Methods > Graphic items management > GraphicItemVerticalLineParamsSetEx method

Remarks

Modifies one of the settings for the given vertical line added to the waveform analyzer. Value of single settings can be obtained through the GraphicItemVerticalLineParamsGetEx method.

This method is an alternative to the GraphicItemVerticalLineParamsSet method and is provided with the purpose of allowing single settings modifications when dealing with languages like JavaScript where data structures are not easy to implement.

Syntax

[Visual Basic]

control.GraphicItemVerticalLineParamsSetEx (

nUniqueId as Integer,

nParam as short,

strValue as String

) as enumWanErrorCodes

[C++]

short control.GraphicItemVerticalLineParamsSetEx (

short nUniqueId,

short nParam,

LPCTSTR strValue

);

Parameter

Description

nUniqueId

Unique identification number assigned to the line by a previous call to the GraphicItemVerticalLineAdd method.

nParam

Numeric identifier of the requested parameter.

Supported values are the following:

Value	Meaning
0	color member of the WANALYZER_VERTICAL_LINE data structure
1	nDashStyle member of the WANALYZER_VERTICAL_LINE data structure
2	nWidth member of the WANALYZER_VERTICAL_LINE data structure
3	nTranspFactor member of the WANALYZER_VERTICAL_LINE data structure
4	nHighCap member of the WANALYZER_VERTICAL_LINE data structure
5	nLowCap member of the WANALYZER_VERTICAL_LINE data structure
6	nLowCap member of the WANALYZER_VERTICAL_LINE data structure

strValue

String representing the numerical value to set: the multimedia engine will manage converting the string into the corresponding numerical value.

The value is formatted with the following rules:

•	Color values are formatted like "#RRGGBB" where:

- "#" represents the control character used for formatting colors in HTML code: the presence of this character is mandatory

- RR represents the hexadecimal value of the color's red component

- GG represents the hexadecimal value of the color's green component

- BB represents the hexadecimal value of the color's blue component

For example the green color will be represented with the value "#00FF00"

•	Boolean values are rendered as

- "1" or "True" for indicating the boolean "true"

- "0" or "False" for indicating the boolean "false"

Return value

Value	Meaning

Negative value	An error occurred (see the LastError property for further error details)
enumWanErrorCodes.ERR_WAN_NOERROR (0)	The method call was successful.