2.2.4.24.24 Layer::LT_set_var

LT_set_var

1 Description
2 Syntax
3 Parameters
4 Return
5 Examples
6 Remark
7 See Also
8 Header to Include
9 Reference

Description

Set LabTalk variable value with a specific layer as the active layer.

Syntax

BOOL LT_set_var( LPCSTR lpcszLabTalkVarName, double dbValue )

Parameters

lpcszLabTalkVarName: [input] LabTalk variable name, case insensitive
dbValue: [output] the new value

Return

TRUE if OK, and FALSE if it fails.

Examples

EX1

//set the graph layer's height.
void   Layer_LT_set_var_ex1()
{
	double vv;
	GraphPage gp;
	gp.Create("Origin");
	GraphLayer gl = gp.Layers(0);
	gl.LT_get_var("layer.height", &vv);
	out_double("layer's height is ", vv);
	vv += 10;
	// Set the new value:
	if(gp.LT_set_var("layer.height", vv))
        out_str("set layer's height in LabTalk succeeded");
    else
        out_str("set layer's height in LabTalk failed");
 
    gp.LT_get_var("layer.height", &vv);
    out_double("new value is ", vv);
}

Remark

It sets the value of a LabTalk variable. The Layer Object is only temporarily set as the active layer. The Layer that was active before the code executes is restored as active upon return.