This example demonstrates how to show active layer only, which does the same thing as we right-click on the layer icon on the upper-left corner of graph and choose Show Active Layer Only.
void only_show_active_layer() { GraphPage gp("Graph1"); if( gp ) { // to active graph window gp.CheckShowActivate(); // execute the LabTalk command with the active graph window LT_execute("menu -e 37975;"); } }