2.2.4.24.20 Layer::LT_execute

LT_execute

Description

Execute LabTalk script with a specific layer as the active layer. This method is equivalent to the LabTalk commands "win -o" and "layer -o".

Syntax

BOOL LT_execute( LPCSTR lpcszstr, int wCntrl = 0 )

Parameters

lpcszstr

[input] LT command string

wCntrl

[input] Not used

Return

Examples

EX1

//Use LabTalk script to set X scale of the graph layers.
void Layer_LT_execute_ex1()
{
    // Call this function with a graph window active that has two layers
    //
    // Declare graph page object and point to active page in project
    GraphPage gpg;
    gpg.Create("origin");
    gpg.AddLayer();
    if( gpg.IsValid() )
    {
        // Declare graph layer objects and attach to layers 1 and 2
        GraphLayer gly1 = gpg.Layers( 0 );
        GraphLayer gly2 = gpg.Layers( 1 );
        if( gly1.IsValid() && gly2.IsValid() )
        {
            // Use LabTalk script to set X scale of layer 1 to -10 to 10
            string strScript;
            strScript.Format( "layer.x.from=%f; layer.x.to=%f;", -10.0, 10.0 );
            gly1.LT_execute( strScript );
            // Use LabTalk script to set X scale of layer 2 to 0 to 100
            strScript.Format( "layer.x.from=%f; layer.x.to=%f;", 0.0, 100.0 );
            gly2.LT_execute( strScript );
        }
        else
            out_str( "Graph page needs to have at least two layers" );            
    }
    else
        out_str( "Active page is not a graph page" );
}

Remark

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.

See Also

Header to Include

origin.h