Use Function Parameter for text color

[werosen]

Greetings:

I'm trying to use a 'String' FunctionParameter to set different colors in drawTextAbsolute without success in v7.9.

Here's what I'm trying:

var aFPArray = new Array();

function preMain()
{
setPriceStudy(true);
setStudyTitle("TradersReports");
setShowCursorLabel(false);
askForInput();

//initialize formula parameters

var x=0;

//define a color menu option

aFPArray[x] = new FunctionParameter( "Param1", FunctionParameter.STRING);
with( aFPArray[x] ) {
setName( "String Menu Option" );
addOption( "Color.red" );
addOption( "Color.blue" );
setDefault( "Color.red" );
}

}

function main(Param1)
{

if (getBarState() == BARSTATE_NEWBAR)
{

// Display report results

drawTextAbsolute(1, 14, " Report Alert ", Param1, Color.black, Text.RELATIVETOLEFT | Text.RELATIVETOBOTTOM | Text.LEFT | Text.FRAME | Text.ONTOP | Text.BOLD, null, 10, "Proof1");

}

debugClear();
debugPrintln(" Param1 : " + Param1);
}

Is there a solution?

Warren

[Guest]

Re: Use Function Parameter for text color

Originally posted by werosen
Greetings:

I'm trying to use a 'String' FunctionParameter to set different colors in drawTextAbsolute without success in v7.9.

Here's what I'm trying:

var aFPArray = new Array();

function preMain()
{
setPriceStudy(true);
setStudyTitle("TradersReports");
setShowCursorLabel(false);
askForInput();

//initialize formula parameters

var x=0;

//define a color menu option

aFPArray[x] = new FunctionParameter( "Param1", FunctionParameter.STRING);
with( aFPArray[x] ) {
setName( "String Menu Option" );
addOption( "Color.red" );
addOption( "Color.blue" );
setDefault( "Color.red" );
}

}

function main(Param1)
{

if (getBarState() == BARSTATE_NEWBAR)
{

// Display report results

drawTextAbsolute(1, 14, " Report Alert ", Param1, Color.black, Text.RELATIVETOLEFT | Text.RELATIVETOBOTTOM | Text.LEFT | Text.FRAME | Text.ONTOP | Text.BOLD, null, 10, "Proof1");

}

debugClear();
debugPrintln(" Param1 : " + Param1);
}

Is there a solution?

Warren

When normally used to set a color, Color.red is an object, not a string. Setting the color using FunctionParameter, you need to provide a string value. Therein lies your problem. If you use the eval() function on the string you have provided the efs, that will evaluate the string in the appropriate context. e.g. use eval(Param1) in your drawTextAbsolute command versus just Param1

This should work for you.

[werosen]

Thanks Steve:

I appreciate the assist.

Warren