If automatic tool selection is enabled and you move the cursor over objects on the front panel or block diagram, LabVIEW automatically selects the corresponding tool from the Tools palette. You can disable automatic tool selection and select a tool from the palette using the following methods:
Click the tool you want in the Tools palette.
Use the <Tab> key to move through the most commonly used tools in the sequence they appear on the palette.
Press the spacebar to toggle between the Operating tool and the Positioning tool on the front panel or between the Wiring tool and the Positioning tool on the block diagram.