Classes > WaveformAnalyzer class > Methods > WaveformAnalyzer.BitmapViewGetWidth method

Remarks

Given a range in milliseconds, calculates the number of pixels required for displaying the waveform's view in horizontal.

The returned value can be assigned to the nBitmapWidth parameter of the WaveformAnalyzer.BitmapViewSaveToFile and WaveformAnalyzer.BitmapViewSaveToMemory methods.

Before calling this method it's mandatory performing a previous sound's analysis through a call to the WaveformAnalyzer.AnalyzeFullSound method.

For details about the use of the Waveform Analyzer refer to the How to use the Waveform Analyzer section.

For further details about methods of the Waveform Analyzer refer to the WaveformAnalyzer class section.

Syntax

[Visual Basic]

Public Function BitmapViewGetWidth (

nStartPos as Int32,

nEndPos as Int32

) as Int32

[C#]

public Int32 BitmapViewGetWidth (

Int32 nStartPos,

Int32 nEndPos

);

[C++]

public: Int32 BitmapViewGetWidth (

Int32 nStartPos,

Int32 nEndPos

);

Parameter	Description

nStartPos	Number representing the sound's position, expressed in milliseconds, where the waveform's view begins. The value 0 represents the sound's beginning.
nEndPos	Number representing the sound's position, expressed in milliseconds, where the waveform's view ends. The value -1 represents the sound's end.

Return value

Value	Meaning

Negative value	An error occurred (see the LastError property for further error details)
Value > 0	The method call was successful and the returned value represents the width in pixels of the waveform's view