits	nScaleUnits parameter of the RecordedSound.SeekPlayPosition and CdRippingSetRange methods
enumWaveformTypes	nWaveformType parameter of the WaveformAnalyzer.BitmapViewSaveToFile and WaveformAnalyzer.GetMinMaxPeakLevelsForRange methods
enumSoundEditCommands	nCommand parameter of the SoundEditStarted and SoundEditDone events
enumTrackerCursorModes	nCursorMode parameter of the WaveformAnalyzer.SetTrackerCursors method
enumGraphicBarOrientations	nOrientation member of the GRAPHIC_BAR_SETTINGS data structure
enumGraphicBarShapes	nShape member of the GRAPHIC_BAR_SETTINGS data structure
enumAnalyzerResolutions	nResolution member of the WAVEFORM_ANALYZER_SETTINGS_2 data structure
enumWaveformStereoModes	nStereoVisualizationMode member of the WAVEFORM_ANALYZER_SETTINGS_2 data structure and nWaveformStereoMode parameter of the WaveformAnalyzer.BitmapViewDrawToHdc method
enumWaveformLineModes	nWavePositionLineType and nWavePlaybackLineType members of the WAVEFORM_ANALYZER_SETTINGS_2 data structure, nMode parameter of the WaveformAnalyzer.VerticalLineAdd and WaveformAnalyzer.BitmapViewVerticalLineAdd methods.
enumMouseActions	nAction parameter of the WaveAnalyzerMouseNotification event
enumBitmapModes	nWaveformType parameter of the WaveformAnalyzer.SetBackPictureFromFile and WaveformAnalyzer.SetBackPictureFromHandle methods
enumVolumeScales	nScaleType parameter of the SetMixingParams, ASIO.DeviceChannelVolumeGet, ASIO.DeviceChannelVolumeSet, ASIO.DeviceMasterVolumeGet and ASIO.DeviceMasterVolumeSet methods; nScaleType member of the WAVEFORM_ANALYZER_SETTINGS_2 data structure
enumAsioChannelModes	nChannelMode parameter of the ASIO.DeviceStart method
enumDriverTypes	nDriverType parameter of the InitDriversType method and return value of the GetInputDeviceDriverType method
enumWaveAnalyzerRectangles	nIdRectangle parameter of the WaveformAnalyzer.GetRectangle method
enumInputChannelTypes	Return value of the GetInputDeviceChannelType method
enumGraphicFormats	nFormat parameter of the WaveformAnalyzer.BitmapViewSaveToFile method
enumCommonDialogInfo	nInfo parameter of the CommonDialogGetInfoFromLastOpen and CommonDialogGetInfoFromLastSave methods.
enumVolumeScales	nScaleType parameter of the OutputVolumeSet and OutputVolumeGet methods.
enumPlaybackStatus	Return value of the GetPlaybackStatus method
enumCoreAudioDeviceStates	nStateMask parameter of the CoreAudioDevices.Enum method
enumCoreAudioDataFlows	nDataFlow parameter of most methods of the CoreAudioDevices COM object
enumCoreAudioDeviceNames	nTypeOfName parameter of the CoreAudioDevices.DescGet method
enumCoreAudioRoles	nRole parameter of the CoreAudioDevices.DefaultGet method
enumCoreAudioDeviceStates	nStatus parameter of the CoreAudioDevices.StatusGet method
enumCoreAudioCaptureParts	nPartId parameter of the CoreAudioDevices.CapturePartChannelCountGet, CoreAudioDevices.CapturePartChannelVolumeGet and CoreAudioDevices.CapturePartChannelVolumeSet methods
enumCoreAudioRenderParts	nPartId parameter of the CoreAudioDevices.RenderPartChannelCountGet, CoreAudioDevices.RenderPartChannelVolumeGet. CoreAudioDevices.RenderPartChannelVolumeSet, CoreAudioDevices.RenderPartMuteGet and CoreAudioDevices.RenderPartMuteSet methods
enumWasapiDeviceTypes	nDeviceType parameter of the WASAPI.DeviceCoreAudioIndexGet, WASAPI.DeviceGetCount, WASAPI.DeviceGetDesc, WASAPI.DeviceIsFormatSupported, WASAPI.DeviceIsStarted, WASAPI.DeviceLatencyGet, WASAPI.DeviceMuteGet, WASAPI.DeviceMuteSet, WASAPI.DeviceSharedFormatGet, WASAPI.DeviceStartExcusive, WASAPI.DeviceStartShared, WASAPI.DeviceStop, WASAPI.DeviceVolumeGet, WASAPI.DeviceVolumeSet methods
enumWasapiChannelModes	nChannelMode parameter of the WASAPI.DeviceStartShared method
enumCoreAudioDeviceTypes	nDeviceType parameter of the CoreAudioDevices.TypeGet method

The following examples, under different development environments, show how to use Mnemonic Constants in your code. These examples assume that one instance of the control, named AudioSoundRecorder1, exists on a form or dialog box. The purpose of this sample code is to check if the recorder is currently ripping a CD track.

Microsoft Visual C++ (4.0, 5.0, 6.0 and .NET)

Microsoft Visual Basic 5 and 6

Microsoft Visual C++ (4.0, 5.0, 6.0 and .NET)

Because of the different behaviour of these environments, you need to include the header file AdjMmsEngDef.h in order to use predefined Mnemonic Constants: This module can be found inside the product Include directory (default C:\Program Files\Active Sound Recorder\include).

You can test in the recorder is currently ripping a CD track using the following line of code:

if (AudioSoundRecorder1.GetStatus () == RECORD_STATUS_CD_RIPPING)

// do something

.....

else

// do something else

.....

The GetStatus method is defined by the control wrapper class CActiveSoundRecorder contained inside the ActiveSoundRecorder.cpp and ActiveSoundRecorder.h files: these wrapper files are automatically generated when you insert the control inside your project. So, in order to access this function, you will have to insert the following line of code somewhere in your code.

#include "ActiveSoundRecorder.h"

The mnemonic constant RECORD_STATUS_CD_RIPPING can be found inside the AdjMmsEngDef.h module file. So, in order to access this value, you will have to insert the following line of code somewhere in your code.

#include "AdjMmsEngDef.h"

Microsoft Visual Basic 5 and 6

In this environment you can use that IntelliSense features that make it easy to assign the intended value to the method parameter.

After typing the code...

If AudioSoundRecorder1.Status

press the "=" key on your keyboard. IntelliSense displays the listbox of the possible values that can used to check the player status:

asrec_i000062

Select the SOUND_PAUSED value to complete the line of code as follows:

If ActiveSoundRecorder1.Status = RECORD_STATUS_CD_RIPPING Then

' do something

.....

Else

' do something else

.....

End If