COM Objects > WaveformScroller object > Methods > WaveformScroller.GetViewLength method

Remarks

Obtains the length of the waveform scroller's view in terms of displayed milliseconds. The view length can be modified through the WaveformScroller.SetViewLength method.

For further details about methods of the Waveform scroller refer to the WaveformScroller object.

For a tutorial about the use of Waveform scrollers refer to the How to scroll the sound's waveform during playback tutorial.

Syntax

[Visual Basic]

control.WaveformScroller.GetViewLength (

hWndWaveformScroller as OLE_HANDLE,

nLengthInMs as Long

) as enumWanErrorCodes

[C++]

short control.WaveformScroller.SetViewLength (

OLE_HANDLE GetViewLength,

long *nLengthInMs

);

Parameter	Description

hWndWaveformScroller	Handle of the control returned by a previous call to the WaveformScroller.Create method
nLengthInMs	Reference that, on return from the method call, will contain the length of the view in milliseconds.

Return value

Value	Meaning

Negative value	An error occurred, check the LastError property value in order to get the error code
enumWanErrorCodes.ERR_WAN_NOERROR (0)	The method call was successful